Chamaesium delavayi (Franch.) Shan & Liou

Guo, Xian Lin, Wang, Chang Bao, Wen, Jun, Zhou, Songdong & He, Xing Jin, 2018, Phylogeny of Chinese Chamaesium (Apiaceae: Apioideae) inferred from ITS, cpDNA and morphological characters, Phytotaxa 376 (1), pp. 1-16 : 10

Chamaesium delavayi (Franch.) Shan & Liou in Liou (1979: 130)

≡ Trachydium delavayi Franchet (1894: 110)

≡ Chamaesium novemjugum var. delavayi (Franch.) Norman (1938: 230) ( Fig. 4 )

Type: — CHINA. Yunnan: Heqing, Mt. Maer , 3500 m, J.M.Delavay 3911 (lectotype: P00834660 !, designated by Pimenov 2017; isolectotypes: A00062642!, GH00062643!, K000697367!, K000980124!, NY00406294!, P00245415 !, P 04142109!) .

Notes: — Chamaesium delavayi usually possess branching stems, obsolete bracts and bracteoles, overlapping and nearly round segments of leaves, yellow-green not white petals and fruits with slightly concave endosperm face and plane exocarp face. C. delavayi is similar to C. spatuliferum in shape of basal leaves, but differs in the latter have developed bracts and bracteoles ( Guo et al. 2017a).

Distribution in China: — Yunnan. Endemic. ( Fig. 3 )

Habitat: — Chamaesium delavayi usually grows on 3800–3900 m alpine meadow.

Specimens examined: — CHINA. Yunnan: Heqing Xian, Mt. Maer, 3900 m, 25 July 1963, Jinshajiang team 6099, 3085 & 6085 (KUN); Heqing Xian, Mt. Maer, 3800 m, 28 August 192, R.C.Ching 24167 (KUN); Heqing Xian, Mt. Maer, 3800 m, 10 July, 2015, X.L.Guo GXL15071001 (SZ); Heqing Xian, Ganhaizi, 3850 m, 27 August 2016, X.L.Guo & C.Xie GXL16082701 (SZ).

Figures

FIGURE 3. Geographic distribution of Chamaesium in China.

FIGURE 4. Chamaesium delavayi. A. cross section of mericarp; B. blade of basal leaf; C. habit; D. fruiting umbel; E. dorsal view of mericarps. [A, C and E from GXL1507100101; B, D from GXL1507100102].