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1.
Paul Wilkin Mamy Tiana Rajaonah Vololoniaina Harimanga Jeannoda Annette Hladik Victor Louis Jeannoda Claude Marcel Hladik 《Kew Bulletin》2008,63(1):113-120
Summary A new species of Dioscorea from Morondava prefecture in Western Madagascar is described. Dioscorea bako Wilkin differs from D. alatipes Burkill & H. Perr. by its usually shallowly and irregularly lobed leaf margins, broader leaf blade (grey-green below), longer
petiole and the broadly cuneate area where the petiole is inserted onto the leaf blade in the basal sinus. It is pubescent,
especially densely on young shoots and inflorescences. It is endemic to Morondava Préfecture and is endangered under IUCN
Red List category criteria (IUCN 2001). The unusual morphological features of its inflorescences, some of which are shared
with D. alatipes are discussed. Dioscorea bako is a favoured food source for people of the Menabe region and is reported by them to be increasingly hard to find. Immediate
conservation measures are necessary to ensure that it remains extant and, in the medium to long term, research should be undertaken
to guide its sustainable utilisation. 相似文献
2.
Summary Seven new names at species rank are proposed in Memecylon sect. Afzeliana Jacq.-Fél., a group of forest shrubs and small trees confined to Guineo-Congolian Africa. The group is centred in Cameroon,
where 17 of the 20 species occur. A new flower type, the “star-flower” in Memecylon is revealed, and its taxonomic and ecological importance discussed. Three new, locally endemic species from the South West
Province of Cameroon are described, mapped and illustrated: M. kupeanum R. D. Stone, Ghogue & Cheek, M. bakossiense R. D. Stone, Ghogue & Cheek, and M. rheophyticum R. D. Stone, Ghogue & Cheek. Two new names, M. accedens R. D. Stone, Ghogue & Cheek and M. hyleastrum R. D. Stone & Ghogue and one new combination, M. mamfeanum (Jacq.-Fél.) R. D. Stone, Ghogue & Cheek are provided at species level for three taxa originally proposed as varieties of
M. afzelii G. Don. The taxon M. arcuatomarginatum var. simulans Jacq.-Fél. is also elevated to species status, as M. simulans (Jacq.-Fél.) R. D. Stone & Ghogue. Conservation assessments are provided for all the newly named taxa. A key is provided
to the species of Memecylon sect. Afzeliana. 相似文献
3.
Fourteen new species of palms (Arecaceae) from Madagascar are described and named, based on material collected over the last
15 years. Twelve species belong to the genus Dypsis, namely D. andilamenensis Rakotoarin. & J. Dransf., D. anjae Rakotoarin. & J. Dransf., D. betsimisarakae Rakotoarin. & J. Dransf., D. culminis Rakotoarin. & J. Dransf., D. dracaenoides Rakotoarin. & J. Dransf., D. gautieri Rakotoarin. & J. Dransf., D. gronophyllum Rakotoarin. & J. Dransf., D. jeremiei Rakotoarin. & J. Dransf., D. metallica Rakotoarin. & J. Dransf., D. reflexa Rakotoarin. & J. Dransf., D. sancta Rakotoarin. & J. Dransf. and D. vonitrandambo Rakotoarin. & J. Dransf. and two species belong to the genus Ravenea: R. beentjei Rakotoarin. & J. Dransf. and R. hypoleuca Rakotoarin. & J. Dransf. Despite the fact that most of these species have been recorded from protected areas that are difficult
to access in the eastern region of Madagasacar, they are all threatened. Based on IUCN categories and criteria, seven are
Critically Endangered and seven are Vulnerable. 相似文献
4.
Oliganthes anjanaribensis Beentje & D. J. N. Hind (Compositae: Vernonieae), a forest shrub from a protected area in NE Madagascar, is described and illustrated. Both species and genus are endemic
to Madagascar. The conservation status of the species is briefly discussed. 相似文献
5.
Cortinarius breviradicatus sp. nov., found in deciduous forests, is described and illustrated from Niigata, Japan. It is characterized by its medium-sized
to large dark brown basidiocarp, acutely conical pileus, and rooting stipe, and by subglobose to broadly ellipsoid basidiospores.
In addition, the extracting solution from its basidiocarps exhibits a strong fluorescence around 400–430 nm in ultraviolet
radiation (250 nm), which was observed in a species of Cortinarius sect. Orellani. The new species belongs to the section Orellani. The differences between the new taxon and similar species are briefly discussed. 相似文献
6.
Summary
Erythroxylum longisetulosum I. Loiola & M. F. Sales and E. timothei I. Loiola & M. F. Sales (sect. Rhabdophyllum) from north-eastern Brazil are described and illustrated, and their taxonomic and ecological relationships are discussed. 相似文献
7.
Summary
Linaria khalkhalensis Hamdi & Assadi is described as a new species from Azerbaijan and Guilan provinces (northern Iran), belonging to Linaria sect. Linaria. It is close to Linaria lineolata Boiss. and L. elymaitica (Boiss.) Kuprian., which it resembles in habit and vegetative features. However, floral and seed characters together with
a distinctive geographical distribution, warrant recognition at the species rank. An illustration of the new species, a distribution
map, scanning electron micrographs of seed and capsule surfaces, and an identification key are also included. 相似文献
8.
