Sinosasa damingshanensis N. H. Xia & Y. L. Ding 2025, comb. nov.

Sinosasa damingshanensis (Hsueh & W. P. Zhang) N. H. Xia & Y. L. Ding comb. nov. Figs 2, 3, 4 Basionym. Chimonobambusa damingshanensis Hsueh & W. P. Zhang, Bamb. Res. 7 (3): 5. (1988). Lectotype (here designated). China • Guangxi, Nanning, Wuming, Daming Mountain, 12 Nov. 1986, C. J. Hsueh 8605 fl. (Lectotype: SWFC!). Revised description. Shrubby bamboos. Rhizomes leptomorph, rhizome internodes cylindrical, 2.45–4.75 cm long, nearly solid; nodes prominent, 2–4 roots at each node; rhizome bud ovate, ca. 4 mm high. Culms 1.5–2 m tall, 5–8 mm in diam; internodes terete, 5.4–13 cm long, initially with white pubescent gradually glabrous; supranodal ridge conspicuous, intranodes glabrous, 3–4 mm tall, infranodal region with a creamy-yellow and sericeous ring; branches solitary at each branching node. Culm bud solitary, triangular-ovate, sunken into supranodal ridge. Culm leaf sheaths persistent or tardily deciduous, papery, shorter than or as long as internode, abaxially glabrous or sparsely strigose, 6.8–13.3 cm high; sheath scar flat or slightly prominent; auricles and oral setae absent; blades erect, triangularly subulate, 1.6–4.5 mm high, glabrous. Foliage leaves 5–10 per ultimate branch; foliage leaf sheaths glabrous, purple or purple-green; auricles linear, 1–2 mm wide; oral setae erect or curled, 4–8, pale yellow, 2.5–6 mm long, easily deciduous when old; ligules developed, (3.3) 6–10 (– 16) mm high, papery. Blades lanceolate, papery, 12.5–31.7 × 1.0– 4.9 cm, both surfaces glabrous, margins serrulate along both sides, secondary veins 3–4 (6) pairs, significantly elevated on the lower leaf surface. The unit of the inflorescence raceme-like; lemma papery, ovate-lanceolate, ca. 10 mm long, glabrous; palea shorter than lemma, 6–7 mm long, 2 - keeled; 2 stigmas, 3 stamens; ovary ellipsoid; style short. Fruit unknown. Notes. Chimonobambusa damingshanensis Hsueh & W. P. Zhang was originally described based on C. J. Hsueh 8605 which contains multiple specimens. According to the ICN (Turland et al. 2018) Art. 8.1, “ The type (holotype, lectotype, or neotype) of a name of a species or infraspecific taxon is either a single specimen conserved in one herbarium or other collection or institution, or a published or unpublished illustration ”, C. J. Hsueh 8605 fl. (SWFC, floriferous specimen) is designated here as the lectotype of Ch. damingshanensis. It has flower specimens and is more complete. Phenology. New shoots produced during April to May. Chinese name. 大明山华赤竹 (Chinese pronunciation: dà míng shān huá chì zhú). Distribution and habitat. Broad-leaved forests; It is endemic to Daming Mountain in Wuming District, Guangxi, China. Additional specimen examined. Sinosasa damingshanensis: China • Guangxi: Nanning, Wuming, Daming Mountain, 23°29′43.9″N, 108°26′14.0″E, alt. 1224–1445 m a. s. l., 25 December 2024, Y. L. Ding & Y. T. Zhang WM 241225 (NF!).