ArticlePDF Available

Abstract and Figures

In this paper we describe and illustrate Sinningia × vacariensis a naturally occurring hybrid between S. lineata and S. macrostachya, from rocky outcrops inside an Araucaria forest in Rio Grande do Sul, Brazil.
Content may be subject to copyright.
Accepted by Peter Heenan: 16 July 2013; published: 1 August 2013 45
ISSN 1179-3155 (print edition)
ISSN 1179-3163 (online edition)
Copyright © 2013 Magnolia Press
Phytotaxa 119 (1): 4550 (2013)
Sinningia × vacariensis (Gesneriaceae) from Southern Brazil, the first natural
hybrid described for the genus
1Universidade Federal do Rio Grande do Sul, Programa de Pós-Graduação em Botânica, Av. Bento Gonçalves, 9500, Porto Alegre,
Rio Grande do Sul, 91501-970, Brazil. E-mail:,
2Conservatoire et Jardin botaniques de la Ville de Genève, Case postale 60, CH-1292 Chambésy, Suiça.
In this paper we describe and illustrate Sinningia × vacariensis a naturally occurring hybrid between S. lineata and S.
macrostachya, from rocky outcrops inside an Araucaria forest in Rio Grande do Sul, Brazil.
Neste trabalho, descreve-se e ilustra-se Sinningia × vacariensis, um híbrido natural entre as espécies S. lineata e S.
macrostachya, ocorrendo em afloramentos rochosos no interior da floresta com Araucária no Rio Grande do Sul, Brasil.
Key words: Gesneriaceae, rocky outcrop, hybridization, clade Dircaea
Hybrids between species of the Gesneriaceae family are easy to produce and numerous crosses were obtained
by horticulturists and plant growers as appears in the list kept by the Gesneriad society (http:// Interspecific hybrids also have been used in an effort to delimit
cenospecies and improve classification within the genus Sinningia Nees (1825: 297) (Clayberg 1996).
Naturally occurring hybrids can also occur, but are rarely reported (Puglisi et al. 2011). In Brazil some
hybridization events were strongly suspected, based on morphological observation in the field or on
herbarium specimens for Nematanthus Schrader (1821: 718) (Araujo et al. 2005, Chautems 1988, Chautems
& Kiyama 2003) and Vanhouttea Lemaire (1845: 346) (Chautems 2002, SanMartin-Gajardo 2005).
For Sinningia, a few examples of individuals intermediate between two parent species were observed in
the field (Chautems, pers. obs.), but never formally registered or published. A first case is here documented
involving two species of this genus that counts over 60 species of shrubs, sub-shrubs or tuberous herbs
occurring in a broad range of geographic regions and growing under distinct ecological conditions (Araújo &
Chautems 2012, Chautems 2010). Based on morphological studies of herbarium, living material and field
studies, we describe a new hybrid species between S. lineata (Hjelmquist 1937: 302) Chautems (1990: 385)
and S. macrostachya (Lindley 1828: 1202) Chautems (1990: 386), from rocky outcrops inside an Araucaria
forest in Rio Grande do Sul, Brazil.
FERREIRA ET AL.46 Phytotaxa 119 (1) © 2013 Magnolia Press
Sinningia × vacariensis Ferreira, Waechter & Chautems nothosp. nov. Fig. 1 A–F
Type:—BRAZIL. Rio Grande do Sul: Vacaria, Afloramento rochoso no interior da Floresta com Araucária, próximo ao
Rio Pelotas, 28°12’42”S, 50°45’35”W, 660 m, 18 November 2012, G.E. Ferreira and C.Vogel-Ely 235 (holotype
ICN, isotype G).
FIGURE 1. A–F. Sinningia × vacariensis (from the holotype). A. Habit. B. Ovary with calyx. C. Corolla opening, front view. D.
Calyx with corolla. E. Corolla without calyx and trichomes. F. Anthers details with front view.
