A new tiny-leaved species of Raveniopsis (Rutaceae) from the Pakaraima Mountains of Guyana

被引：3
|
作者：
Wurdack, Kenneth J. [1 ]
机构：
[1] Smithsonian Inst, Natl Museum Nat Hist, Dept Bot, MRC 166, POB 37012, Washington, DC 20013 USA
来源：
PHYTOKEYS | 2017年 / 91期
关键词：
Guiana Shield; Guyana; Kamakusa Mtn; leaf anatomy; Raveniopsis; Rutaceae; trichomes; NONCODING REGIONS; CPDNA;
D O I：
10.3897/phytokeys.91.14763
中图分类号：
Q94 [植物学];
学科分类号：
071001 ;
摘要：
Raveniopsis microphyllus K. Wurdack, sp. nov., a new species known only from a single peak in the Pakaraima Mtns. of Guyana, is described and illustrated. This white-flowered shrub adds to the many narrow-endemic Guiana Shield species in the genus, and is unique in bearing small, trifoliate, sclerophyllous leaves. Leaf anatomy and surface micromorphology of the new species were examined to document its montane adaptations. The multiple trichome types of the leaves and flowers of new species were characterized, and the systematics value of the considerable foliar trichome variation in Raveniopsis is discussed.
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页码：1 / 12
页数：12
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