全 文 ：Journal of Systematics and Evolution 46 (2): 226–229 (2008) doi: 10.3724/SP.J.1002.2008.07124
(formerly Acta Phytotaxonomica Sinica) http://www.plantsystematics.com
Carex damiaoshanensis X. F. Jin & C. Z. Zheng, a new species
of Cyperaceae from Guangxi, China
1Xiao-Feng JIN* 2Chao-Zong ZHENG
1(School of Life & Environment Sciences, Hangzhou Normal University, Hangzhou 310036, China)
2(College of Life Sciences, Zhejiang University, Hangzhou 310012, China)
Abstract Carex damiaoshanensis X. F. Jin & C. Z. Zheng, a new species of Cyperaceae from Guangxi, China,
is described and illustrated. This new species resembles C. scaposa C. B. Clarke in its arundinaceous leaves and
spikes arranged in a compound panicle, but differs from the latter in having glabrous culms, cauline leaves, and
rachises of secondary inflorescences, panicle with fewer secondary inflorescences, and spikes with sparse pistillate
flowers. Micromorphology of culms, cauline leaves, peduncles of secondary inflorescences, and achenes under
SEM supports the recognition of this new species as well.
Key words Carex, Carex damiaoshanensis X. F. Jin & C. Z. Zheng, China, Cyperaceae, Guangxi, new species.
When we examined the specimens of Carex L.
(Cyperaceae) in the herbaria of IBK, GXMI, KUN and
PE, some specimens determined as C. scaposa C. B.
Clarke or C. liouana Wang & Tang caught our atten-
tion. These specimens have secondary inflorescences
that have 3–4 spikes, with spikes being racemose and
sparsely flowered, and culms being glabrous. These
features indicate that the specimens have been incor-
rectly identified. Further examination and observation
of these specimens revealed that this taxon was mor-
phologically similar to C. scaposa C. B. Clarke, but
differs in having glabrous culms, cauline leaves, and
rachises of secondary inflorescences, panicle with less
secondary inflorescences, and spikes with sparse
pistillate flowers. All these characteristics suggest that
these specimens should represent a hitherto unde-
scribed species.
Carex damiaoshanensis X. F. Jin & C. Z. Zheng
(sect. Hemiscaposae C. B. Clarke), sp. nov. Fig. 1
大苗山薹草
Haec species proxima C. scaposa C. B. Clarke,
sed culmis, foliis culmorum et rhachidibus inflores-
centiis secundariis glabris, inflorescentiis secundariis
minoribus, spicis floribus pistillatis sparse dispositis
differt.
Rhizama lignosum. Culmi caespitosi, laterales,
25–40 cm alti, circ. 2 mm crassi, triqueter, glabri.
Folia sterilia 3, caespitosa, anguste oblanceolata,
papyracea, 30–40 cm longa, 1.5–2.5 cm lata, plana,
utrinque glabra, apice acuminata, basi in petiolum
6–10 cm longum attenuate; folia culmorum
spathiformes, membranacea, glabra, rubro-brunnea,
ferrugineo-punctata. Panicula 4–6 inflorescentiis
secundariis. Inflorescentiae secundariae triangulariter
ovatae, solitariae quoque nodo insertae, spicis 3–4,
pedunculis gracilibus, 2–6 cm longis, glabris, e
vaginis exsertis. Spicae ad prophyllis saccatis ananthis
gerentibus, lineari-cylindricae, 8–12 mm longae,
androgynae, epedunculis; pars staminata linearis, 4–7
mm longa, ei pistillata subaequilonga vel ea paullo
longior; pars pistillata 4–6 mm longa, 1–3-floribus.
Prophylla saccata, ananthis, 3–3.5 mm longa,
multinerves, rubro-brunnea, ferrugineo-punctata.
Squamae staminatae triangulariter late ovatae,
testaceae, membranaceae, 1–1.5 mm longae, apice
obtusae, dense maculis et filis brunneis, dorso 1
nerves. Squamae pistillatae late ovatae, 1.5–2 mm
longae, testaceae, apice obtusae, dense maculis et filis
brunneis, glabrae, dorso 1 nerves. Perigynia ovoidea,
trigona, 4–5 mm longa, membranacea, fulva, dense
maculis et filis brunneis, multinerves, basi cuneata,
apice in rostrum circ. 2 mm longum ore oblique
sectum. Acheniis arcte inclusis, ovoidis, trigonis,
2–2.5 mm longis, cinereo-brunneis. Stylus basi coni-
cus. Stigmata 3. Fl. & fr. Mai.–Sept.
China. Guangxi (广西): Rongshui (融水), Mt. Damiao
(大苗山), Mt. Wubei (屋背山), on rock by valley, alt. 480 m,
1955-05-02, S. H. Chun (陈少卿 ) 8873 (holotype, IBK;
isotype, KUN); Bentong (本垌), alt. 1200 m, 1957-05-15, T. C.
Chen (陈德昭) 97 (IBK); the same locality, 1957-05-24, T. C.
Chen (陈德昭) 342 (IBK); Antai (安太), Mt. Yuanbao (元宝
山), alt. 1700 m, 1978-05-06, S. M. Jia & Y. P. Tao (贾世明,
陶一鹏) 53-171 (GXMI); Mt. Jiuwan (九万山), alt. 900–1150
m, 1958-06-17, S. H. Chun (陈少卿) 14499 (PE); without
precise locality, 1928-09, Kwangsi Exped. (广西队) 5693 (PE).

