Chamaesium paradoxum Wolff (1925: 275)

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 : 11

Chamaesium paradoxum Wolff (1925: 275)

≡ Trachydium paradoxum (H. Wolff) Hiroe (1979: 714) ( Fig. 6 )

Type: CHINA. Sichuan: Kangding, Xinduqiao, Tongolo, 21 July 1894, J.A. Soulié 2621, 2612 (lectotype: BM!, designated by Pimenov, 2017: 131).

= Trachydium novemjugum Clarke (1879: 672) var. tongolense Boissieu (1902: 802)

Type: CHINA. Sichuan, Tongolo, 1893, J.A.Soulié 705(619) (lectotype: P03810931 ! designated by Pimenov, 2017: 131; isolectotype: K001091334) .

Notes: — C. paradoxum have entire and ovate-lanceolate radical leaves, linear and entire bracts and fruits with obviously regular, thick ribs. In addition, the taxonomic identification of this species can be inferred on the basis of its geography distribution.

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

Habitat: —The species occurs in thick growth of grass or shrubs.

Specimens examined: CHINA. Sichuan: Without specific location, 4200 m, 29 August 1965, K.J.Fu 16453 (WUK); Kangding Xian, Tagong, 3750 m, 2 September 1984, Y.J.Li 408 (CDBI); Kangding Xian, Tagong, 3600 m, 21 September, 1984, G.Yao 698 (NAS); Kangding Xian, Xinduqiao, 4000 m, 3 September 1982, T.C.Wei 29664 (CDBI); Kangding Xian, Xinduqiao, 3750 m, 21 July 1963, K.J.Guan & W.C.Wang 853 (PE); Kangding Xian, Shangeke, 3920 m, 3 July 1981, Q.Q.Wang 28650 (CDBI); Kangding Xian, Mt. Zheduo, 4000 m, 9 September 1981, L.R.Xu 31 (WUK); Kangding Xian, Mt. Zheduo, 4000 m, 28 July 1963, K.J.Guan & W.C.Wang 1007 (PE); Kangding Xian, Mt. Zheduo, 4000 m, 25 July 2015, X.L.Guo GXL15092501 (SZ); Kangding Xian, Shaoxiangping, 2 June 1980, P.S.Liu 113755 (CDBI); Kangding Xian, Mt. Tapao, 24 August 1934, Z.S.Liu 1327 (PE); Kangding Xian, Qianning, 3550 m, 22 July 1959, S.Jiang & C.L.Jin (SZ); Jiulong Xian, Mt. Jichou, 3600 m, 1 July 1979, Q.Q.Wang 20304 (CDBI); Jiulong Xian, Tanggu, 1 July 1979, Q.Q.Wang 20483 (CDBI); Jiulong Xian, Mt. Haite, 3600 m, 15 September 2015, X.L.Guo GXL15091502 (SZ); Dawu Xian, Bamei, 3600 m, 27 September 2015, X.L.Guo GXL15092701 (SZ).

Figures

FIGURE 3. Geographic distribution of Chamaesium in China.

FIGURE 6. Chamaesium paradoxum. A. cross section of mericarp; B. blade of basal leaves; C. habit; D. fruiting umbellet with bracteoles; E. dorsal view of mericarp. [A, C, D and E from GXL1509270101; B from GXL1509270102].