 |
| Carex pingleensis Z.C. Lu, Y.F. Lu & X.F. Jin,
in Lu, Su, et al., 2020.
|
Abstract
Carex pingleensis Z.C. Lu, Y.F. Lu & X.F. Jin, a new species of Carex sect. Mitratae Kük. from northeastern Guangxi, China, is described and illustrated. This species is easily distinguished from all the other species of sect. Mitratae by its spikes gathering at the top of culms; nutlets neither contracted on angles nor excavated at faces; male glumes apex obtuse, both sides united near base, abaxial surface with pubescence and utricles shorter, only 2.8–3.2 mm long, densely pubescent.
Keyword: Carex pseudotristachya, Carex tristachya, Cyperaceae, morphology, taxonomy
 |
| Fig. 1. Carex pingleensis: A. Habit, B. Inflorescence, C. Male glume, D. Female glume, E. Utricle, F. Nutlet. |
 |
| Fig. 2. Carex pingleensis: A. Habit, B. Inflorescence, C. Spike female, D. Utricles, E. A part of leaf, F. Female glumes, G. Nutlet. |
Carex pingleensis Z.C. Lu, Y.F. Lu & X.F. Jin, sp. nov.
平樂薹草
Type: CHINA. Guangxi: Guilin City, Pingle County, Yao Nationality Township of Dafa, Pingshan Village, in evergreen broad-leaved forests, elevation ca. 440 m, 20 May 2019, Yu-Lan Su and Jin-Quan Huang LZC199 (holotype: IBK00421264; isotype: IBK00421266 and HTC).
Diagnosis: Carex pingleensis is similar to Carex pseudotristachya X.F. Jin & C.Z. Zheng and Carex tristachya Thunb., but differs from the latter two species in its culms 6–9.5 cm tall (vs. 15–20 cm and vs. 20–45 cm); leaves much surpassing the culms (vs. equaling to exceeding culms and vs. shorter than or nearly equaling culms); male glumes abaxial surface with pubescence (vs. glabrous and vs. glabrous); utricles 2.8–3.2 mm long (vs. 4.5–5 mm and vs. 3–3.2 mm), densely pubescent (vs. puberulent and vs. puberulent).
Distribution and habitat: Carex pingleensis has only been collected from Pingle County, Guangxi, China. This new species grows in a valley of evergreen broadleaved forests, at an elevation of 400–500 m. Associated species include Cibotium barometz (L.) J. Sm., Diospyros xiangguiensis S. Lee, Ficus langkokensis Drake, Helicia reticulata W.T. Wang, Homalium cochinchinense (Lour.) Druce, Nothapodytes pittosporoides (Oliv.) Sleumer, Pilea peploides (Gaudich.) Hook. et Arn., Pothos chinensis (Raf.) Merr.
Etymology: The specific epithet ‘pingleensis’ refers to the type locality of this new species.
Zhao-Cen Lu, Yu-Lan Su, Yi-Fei Lu and Xiao-Feng Jin. 2020. Carex pingleensis (Carex sect. Mitratae), A New Species of Cyperaceae from Guangxi, China. Taiwania. 65(3); 391-395. taiwania.ntu.edu.tw/abstract.php?type=abstract&id=1699
