No.12 QIONG FU, YING XIA, YING GUO, RONG HUANG, YING-QIANG WANG
Oreocharis odontopetala, a new species of Gesneriaceae from Guizhou, China
PhytoKeys 2019（124）:1-9
Abstract
A new species, Oreocharis odontopetala Q.Fu & Y.Q.Wang from Guizhou Province in southwest China, is described and illustrated, based on morphological comparison with existing species. It is morphologically most similar to O. elegantissima, but can be easily distinguished by its adaxially bullate leaf blade, abaxially conspicuous reticulate veinlets, brown-purple peduncles, triangular adaxial corolla lobes and abaxial corolla lobe margins bearing 4–10 long teeth, glabrous style and shorter stamens with confluent thecae at the apex, as well as leaf epidermal characters.
Original paper link: https://phytokeys.pensoft.net/article/34609/download/pdf/
This Paper can be downloaded from this link.
Figure 1. Oreocharis odontopetala. A habit; B flower; C opened corolla, showing lip lobes and stamens; D abaxial stamens (dorsal view); E cohering pair of anthers (anterior view); F adaxial stamens (dorsal view); G calyx, pistil and stigma; H bracts (ventral and dorsal view); I sepals (the two on the right showing ventral view and the three on the left showing dorsal view); J adaxial leaf surface; K abaxial leaf surface. Drawn by Ms Yun-Xiao Liu based on the holotype (WYQ-2018-112).
Figure 2. Morphological comparison of (A) Oreocharis odontopetala and (B) O. elegantissima. -1 habitat and habit. -2 adaxial leaf surface. -3 abaxial leaf surface. -4 opened corolla, showering lip lobes and stamens with anthers cohering in pairs. -5 anthers. -6 thecae, showing confluence at apex (white arrowhead), or no confluence (black arrowhead). -7 immature pistil and disc, showing glandular pubescence (B) or absence (A).
Figure 3. Comparative morphology (LM & SEM) of leaf epidermal surface and epidermal cells of style between (A) Oreocharis odontopetala and (B) O. elegantissima. -1 adaxial leaf epidermal cells (LM). -2 adaxial leaf epidermal trichome and its cuticular membrane (SEM). -3 abaxial leaf epidermal cells (LM). -4 abaxial leaf cuticular membrane and stomata (SEM). -5 style epidermal cell shape and ornamentation (SEM).
