A new and unusual species of Dichaea (Orchidaceae: Zygopetalinae) from Costa Rica

被引：2
作者：
Pupulin, F. [1 ,2 ,3 ]
Karremans, A. P. [1 ,4 ]
机构：
[1] Univ Costa Rica, Jardin Bot Lankester, POB 302-7050, Cartago, Costa Rica
[2] Harvard Univ Herbaria, Cambridge, MA 02138 USA
[3] Marie Selby Bot Gardens, Sarasota, FL 34236 USA
[4] Naturalis Biodivers Ctr, Endless Forms, POB 9517, NL-2300 RA Leiden, Netherlands
来源：
BLUMEA | 2020年 / 65卷 / 01期
关键词：
autogamy; Dichaeopsis; Flora of Costa Rica; new species; plant diversity; section Pseudodichaea;
D O I：
10.3767/blumea.2020.65.01.06
中图分类号：
Q94 [植物学];
学科分类号：
071001 ;
摘要：
A new and florally unusual species of the genus Dichaea is described and illustrated from Costa Rica, where it is apparently endemic, and its relationships are discussed. Dichaea auriculata is compared with the group of species close to D. graminoides, from which it can be distinguished by the lip with a long isthmus, provided with two rounded auricles at the base, instead of the sessile lip typical of the group. It is also compared with another Costa Rican endemic in the same complex, D. gracillima, from which it can be distinguished by the autogamous, mostly cleistogamous, flowers, the 3-lobed lip with rounded basal lobes, the high keel along the lip isthmus, and the bifid ligule of the column. Notes on the habitat and the ecology of the new species are provided.
引用
收藏
页码：61 / 64
页数：4
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