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A remarkable new Medinilla (Melastomataceae) from Celebes (Sulawesi), Indonesia

Authors:

Abstract

A new species of Medinilla (Melastomataceae) from Celebes, Indonesia, is described. It is a terrestrial shrub or treelet with specialised leafless inflorescence-bearing, many-branched branches at the base of the boles. It is clearly distinct in habit, branch–, leaf–, flower–, and fruit morphology from the few other species that are reported to have this type of flowering.
A"remarkable"new"Medinilla"(Melastomataceae)
from"Celebes"(Sulawesi),"Indonesia
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References
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Article
The island of Sulawesi formed from the joining of proto-islands roughly three million years ago. Regions of zoological endemism, corresponding to the proto-islands, have been reported. Sulawesi's tree communities, however, remain poorly documented. In better-studied tropical regions, soil types similar to those found in Sulawesi often have distinctive tree communities. To gather data on Sulawesi's tree communities, we established ten (0.25 ha) plots on four soil types across three regions. We documented diversity, endemism, dominance, and species composition. Linear models of species composition showed greater influence of geographic distance rather than soil, and no relationship with climate. This suggests that the legacy of Sulawesi's formation may have influenced tree communities more so than the soil types we sampled. Most of our plots were on stressful soil types making it difficult to conclude on the importance of edaphic specialization in the Sulawesi tree flora. The lack of climatic effects reflects Sulawesi's position within the wet tropics where the small climatic differences are unlikely to have large influence on tree communities. Abstract in Indonesian is available with online material.
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A new species, Medinillatheresae Fernando, from ultramafic soils on Dinagat and Mindanao Islands, Philippines is described and illustrated. The species is characterized by its terrestrial erect habit, non-setose nodes, 3-plinerved, lanceolate and coriaceous leaves arranged in whorls, cauline or axillary and pendulous inflorescences, rounded flower buds, 4-merous flowers, and straight anthers. It is compared with other similar species in the Medinillapendula Merr. complex.
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A new species, Medinilla dallciana Fernando & Balete (Melastomataceae: Dissochaeteae), with cauliflorous, compact inflorescences, borne on long, pendulous, and persistent peduncles from Luzon Island, Philippines is described and illustrated. Its similarity with other Philippine species of Medinilla is discussed.
Article
A revision is presented here of a group of mainly Papua New Guinea species of Medinilla Gaudich. ex DC. (Melastomataceae) peculiar for possessing a feature nearly unique for the family: leaf blades with a pair of lateral lobes at the base ('pseudo-stipules'), This character was previously recorded for Astronidium miraculum-dei J.F. Maxwell & Veldk. (Astronioideae) from the nearby Solomon Islands. Various explanations, none satisfactory, for this phenomenon are explored. The group consists of 15 taxa, 2 previously described, 13 proposed here. The correct authorship of Medinilla is 'Gaudich. ex DC.', the correct name for the type species is Medinilla medinilliana (Gaudich.) Fosberg & Sachet, and not M. rosea Gaudich. ex DC., nom, superfl. Medinilla rubicunda (Jack) Blume var. hasseltii (Blume) Bakh.f. is validated. The descriptions of M. arfakensis Baker f. and M. brassii Markgr. are emended. A study of the palynology confirmed the homogeneity within Medinilla and among related genera.
Article
Thesis (M.S.)--Michigan State University, 1988. Includes bibliographical references (leaves 128-131). Photocopy.
  • W B Hemsley
Hemsley, W.B. (1895) Flora of the Solomon islands. Bull. Misc. Inform. Kew: 132139 (135).
A revision of the pseudo-­stipular species of Medinilla Gaud. ex DC. (Melastomataceae -­ Melastomatoideae -­ Miconieae)
  • Bakhuizen
  • Den
  • R C Jr
Bakhuizen van den Brink Jr., R.C. (1947) Meded. Bot. Mus. Herb. Rijks Univ. Utrecht 91: 1–391. Bodegom, S. & Veldkamp, J.F. (2001) A revision of the pseudo-­stipular species of Medinilla Gaud. ex DC. (Melastomataceae -­ Melastomatoideae -­ Miconieae). Blumea 46: 527–567
550 m alt. (c. 3°33'S 119°46'E), cultivated in the Eka Karya Botanical Garden
  • Distribution
  • Sulawesi
  • Bukit Enrekang
  • Batusetan
Distribution. Sulawesi, Enrekang, Bukit Batusetan, c. 550 m alt. (c. 3°33'S 119°46'E), cultivated in the Eka Karya Botanical Garden, Bali, plot XV.B-242, c. 1250 m alt.
L), innovations brown pubescent, twigs lenticellate, Eponymy. The epithet tapete-­magicum is for the "magic tapestry" formed by the Medinilla tapete-­magicum credit: Irawati. References Backer
Collectors' notes. Shrub in February 2004 c. 1 m tall (Van Balgooy 7520, L), in January 2010 c. 1.5 m (Veldkamp 8943, L), innovations brown pubescent, twigs lenticellate, Eponymy. The epithet tapete-­magicum is for the "magic tapestry" formed by the Medinilla tapete-­magicum credit: Irawati. References Backer, C.A. & Bakhuizen van den Brink f, R.C. (1964) Melastomataceae. Flora of Java 1: 354-374. Groningen: Noordhoff.