Phytotaxa 119 (1) © 2013 Magnolia Press 47
Plants rupicolous with erect stems arising from tubers; Stems 80–100 cm long, pilose, green with reddish
streaks. Leaves opposite-decussate, subequal, petiole 1.5 cm long, tomentose, concolorous; blade ovate–
elliptic, 8–15 cm long, 7–12 cm wide, obtuse at the apex, cordate or sometimes unequal at the base, margin
irregularly crenate, 4–5 pairs of veins, above strigillose, below whitish-tomentose. Inflorescences cymose,
composed of pair-flowered cymes, borne in the axils of bracts or upper leaf pairs over the ca. 30 cm long apex
of the axis; peduncles 0.5–2 cm long, green with reddish streaks, hirsute; pedicels ascending 0.5–2 cm long,
green with reddish streaks, hirsute. Calyx ovate, tube 2–3 mm long, hoary-tomentose, lobes linear-lanceolate,
4–6 mm long, acuminate, margin entire, green, pilose. Corolla erect in calyx, tubular, 2.5–3 cm long, red,
pilose, base with 5 gibbosities between the calyx lobes, tube constricted above base, 3–4 mm wide, then
expanding gradually to 5–7 mm wide at throat, limb spreading, lobes 5, with many dark red dots, unequal, ca.
4 × 4 mm; Stamens 4, included, filaments 2.9–3.2 cm long, glabrous, anthers coherent, rectangular, pollen
white, nectary consisting of two separate dorsal glands; Ovary 6 mm long, 2 mm wide, hispid, style 2 cm
long, green, pubescent. Fruit a dry two-valved capsule, 0.9–1.1 cm long, and 0.4–0.6 cm wide, acuminate,
reddish brown, pubescent; seeds narrowly ellipsoid, brown.
FIGURE 2. Distribution of Sinningia macrostachya, S. lineata and S. × vacariensis in South America, showing the overlapping area.
Blue circle. S. macrostachya. Red triangle. S. lineata. Pink lozenge. S. × vacariensis.
FERREIRA ET AL.48 Phytotaxa 119 (1) © 2013 Magnolia Press
Distribution and habitat:—This hybrid occurs in the Vacaria municipality in Rio Grande do Sul, next to
the Pelotas River. We located only one individual, growing on basaltic rock outcrops within an Araucaria
forest, close to streams or in shaded habitats, between 600 and 800 m in elevation (Fig. 2).
Etymology:—The name of the nothospecies is derived from the municipality “Vacaria” where the plant
was first encountered.
FIGURE 3. A–F. Comparison between the two species and the hybrid. A–B. Sinningia macrostachya. A. Habit. B. Detail of flower.
C–E. S. × vacariensis. C. Habit. D. Detail of inflorescence. E. Detail of flower F–G. S. lineata. F. Habit. G. Detail of flower.
Phytotaxa 119 (1) © 2013 Magnolia Press 49
In the framework of a taxonomic and biogeographic survey of tribe Sinningieae in Rio Grande do Sul we
came across a plant that drew our attention by its inflorescence and flower structure intermediate between S.
lineata and S. macrostachya, (Fig. 3 A–F). Detailed observations led us to conclude that we had found a case
of natural hybrid between these species.
As for morphological characters, S. macrostachya has opposite leaves, ovate to elliptic, 8–15 × 5–9.5 cm,
petiole 2.5 cm, distributed in 4–7 whorls, (frondo)-bracteose florescence with cymes (Chautems & Weber
1999), peduncle up to 1 cm, corolla 2.8 cm, orange to red, with few vinose dots mostly on ventral and lateral
lobes. S. lineata has opposite leaves, elliptical to ovate, 9.5–15 × 7–14 cm, disposed in 1–2 whorls, petiole 4.5
cm, shoot reduced to frondose florescence with a well-developed pair-flowered cymes (Chautems & Weber
1999), peduncle 7–15 cm, corolla 2.8–3.5 cm, orange to reddish, all lobes with vinose dots. S. ×vacariensis
clearly presents morphological characteristics intermediate between the two species: leaves opposite-
decussate, ovate to elliptic, 8–15 × 7–12 cm, distributed in 3 whorls, petiole 1.5 cm long, frondo-(bracteose)
florescence with cymes, peduncle 0.5–2 cm long, corolla 2.5–3 cm long, lobes with vinose dots on ventral and
lateral lobes and dark red dots on dorsal lobes.
