Homostylium albescens var. pilosum (Hand. - Mazz.) Z. X. Fu, 2025

Chen, Xinyu & Fu, Zhixi, 2025, Resurrection of the genus Homostylium Nees for the former Aster ser. Albescentes Y. Ling (Astereae, Asteraceae), with an updated generic synopsis, PhytoKeys 259, pp. 27-66 : 27-66

publication ID	https://doi.org/10.3897/phytokeys.259.155606
DOI	https://doi.org/10.5281/zenodo.15683975
persistent identifier	https://treatment.plazi.org/id/F3EB54FA-F040-5059-935D-A7241D90C911
treatment provided by	PhytoKeys by Pensoft
scientific name	Homostylium albescens var. pilosum (Hand. - Mazz.) Z. X. Fu
status	comb. nov.

Treatment

1.9. Homostylium albescens var. pilosum (Hand. - Mazz.) Z. X. Fu comb. nov.

≡ Aster albescens var. pilosus Hand. - Mazz. View in CoL , Acta Horti Gothob. 12: 207. 1938. ≡ Sinosidus albescens var. pilosus (Hand. - Mazz.) G. L. Nesom View in CoL , Phytoneuron 2020-64: 13. 2020. Type: China, Yunnan, Lijiang, Ninglang and Yongsheng, 15 May 1922. J. F. Rock 5164 (holotype, WU, not seen; isotypes, E 00385623!, WU 1937-0004375!) (Suppl. material 1: figs S 18, S 19).

Type.

China • Yunnan, Lijiang, Ninglang and Yongsheng , 15 May 1922, J. F. Rock 5164 (holotype, WU, not seen; isotypes, E 00385623 !, WU 1937-0004375 !) (Suppl. material 1: figs S 18, S 19) .

Diagnosis.

Leaves oblong-lanceolate, 4–9 × 1–2 cm, abaxially on midvein or totally white pilose, adaxially sparsely hispidulous, flat. Phyllaries outer sparsely hairy. achenes densely pilose. The main differences from type variety include leaves oblong-lanceolate, abaxially sparsely pilose along the midvein or entirely, adaxially sparsely hispid, achenes densely villous.

Distribution.

Common. SW China (W Sichuan, E Xizang, NW Yunnan). 2800–4000 m.

Habitat.

Subalpine.

Etymology.

The varietal name “ pilosum ” is derived from the Latin “ pilus ”, meaning “ hair ”, combined with the neuter suffix “ - osum ”, meaning “ full of ” or “ abundant in ”. The name likely refers to abundant pilose on the abaxial surface of leaves.

Specimens examined.

China • Sichuan: Dege, Anonymous 115 (PE); Daocheng, Bot. Exped. 2436 (PE); Kangding, H. Smith 10436 (PE), 12912 (PE), 13990 (PE); Jinchuan, X. Li 78185 (PE); Lixian, S. Jiang et al. 1608 (PE); Precise locality unknown, S. Jiang et al. 2018 (PE); • Xizang: Nyingchi, Xizang Med. Herb Exped. 3450 (PE), D. E. Boufford et al. 30173 (PE), Y. T. Zhang & K. Y. Lang 1315 (PE 00274876, PE 00274877), B. S. Li et al. 6247 (PE); Mainling, Qinghai-Tibet Exped. 1961 (PE 00274878, PE 00274879), Xizang Med. Herb Exped. 3724 (PE), Qinghai-Tibet Supplement Team 750817 (PE 00274874, PE 00274875); Precise locality unknown, B. S. Li & S. Z. Cheng 5376 (PE 01824815, PE 01824816); • Yunnan: Dali, R. C. Ching 22919 (PE), Qin et al. 649 (PE); Qiaojia, B. X. Sun et al. 908 (PE); Lijiang, J. F. Rock 5164 (E 00385623, WU 1937-0004375).