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A-J. Pennellia lasiocalycina (O. E. Schulz) Rollins. A, habit; B, flower; C, of nectar gland; E and F, lateral sepals; G, median sepal; H, stamens; I, ovary; J, fruit. Fro et al. 55 (MO).
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Extensive morphological study of Pennellia showed inconsistencies in previous delimitations of P. micrantha, P. robinsonii, P mcvaughii, P. hunnewellii, P. tricornuta, and P. patens. The variations in trichome morphology, sepal and petal color, and branching patterns suggest that these characters are plastic and often unreliable in distinguishing P...
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In this study; the genus of Sinoxylon Duftschmid, 1825 (Coleoptera, Bostrichidae) was revised. There were 3 species registered in our investigations: S. anale Lesne, 1897; S. ceratoniae (Linnaeus, 1758) and S. muricatum (Olivier, 1790), the last species was redescribed as being found for the first time for the Iraqi faunal insects. Key to the speci...
Citations
... Penellia includes eight species (Fuentes Soriano 2004;Bailey et al. 2007;Salariato et al. 2018), of which five grow in southwestern USA and Mexico, P. patens (O.E.Schulz) Rollins is known only from Mexico and disjunctly in Colombia, P. boliviensis is distributed along the Central Andes of Argentina and Bolivia, and P. brachycarpa is restricted to mountains of northwestern Argentina. ...
Pennellia yalaensis, a new species of Brassicaceae from Jujuy Province in Argentina, is described and illustrated, and its phylogenetic relationships with nearest relatives are discussed. This novelty is morphologically related to P. boliviensis and P. brachycarpa, which also grow in the Central Andes of Argentina. However, P. yalaensis clearly differs from both species by the plant height, inflorescence type, and petal length. In addition, trichomes of the basal leaves distinguish the new species from P. boliviensis, and fruit length and number of ovules/seed from P. brachycarpa. Phylogenetic analyses, based on DNA sequences of nuclear ITS and plastid trnL-F regions, confirmed these affinities.
... Members of the tribe have branched trichomes, ebracteate racemes (except in two Mancoa), often spreading sepals, white (rarely purplish) petals, seeds that produce mucilage when wetted, and a chromosome base number of x 5 8. A key to the last four genera was provided by Fuentes-Soriano (2004 Eight species: southwestern United States and northern and central Mexico. Six species of Halimolobos were initially placed by Fournier (1865) in Sisymbrium L., but as pointed out by Warwick et al. (2002), his concept of that genus involved dozens of other genera. ...
... Ten species: United States, Mexico, Costa Rica, Guatemala, Colombia, Bolivia, Chile, and Argentina. Rollins (1980) recognized eight species of Pennellia in North America, Al-Shehbaz (1990a) added a South American species, and Price et al. (2001a) transferred two species originally placed by Rollins (1993) in Arabis L. Fuentes-Soriano (2004) delimited Pennellia to consist of only seven species. An eighth species has recently been added from Argentina (Beilstein and Al-Shehbaz 2005), and two more are transferred herein. ...
In 2002, a monophyletic group previously unrecognized within Brassicaceae was identified through phylogenetic analysis of morphological characters in combination with data from three DNA sequences (Bailey et al.: Syst. Bot. 27: 318–332). As understood at that time, the halimolobine alliance (herein tribe Halimolobeae) comprised ca. 44 species from Halimolobos, Mancoa, Pennellia, and Sphaerocardamum. Within this group, a number of nomenclatural problems have remained unaddressed, including the polyphyly of both Halimolobos and Mancoa. With a developing understanding of Brassicaceae phylogeny, the Halimolobeae is robust in the context of higher level analyses and therefore in need of formal nomenclatural revision. The present study uses new and existing data in phylogenetic analyses based on trnL-F, ITS, and pistillata intron 1 data along with SEM studies of Synthlipsis elata and S. greggii to provide the bases for recircumscription of taxa assigned to the Halimolobeae. As recognized herein, the tribe includes five genera [Exhalimolobos, Halimolobos (including Synthlipsis elata), Mancoa, Pennellia, and Sphaerocardamum] and 39 species with two centers of distribution, one in north-central Mexico and the other in the Andes. A synopsis and keys to all taxa of the tribe are presented. Fifteen new combinations are proposed (E. arabioides, E. berlandieri, E. burkartii, E. hispidulus, E. palmeri, E. parryi, E. pazense, E. polyspermus, E. weddellii, H. elatus, H. henricksonii, H. pubens, H. stylosus, P. lechleri, and P. parvifolia).