S. macrostachya is a species that has a rather wide distribution in southern Brazil and a neighbouring area
in Uruguay (Grela & Brussa 2005), occurring in sunny rock outcrops from sea level to an altitude of 1000 m,
whereas S. lineata has a restricted distribution, occurring in shaded rock outcrops in the forests and steep
slopes along the Pelotas, Canoas, Uruguay and Antas rivers. As both species inhabit different environments,
the likelihood of hybridization can be considered as low. However, the hybrid S. ×vacariensis was collected
where the areas of occurrence of the two species overlap, on a rocky outcrop within a forest, at the mouth of
the Socorro River, which flows into the Pelotas River). At this site, the two habitats of both parental species
are in close proximity (ca. 300 m). Probably this hybrid has originated from cross-pollination by
hummingbirds, since the two species have the same pollination syndrome. This hybridization event is not
surprising as the two parent species are phylogenetically closely related as inferred from their sister position
within clade Dircaea in recent molecular studies (Perret et al. 2003, 2007).
We are grateful to Capes (Coordenação de Aperfeiçoamento de Pessoal de Nível Superior) for providing a
scholarship to the first author, to Juliana Allgayer for her great help during the field expeditions, to Alan
LaVergne for revising the text and to Dr. Mathieu Perret for kindly producing the distribution map. We are
also grateful to the Editor and the Reviewer for their valuable suggestions on the submitted manuscript.
Araújo, A.O, Souza, V.C. & Chautems, A. (2005) Gesneriaceae da Cadeia do Espinhaço de Minas Gerais, Brasil. Revista
Brasileira de Botânica 28: 109–135.
Araújo, A.O. & Chautems, A. (2012) Gesneriaceae In: Forzza et al. (ed.) Lista de Espécies da Flora do Brasil. Jardim
Botânico do Rio de Janeiro. ( 12 Dez 2012)
Chautems, A. (1988) Révision taxonomique et possibilités d’hybridations de Nematanthus Schrader (Gesneriaceae),
genre endémique de la forêt côtière brésilienne. Dissertationes Botanicae 112: 1–226.
Chautems, A. (1990) Taxonomic revision of Sinningia Nees: nomenclatural changes and new synonymies. Candollea
45(1): 381–388.
Chautems, A. & Weber, A. (1999) Shoot and Inflorescence Architecture of the Neotropical genus Sinningia
(Gesneriaceae). In: Kurmann, M.H. & Hemsley, A.R. (eds). The Evolution of Plant Architecture. Royal Botanic
Gardens, Kew, pp. 305–322.
FERREIRA ET AL.50 Phytotaxa 119 (1) © 2013 Magnolia Press
Chautems, A., Lopes, T.C.C., Peixoto, M. & Rossini, J. (2010) Taxonomic revision of Sinningia Nees (Gesneriaceae) IV:
six new species from Brazil and a long overlooked taxon. Candollea 65 (2): 241–266
Clayberg, C.D. (1996) Interspecific hybridization in Sinningia (Gesneriaceae). Baileya 23: 184–194.
Grela, I.A. & Brussa, C.A. (2005) Sinningia macrostachya (Lindl.) Chautems, Nuevo registro de Gesneriaceae para la
Flora del Uruguay. Iheringia Série Botânica 60: 249–252.
Hjelmquist, K.J.H. (1937) Rechsteineria lineata. Botaniska Notiser 1: 302–305.
Lemaire, A.C. (1845) Vanhouttea. Bulletin de la Société d’Horticulture d’Orléans 1: 346.
Lindley, J. (1828) Gesneria macrostachya. Botanical Register t.14: 1202.
Nees von Esenbeck, C.G.D. (1825) Sur un nouveau genre de la famille des Gessnériées. Annales des Sciences Naturelles
(Paris) 6: 290–299, pl. 12, fig. 1.
Perret, M., Chautems, A., Spichiger, R., Kite, G. & Savolainen, V. (2003) Systematics and evolution of tribe Sinningieae
(Gesneriaceae): evidence from phylogenetic analyses of six plastid DNA regions and nuclear ncpGS. American
Journal of Botany 90: 445–460.
Perret, M., Chautems, A., Spichiger, R., Barraclough, T.G. & Savolainen, V. (2007) The geographical pattern of
speciation and floral diversification in the Neotropics: the tribe Sinningieae (Gesneriaceae) as a case study.
Evolution 61: 1641–1660.
Puglisi, C., Wei, Y., Nishii, K. & Möller, M. (2011) Oreocharis × heterandra (Gesneriaceae): a natural hybrid from the
Shengtangshan Moun-tains, Guangxi, China. Phytotaxa 38: 1–18.