———————————
Received: 20 September 2007 Accepted: 21 November 2007
* E-mail: jinxf1@tom.com.
JIN & ZHENG: Carex damiaoshanensis, a new species of Cyperaceae from China

227


Fig. 1. Carex damiaoshanensis X. F. Jin & C. Z. Zheng. A, habit; B, spike; C, cauline leaf; D, staminate glume; E, pistillate glume; F, perigy-
nium; G, achene. Drawn by X. F. Jin from the holotype, S. H. Chun 8873.
Journal of Systematics and Evolution Vol. 46 No. 2 2008 228
This new species belongs to Carex sect. Hemis-
caposae C. B. Clarke, characterized by basal leaves
being arundinaceous and caespitosed, and spikes
arising from a sacculate cladoprophyll without pistil-
late flowers. It closely resembles C. scaposa C. B.
Clarke in its arundinaceous leaves, spikes arranged in
a compound panicle, but differs in having glabrous
culms, cauline leaves, rachises of secondary inflores-
cences, secondary inflorescences with fewer spikes,
and spikes with sparse pistillate flowers. Morphologi-
cal characters distinguishing the new species and C.
scaposa are detailed in Table 1.
Glabrous culms, cauline leaves, and peduncles of
secondary inflorescences of C. damiaoshanensis can
be found not only under a magnifying lens, but also
under the scanning electronic microscope (SEM)
(Hitachi S-570) (Fig. 2: A–C), and those of C.
scaposa showed pubescent (Fig. 2: F–H). Under the
SEM, achene surface also shows difference between
the new species and C. scaposa. The surface orna-
mentation of the achene of C. damiaoshanensis is
shallow-scrobiculate (Fig. 2: D, E), but that of C.
scaposa is tuberculate (Fig. 2: I, J).

Table 1 Comparison of Carex damiaoshanensis and C. scaposa
Characters C. damiaoshanensis C. scaposa
Basal leaves 3-caespitosed 3–5-caespitosed
Indumentum of cauline leaves glabrous pubescent
Indumentum of culm glabrous pubescent
Indumentum of rachis of secondary inflorescence glabrous pubescent
Spike number of secondary inflorescence 3–4 8–17
Spike length 8–12 mm long 5–14 mm long
Pistillate flower of spike 1–3 flowers 2–7 flowers
Staminate glume 1–1.5 mm long 3–3.5 mm long
Pistillate glume 1.5–2 mm long 2–2.5 mm long
Distribution Restricted in Mt. Damiao and Mt.
Jiuwan of southern Guangxi
China (Fujian, Guangdong, Guangxi, Guizhou, Hunan,
Jiangxi, Sichuan, Yunnan, Zhejiang) and Vietnam




Fig. 2. SEM photographs of Carex damiaoshanensis (A–E) and C. scaposa (F–J). A, F, Culm. B, G, Peduncle of secondary inflorescence. C, H,
Cauline leaf. D, I, Achene. E, J, Achene surface.
Scale bars: A, F, 0.5 mm; B, G, 0.3 mm; C, H, 0.6 mm; D, I, 0.6 mm; E, J, 30 µm.
JIN & ZHENG: Carex damiaoshanensis, a new species of Cyperaceae from China

229
Carex damiaoshanensis is endemic to southern
Guangxi. This species is known only from its type
locality and adjacent area, Mt. Damiao and Mt. Jiu-
wan. It grows in rocky valley and forest margin at the
altitude of 480–1700 m.
Acknowledgements This work was supported by
the startup scientific research project of Hangzhou
Normal University (D04031301). We are most grate-
ful to Professors Song-Yun LIANG, Lun-Kai DAI and
Dr. Shu-Ren ZHANG for their kind help and con-
tinuous encouragement, to Professor Wen-Tsai
WANG for his modifying the Latin description, and to
the curators of IBK, GXMI, KUN and PE for permit-
ting the first author to visit their herbaria.
中国广西薹草属(莎草科)一新种——大苗山薹草
1金孝锋* 2郑朝宗
1(杭州师范大学生命与环境科学学院 杭州 310036)
2(浙江大学生命科学学院 杭州 310012)

摘要 描述了我国广西大苗山莎草科Cyperaceae一新种——大苗山薹草Carex damiaoshanensis X. F. Jin & C. Z. Zheng。本种形
态上与花葶薹草C. scaposa C. B. Clarke接近, 区别主要在秆、秆生叶和支花序轴均无毛, 支花序数较少, 小穗疏生雌花。对秆、
支花序梗、秆生叶和小坚果扫描电镜观察也显示了这二者的区别。
关键词 薹草属; 大苗山薹草; 中国; 莎草科; 广西; 新种