Iain Darbyshire 《Kew Bulletin》2008,63(2):261-268
Summary Three new species are described in Barleria L. sect. Stellatohirta M. Balkwill from tropical Africa: B. aristata from south-central Tanzania, B. aenea from south-western Tanzania and northeast Zambia, and B. purpureotincta from south-western Zambia. Their affinities and conservation status are discussed. 相似文献
9.
10.
Summary A new species of Macroptilium sect. Microcochle (Benth.) J. A. Lackey is herein described from the states of Piauí and Bahia, Brazil. Macroptilium cochleatum is characterized by few-flowered inflorescences, calyx teeth longer than the tube, a tightly four-coiled keel, and linear,
patent fruits. The discovery of this unique Macroptilium species, with its distally coiled keel, expands the diagnostic features of the genus. A key to the Brazilian species of sect.
Microcochle is provided. 相似文献
11.
Four species of Mastigostyla (Iridaceae) from Bolivia are described, illustrated and maps of their distribution provided: M. cardenasii R. C. Foster, M. chuquisacensis Huaylla & Wilkin, M. torotoroensis Huaylla & Wilkin and M. woodii Huaylla & Wilkin, the last three as new species. Mastigostyla gracilis R. C. Foster is synonymised under M. cardenasii R. C. Foster. Notes on conservation status, nomenclature and identification are included. Although some uncertainty exists
over generic placement due to phylogenetic systematic research now in progress, marked infraspecific variation is documented
for the first time within South American Tigridieae. This draws attention to the need for more extensive sampling if adequate
species delimitation is to be achieved in Tigridieae. Photographs illustrate morphological variation in all four species.
A key is provided to facilitate identification of Bolivian Mastigostyla. 相似文献
12.
Mycena haushoferi, a new species of the section Intermediae collected in Bavaria, is described and compared with four other species of the sect. Intermediae known from the Northern Hemisphere and with M. cystidiosa and M. metuloidifera, two species of sect. Metuloidiferae. The five known species of Northern Hemisphere of section Intermediae are keyed out. 相似文献
13.
Paul Wilkin John Burrows Sandie Burrows A. Muthama Muasya Erich van Wyk 《Kew Bulletin》2010,65(3):421-433
A new species of Dioscorea from South Africa, D. strydomiana Wilkin, is described and illustrated. It differs from the related species D. elephantipes (L’Hér.) Engl., D. hemicrypta Burkill and D. sylvatica Eckl. in its tuber surface, leaf morphology, texture and habit, male flower tepal, filament and pistillode size, the length
of the stipe between the ovary apex and the torus in female flowers and in capsule shape. Just two populations and c. 200
individuals in total exist, and significant threats have been reported, making D. strydomiana critically endangered. Thus its conservation and sustainable use are discussed. 相似文献
14.
Summary Three closely affiliated species of Heterospathe Scheff. (H. elegans (Becc.) Becc., H. humilis Becc. and H. versteegiana Becc.) from New Guinea are revised. They are reduced to a single species which is divided into two subspecies, and the new
combination H. elegans subsp. humilis (Becc.) M. S. Trudgen & W. J. Baker is made. The subspecies can be readily distinguished by their growth habit. Epitypes
are designated for the three previously published names, as informative material on the habit is not included in the existing
type specimens. A new, potentially related species is described as H. pullenii M. S. Trudgen & W. J. Baker. 相似文献
15.
A new species of Baccharis L. sect. Caulopterae DC. (Compositae) of the high altitude grasslands of Southern Brazil is presented: Baccharis sphagnophila A. A. Schneid. & G. Heiden. The new species is described, illustrated and compared with similar species. 相似文献
16.
17.
Summary Described and illustrated is Warneckea austro-occidentalis R. D. Stone, an endemic of tropical forests in Cameroon’s South West Province and adjacent Nigeria. The name W. mangrovensis (Jacq.-Fél.) R. D. Stone is also proposed at species level for the taxon originally described as W. fascicularis var. mangrovensis Jacq.-Fél. An IUCN (2001) status of endangered is assigned for both W. austro-occidentalis and W. mangrovensis. 相似文献
18.
Nguyen Van Du 《Kew Bulletin》2008,63(3):491-493
Summary
Typhonium stigmatilobatum V. D. Nguyen, a new species from Vietnam, is described and illustrated. 相似文献
19.
Three new species of the Brazilian genus Luetzelburgia Harms (Leguminosae, Papilionoideae, Sophoreae sensu lato (Vataireoid clade)) are described and illustrated under the names Luetzelburgia harleyi D. Cardoso, L. P. Queiroz &; H. C. Lima, L. neurocarpa D. Cardoso, L. P. Queiroz &; H. C. Lima and L. purpurea D. Cardoso, L. P. Queiroz &; H. C. Lima. All three occur in the caatinga vegetation of the State of Bahia, Eastern Brazil.
A discussion of the morphological characters distinguishing the new species from their close relatives, as well as an identification
key to all known species of Luetzelburgia, are presented. 相似文献
20.
Summary The new species Eugenia pallidopunctata, E. caducibracteata, E. tenuiflora and E. breviracemosa from the Brazilian Amazon, all belonging to Eugenia sect. Racemosae (Myrtaceae), are described, illustrated and compared with their putative close relatives. Data on the geographic distribution and habitat
are given for the new taxa, as well as illustrations. 相似文献