SanMartin-Gajardo, I. & Sazima, M. (2005) Espécies de Vanhouttea Lem. e Sinningia Nees (Gesneriaceae) polinizadas
por beija-flores: interações relacionadas ao hábitat da planta e ao néctar. Revista Brasileira de Botânica 28: 441–
Schrader, H.A. (1821) Gesneriaceae In: Göttingische Gelehrte Anzeigen 1821: 705–719.
... Rambo 1961). Subsequently a few publications reported new occurrences for the state (Silveira 1992;Ferreira & Chautems 2012;Ferreira et al. 2013;Ferreira et al. 2014b) and proposed three new species with restricted geographic ranges (Chautems 1991;Buzatto & Singer 2012;Ferreira et al. 2014a). The first natural hybrid in the genus was also described from Rio Grande do Sul (Ferreira et al. 2014b). ...
... The genus Sinningia is represented in the study area by 12 species and one natural hybrid. In earlier works, we identified a new species, described as S. ramboi by Ferreira et al. (2014a), the first natural hybrid for the genus Sinningia, described as S. × vacariensis by Ferreira et al. (2013), and found a new occurrence for S. bullata in Rio Grande do Sul, reported by Ferreira et al. (2014b). ...
Full-text available
The genus Sinningia belongs to the Neotropical tribe Gesnerieae, subtribe Ligeriinae, presently consisting of only three genera, Paliavana, Sinnigia and Vanhouttea. These genera were separated from a larger concept of tribe Gloxinieae based on phylogenetic studies with molecular data. In Rio Grande do Sul, southern Brazil, 12 species and one natural hybrid of Sinningia have been recorded. Species of Sinningia in this area are erect or ascending herbs or subshrubs arising from underground or partially exposed tubers. They grow in very distinct ecological conditions, from water-saturated marshes to dry grasslands or shrublands, but most often in rupicolous or epiphytic habitats commonly associated with forest environments. In this review we provide an identification key to the species level and morphological descriptions and illustrations, comments on taxonomic aspects, distributional maps and IUCN Red List Categories and Criteria for all twelve species. Additionally, we designate lectotypes for S. allagophylla and S. sellovii and consider the recently described S. lutea as a synonym of the highly variable S. allagophylla.
... Pollen Morphology:-Natural hybrids are rarely registered in Gesneriaceae (Perret et al. 2007, Puglisi et al. 2011, Ferreira et al. 2013. For that reason, there are few comparative studies between pollen grains of natural hybrids and parental species in the palynological literature. ...
A natural hybrid between Goyazia and Mandirola (Gloxiniinae, Gesneriaceae) from Cerrado (Brazil) is here described, supported by pollen morphology, cytological data and morphological characters. The microsporogenesis of Mandirola hirsuta and that of the hybrid were analyzed in order to evaluate the cytogenetic characteristics. The haploid chromosome numbers observed were n = 12 for M. hirsuta and n = 11, 13, 16 and 26 for the hybrid. Structural abnormalities (monads, dyads, triads and micronuclei) were observed at the final of the hybrid’s meiosis. High viability rates of the pollen were recorded for Goyazia and Mandirola (>90%) and low viability for the hybrid (34.7%). The pollen grains were acetolyzed, measured and photographed for pollen morphology analysis. Quantitative pollen data were analyzed through descriptive and multivariate statistics. The hybrid has intermediate pollen characteristics between G. petraea and M. hirsuta; it is more related to G. petraea by the measures of diameters and ectoapertures; it is more similar to M. hirsuta mainly regarding the microreticulum on the mesocolpium region. The hybrid and Mandirola share vegetative and flower size, while the colors of the hybrid are similar to Goyazia. Pollen morphology, cytological data and morphological characters brought clear evidence for the recognition of the intergeneric hybrid, which we named as Goydirola x punctata.
... Thus, the species was the geographically most confined among a small set of narrow subtropical endemism, including S. lineata (Hjelmquist) Chautems, S. polyantha (DC.) Wiehler, and S. ramboi G.E. Ferreira et al. (Chautems et al. 2010;Ferreira et al. 2013. This paper presents the first record of S. bullata for the State of Rio Grande do Sul. ...
Full-text available
Sinningia bullata, a narrow endemic species in Santa Catarina was found at a new site in Rio Grande do Sul, c. 210 km southwards and c. 800 m.a.s.l. above the type location. The paper includes a description, illustrations and a dichotomous key to distinguish the species from other sympatric species. Environmental data comprise a distribution map, comments on ecology and geography, and the updated conservation status of the species.
