Nanocnide pilosa Migo

Aoki, Satoshi, Li, Pan, Matsuo, Ayumi, Suyama, Yoshihisa & Ito, Motomi, 2023, Molecular phylogeny and taxonomy of the genus Nanocnide (Urticaceae) with particular attention to the Ryukyu Islands endemic N. lobata, Phytotaxa 607 (1), pp. 23-40 : 37

4. Nanocnide pilosa Migo , Trans. Nat. Hist. Soc. Taiwan 24: 386. 1934.

Type:— Mainland China. Kunshan, 10 June 1934, H. Migo s.n. (holotype- TI!) .

Description:—Annual and potentially perennial herbs. Stems ascending to erect, up to 9 cm long, covered with depressed hairs. Leaves petiolate, opposite when young, alternate when mature; blades flabellate to ovate, up to 2.3 cm long, pubescent, apex acute to rounded, base acute to rounded, rarely cordate, margin dentate, with 11–15 teeth on edge of the largest leaf; petioles pubescent, grooved on adaxial surface, up to 1 cm long. Stipules opposite, persistent after leaf deciduation, ovate to lanceolate, ca. 1 mm long. Flowers diclinous. Staminate inflorescence determinate umbel, axillary; peduncles pubescent; first peduncle on a shoot up to 1.1 cm long, those that develop before the pistillate elongate at level of highest leaves; pedicels ca. 1 mm long; bracts membranous, lanceolate. Male flowers ca. 1.5 mm in diameter when in bud, perianth lobes 5 rarely 4, strigose, margin entire, upper surfaces green; stamens 5, rarely 4; filaments white, translucent; anthers white; pistillode pentagonal circularly hollow at center. Pistillate inflorescence determinate umbel, solitary, axillary, forming monochasia on apices; peduncles almost sessile, rarely elongate; pedicels subsessile. Female flower: perianth lobes 4, unequal in size, two longer ones lance-ovate, cymbiform, two shorter ones lanceolate, having long spikes on midribs; style shorter than 0.5 mm; ovary asymmetric, laterally compressed; stigma pilose, white when fresh, brown when dried. Achenes ca. 1.5 mm long, covered with gel when watered for the first time. Staminate flowers inflorescent in spring, pistillate flowers and a small number of staminate flowers inflorescent successively.

Distribution:—Subtropical regions in East and Southeast Asia: Japan, Mainland China and Vietnam.

Habitat:—Humid forest sides (in Japan); shady, moist places in forests, grasslands, rock crevices, along streams; near sea level to 1400 m (in China, according to Chen et al. 2003a); wet moist rocks on limestone (in Vietnam).

Representative specimens examined:— Japan. Kagoshima: Ishiki , 15 Mar. 2018, S. Aoki 629 ( TI). Mainland China. Anhui: Huanshang , 12 Apr. 2017, P. Li et al. s.n. ( HZU 30528 ) . Vietnam. Cao Bang: Ha Lang, Thang Loi, Lung Sam , 23 Apr. 1999, P. H. Hoang & L. Averyanov CBL 1653 (P 06817933) .