Carex glossostigma Handel-Mazzetti (1922: 140)

Jin, Shui-Hu, Lu, Yi-Fei, Chen, Wei-Jie & Jin, Xiao-Feng, 2022, Notes on Carex (Cyperaceae) from China (VII): new synonyms and imperfectly known species, Phytotaxa 531 (1), pp. 54-62 : 54-55

Carex glossostigma Handel-Mazzetti (1922: 140) . Type:— CHINA. Hunan, Wukang [Wugang], Yün-schan [Yunshan], Apr. 1919, T.H. Wang 17 (holotype: WU; isotypes: K-00283477!).

= Carex hypoblephara Ohwi & T.S. Liu (in Ohwi 1936: 654). syn. nov. Type:— CHINA. Kiangsi [Jiangxi], Lushan , 28 Apr. 1935, T.S. Liu s.n. (holotype: KYO!).

= Carex exerta K.L. Chu (1938: 213) . Type:— CHINA. Chekiang [Zhejiang], Longquan , Maoshan , 14, May 1933, S. Chen 1380 (syntype: PE-02307839!), the same locality, 15 May 1934, S. Chen 3180 (syntype: PE-02307840!).

The holotype and isotype of Carex glossostigma Handel-Mazzetti (1922: 140) , a species now placed in sect. Siderosticta in Roalson et al. (2021), showed immature utricles and nutlets ( Figure 1 : A, B). This species is widely distributed in East to South China and more than 100 specimens were examined by the authors. This species is clearly identified as vegetative culms different from flowering culms, leaf blades considerably broader> 1 cm, abaxially glabrous to pilose, spikes androgynous, 1–5 in each bract sheath ( Dai et al. 2010) ( Figure 1 : D‒F, H).

Ohwi (1936: 654) described Carex hypoblephara and indicated in the protologue that this species was similar to C. foliosissima F. Schmidt (1868: 195) (placed in Conica clade in Roalson et al. 2021) in leaf shape and to C. pilosa Scopoli (1772: 226) (in sect. Paniceae in Roalson et al. 2021) in utricle shape. In Flora of China, Dai et al. (2010) placed this species in sect. Careyanae Tuckerm. ex Kükenthal (1909: 679) and recorded the terminal spike as staminate. The holotype of C. hypoblephara , collected from Lushan of E China, was carefully checked. It showed that leaf blades of vegetative culms are pilose on lower surfaces, spikes androgynous, 1–3 in each bract sheath, and utricles densely papillose and short beaked ( Figure 1 : C, G), which is consistent to those of C. glossostigma in Institutum Botanicum Academiae Sinicae (1976: 314), Zheng (1993: 300), Liang et al. (2000: 218) and Dai et al. (2010: 348). Consequently, C. hypoblephara is reduced to a synonym of C. glossostigma .

Figures

FIGURE 1. Types of Carex glossostigma and C. hypoblephara. (A): holotype of C. glossostigma in WU, (B): isotype of C. glossostigma in K, (C): holotype of C. hypoblephara in KYO, (D) and (E): syntypes of C. exerta in PE, (F): spikes of C. glossostigma, (G): spikes of C. hypoblephara, (H) spikes of C. exerta.