Full-text available
CHAUTEMS, A., T. C. COSTA LOPES, M. PEIXOTO & J. ROSSINI (2010). Taxonomic revision of Sinningia Nees (Gesneriaceae) IV: six new species from Brazil and a long overlooked taxon. Candollea 65: 241–266. In English, English and French abstracts. Six new species of Sinningia Nees are described: Sinningia bullata Chautems & M. Peixoto, Sinningia canastrensis Chautems, Sinningia gerdtiana Chautems, Sinningia globulosa Chautems & M. Peixoto, Sinningia helioana Chautems & Rossini, and Sinningia muscicola Chautems, T. Lopes & M. Peixoto. An additional species, thought for some time to be undescribed, was recently identified as Sinningia polyantha (DC.) Wiehler. Comments on phylogenetic relationships within tribe Sinningieae Fritsch, as well as on ecology and conservation status, are also included. Each species is illustrated and a distribution map is provided.
Full-text available
Gesneriaceae is predominantly tropical, and comprises nearly 3,000 species. The Espinhaço Range include parts of Minas Gerais and Bahia States and presents several types of vegetation, including the "campos rupestres" (the dominant one). The northern limit of the study area is Espinosa and the southern is Serra de Ouro Branco. This work was carried out based on bibliography survey, herbarium material, field observations and gatherings. The floristic survey revealed 21 species belonging to six genera: Anetanthus, Codonanthe, Gloxinia, Nematanthus, Paliavana and Sinningia. Identification keys, descriptions and comments of taxa are presented elaborated, as well as maps of geographic distribution and illustrations of the species.
Full-text available
Hummingbird pollination was suggested for Sinningia and Vanhouttea species based on floral features. However, there is still a lack of information about pollination biology. Here we report observations about floral biology and hummingbird-pollination of three Vanhouttea and three Sinningia species. The flowers are tubular, red and scentless. The pairwise comparison of corolla size results in two groups formed by: V. hilariana, V. brueggeri and S. gigantifolia which have bigger corollas than those of V. calcarata, S. cochlearis, and S. tuberosa. The nectar volume secreted during 24 hours by Vanhouttea species (21.8 ± 13.2 µL) was higher than that of Sinningia species (6.3 ± 5.7 µL). As well, the sugar amount produced by Vanhouttea species (6.1 ± 3.9 mg) was higher than that produced by Sinningia species (1.8 ± 1.6 mg). These differences on nectar production may be correlated with the distinct size of nectar glands in both genera. The hummingbirds Clytolaema rubricauda, Leucochloris albicollis, Stephanoxis lalandi (Trochilinae), Phaethornis eurynome and P. pretrei (Phaethornithinae) were the main pollinators of Vanhouttea and Sinningia species. The group of hummingbird pollinators (Trochilinae or Phaethornithinae) seems to be determined by the habitat of each plant species, while the frequency of visits seems to be mainly determined by nectar features.
Full-text available
For nearly all species in the three genera of tribe Sinningieae (Gesneriaceae), Sinningia, Paliavana, and Vanhouttea (mostly in southeastern Brazil) plus 10 outgroups, we have sequenced six non-coding DNA regions (i.e., plastid intergenic spacers trnT-trnL, trnL-trnF, trnS-trnG, atpB-rbcL, and introns in the trnL and rpl16 genes) and four introns in nuclear plastid-expressed glutamine synthetase gene (ncpGS). Separate and combined analyses of these data sets using maximum parsimony supported the monophyly of Sinningieae, but the genera Paliavana and Vanhouttea were found embedded within Sinningia; therefore a new infrageneric classification is here proposed. Mapping of pollination syndromes on the DNA-based trees supported multiple origins of hummingbird and bee syndromes and derivation of moth and bat syndromes from hummingbird flowers. Perennial tubers were derived from perennial stems in non-tuberous plants.
The presence of Sinningia macrostachya (Lindl.) Chautems (Gesneriaceae) is reported for the first time for the Uruguayan flora. This species has been detected in the northeastern zone of the country known as "Sierra de Ríos" (Cerro Largo Department). Until today, it has been considered endemic to Rio Grande do Sul and the extreme southeast of Santa Catarina, Brazil. Its detection in Uruguay extends the known area of occurrence of the species; moreover, it establishes its austral limit. In Uruguay, it grows associated to wet and rocky natural cliffs, either in the open sunlight or under forest cover.