... The Halimolobeae is a New World tribe of five genera and 39 species mostly distributed in northern and central Mexico (Bailey et al., 2007), though genera such as Exhalimolobos (9 spp.), Mancoa (8 spp.), and Pennellia (10 spp.) are also disjunctly distributed in northern Argentina, Bolivia, and Peru (Bailey et al., 2002;Fuentes-Soriano, 2004). Three species of Halimolobos (8 spp.) grow in the southern United States, whereas Sphaerocardamum (4 spp.) is endemic to Mexico. ...
... This new tribe, first recognized by Bailey et al. (2002) as the halimolobine alliance, includes five genera and about 40 species. It is an exclusively New World group, the ranges of most species of which are in central and northern Mexico, though three reach the southwestern United States and several are disjunct in South America (Bailey 2001, Fuentes-Soriano 2004. The tribe includes Halimolobos (7 spp.), Mancoa Wedd. ...
A critical review of characters used in the systematics of the Brassicaceae is given, and aspects of the origin, classification,
and generic delimitation of the family discussed. Molecular phylogenetic studies of the family were reviewed, and major clades
identified. Based on molecular studies, especially from the ndhF chloroplast gene, and careful evaluation of morphology and generic circumscriptions, a new tribal alignment of the Brassicaceae
is proposed. In all, 25 tribes are recognized, of which seven (Aethionemeae, Boechereae, Descurainieae, Eutremeae, Halimolobeae,
Noccaeeae, and Smelowskieae) are described as new. For each tribe, the center(s) of distribution, morphology, and number of
taxa are given. Of the 338 genera currently recognized in the Brassicaceae, about 260 genera (or about 77%) were either assigned
or tentatively assigned to the 25 tribes. Some problems relating to various genera and tribes are discussed, and future research
developments are briefly covered.
Physarieae is a small tribe of herbaceous annual and woody perennial mustards that are mostly endemic to North America, with its members including a large amount of variation in floral, fruit, and chromosomal variation. Building on a previous study of Physarieae based on morphology and ndhF plastid DNA, we reconstructed the evolutionary history of the tribe using new sequence data from two nuclear markers, and compared the new topologies against previously published cpDNA-based phylogenetic hypotheses. The novel analyses included ca. 420 new sequences of ITS and LUMINIDEPENDENS ( LD ) markers for 39 and 47 species, respectively, with sampling accounting for all seven genera of Physarieae, including nomenclatural type species, and 11 outgroup taxa. Maximum parsimony, maximum likelihood, and Bayesian analyses showed that these additional markers were largely consistent with the previous ndhF data that supported the monophyly of Physarieae and resolved two major clades within the tribe, i.e., DDNLS ( Dithyrea , Dimorphocarpa , Nerisyrenia , Lyrocarpa , and Synthlipsis )and PP ( Paysonia and Physaria ). New analyses also increased internal resolution for some closely related species and lineages within both clades. The monophyly of Dithyrea and the sister relationship of Paysonia to Physaria was consistent in all trees, with the sister relationship of Nerisyrenia to Lyrocarpa supported by ndhF and ITS, and the positions of Dimorphocarpa and Synthlipsis shifted within the DDNLS Clade depending on the employed data set. Finally, using the strong, new phylogenetic framework of combined cpDNA + nDNA data, we discussed standing hypotheses of trichome evolution in the tribe suggested by ndhF .
This chapter introduces the plant family Brassicaceae (Cruciferae or mustard family) and also summarizes significant roles of some representative plant species from this family for metals and metalloids phytoremediation. Brassicaceae family is one of the largest dicot families of flowering (angiospermic) plant kingdom which comprises 10–19 tribes with a total of 338–360 genera and nearly 3,709 species. The Brassicaceae are easily recognized by having unique flowers [with four petals, forming a cross or sometimes reduced or lacking; six stamens, the outer two being shorter than the inner four (however, sometimes only two or four stamens are present) and capsule (having two valves capsule with a septum dividing it into two chambers)]. The plant family Brassicaceae includes several plant species of great scientific, economic and agronomic importance including model species (Arabidopsis and Brassica), developing model generic systems (Boechera, Brassica, and Cardamine), as well as many widely cultivated species. The well-known model plants from the family Brassicaceae viz., Arabidopsis (Arabidopsis thaliana) and Brassica species have revolutionized our knowledge in almost every field of modern plant biology. In addition, several representatives of the family Brassicaceae are equally playing significant roles for achieving environmental sustainability.
