Circaea cordata Royle (1839: 211)

Luo, Yike & Xie, Lei, 2023, A checklist of Onagraceae in the Pan-Himalaya region, Phytotaxa 597 (4), pp. 245-268 : 251

2.2. Circaea cordata Royle (1839: 211) ( Fig. 2D ).

Lectotype (designated by Boufford 1982):— INDIA. Himachal Pradesh: Kotgarh, J. Royle s.n. ( LIV).

= Circaea × hybrida Handel-Mazzetti (1933: 605) .

Type:— CHINA. Yunnan: Mekong-Salwin-Kette, Schattige Gebüsche, 2730 m, 1914, G. Forrest 13254 (E) ( Handel-Mazzetti 1933).

Distribution: —W Nepal, S Hengduan, N Hengduan.

Note: —It’s the most distinctive species in Circaea with densely spreading pubescence on stems and absence of an exserted nectary in the flower ( Boufford 1982). Although Handel-Mazzetti (1933) stated in the protologue that the type of Circaea × hybrida is stored in E, we are not sure if there are duplicate sheets, and we cannot determine the type status by now.

Figures

FIGURE 2. Field photographs of Chamaenerion and Circaea.A:Chamaenerion angustifolium.B: Chamaenerion conspersum. C: Circaea alpina subsp. imaicola. D: Circaea cordata. E: Circaea repens. Photographed by Y.K. Luo & L. Xie.