Macro- and micro-morphological characters, molecular nuclear ribosomal internal transcribed spacer and chloroplast trnL-F intron-spacer data confirmed the hybrid status of Oreocharis x heterandra. Cytological studies showed that the parental species and the hybrid possess 2n=34 chromosomes, suggesting that chromosome translocations, not dysploid or ploidy level changes, are the cause of the high hybrid sterility. Recurrent reciprocal hybridisation between its parental species O. argyreia and O. magnidens in an area of secondary contact is apparently responsible for the persistent presence of the hybrids, though at low levels. As a consequence the name Oreocharis heterandra has to be changed to Oreocharis x heterandra.
Gesneriaceae are represented in the New World (NW) by a major clade (c. 1000 species) currently recognized as subfamily Gesnerioideae. Radiation of this group occurred in all biomes of tropical America and was accompanied by extensive phenotypic and ecological diversification. Here we performed phylogenetic analyses using DNA sequences from three plastid loci to reconstruct the evolutionary history of Gesnerioideae and to investigate its relationship with other lineages of Gesneriaceae and Lamiales. Our molecular data confirm the inclusion of the South Pacific Coronanthereae and the Old World (OW) monotypic genus Titanotrichum in Gesnerioideae and the sister-group relationship of this subfamily to the rest of the OW Gesneriaceae. Calceolariaceae and the NW genera Peltanthera and Sanango appeared successively sister to Gesneriaceae, whereas Cubitanthus, which has been previously assigned to Gesneriaceae, is shown to be related to Linderniaceae. Based on molecular dating and biogeographical reconstruction analyses, we suggest that ancestors of Gesneriaceae originated in South America during the Late Cretaceous. Distribution of Gesneriaceae in the Palaeotropics and Australasia was inferred as resulting from two independent long-distance dispersals during the Eocene and Oligocene, respectively. In a short time span starting at 34Mya, ancestors of Gesnerioideae colonized several Neotropical regions including the tropical Andes, Brazilian Atlantic forest, cerrado, Central America and the West Indies. Subsequent diversification within these areas occurred largely in situ and was particularly extensive in the mountainous systems of the Andes, Central America and the Brazilian Atlantic forest. Only two radiations account for 90% of the diversity of Gesneriaceae in the Brazilian Atlantic forest, whereas half of the species richness in the northern Andes and Central America originated during the last 10 Myr from a single radiation.
The geographical pattern of speciation and the relationship between floral variation and species ranges were investigated in the tribe Sinningieae (Gesneriaceae), which is found mainly in the Atlantic forests of Brazil. Geographical distribution data recorded on a grid system of 0.5 x 0.5 degree intervals and a near-complete species-level phylogenetic tree of Sinningieae inferred from a simultaneous analysis of seven DNA regions were used to address the role of geographical isolation in speciation. Geographical range overlaps between sister lineages were measured across all nodes in the phylogenetic tree and analyzed in relation to relative ages estimated from branch lengths. Although there are several cases of species sympatry in Sinningieae, patterns of sympatry between sister taxa support the predominance of allopatric speciation. The pattern of sympatry between sister taxa is consistent with range shifts following allopatric speciation, except in one clade, in which the overlapping distribution of recent sister species indicates speciation within a restricted geographical area and involving changes in pollinators and habitats. The relationship between floral divergence and regional sympatry was also examined by analyzing floral contrasts, phenological overlap, and the degree of sympatry between sister clades. Morphological contrast between flowers is not increased in sympatry and phenological divergence is more apparent between allopatric clades than between sympatric clades. Therefore, our results failed to indicate a tendency for sympatric taxa to minimize morphological and phenological overlap (geographic exclusion and/or character displacement hypotheses). Instead, they point toward adaptation in phenology to local conditions and buildup of sympatries at random with respect to flower morphology. Additional studies at a lower geographical scale are needed to identify truely coexisting species and the components of their reproductive isolation.
Sur un nouveau genre de la famille des Gessnériées
  • C G D Nees Von Esenbeck
Nees von Esenbeck, C.G.D. (1825) Sur un nouveau genre de la famille des Gessnériées. Annales des Sciences Naturelles (Paris) 6: 290-299, pl. 12, fig. 1.
Rechsteineria lineata
  • K J H Hjelmquist
Hjelmquist, K.J.H. (1937) Rechsteineria lineata. Botaniska Notiser 1: 302-305.