Name:

Aspidistra thuongiana Vislobokov, Nuraliev, V.C.Nguyen & V.T.Pham, Phytotaxa 496(3): 264 (2021).

Holotype:

Vietnam. Binh Dinh Province: Tay Son District, Tay Phu commune, evergreen lowland forests on silicate rocks, around point 13°50’16.5”N 108°51’27.9”E, at elevation 600 m a.s.l., 14 March 2020, Pham Van The, Nguyen Van Canh, Nguyen Van Khuong PVT1026 (holotype VNM!; isotype VNMN: VNMN-B0020346!).

Distribution:

Vietnam: Binh Dinh province.

Phenology:

Flowering and fruiting in March–April in nature.

Description

from 

protologue:

Plant perennial, evergreen, herbaceous, rhizomatous, glabrous, ca. 40 cm tall. Rhizome creeping, epigeous, with short internodes, Ø 0.8–1.2 cm. Roots grey, Ø 4–5 mm. Rhizomes with regularly repeating units, each unit comprising several distichous cataphylls followed by a single foliage leaf. Cataphylls oblong, 2.5–12 cm long, 1.2–1.3 cm wide, rapidly withering. Leaves petiolate. Petiole green, adaxially sulcate, 27–42 cm long, Ø 3–4 mm. Lamina green, lanceolate to elliptic, basally cuneate and apically acuminate, 21–28.8 cm long, 6.2–8.5 cm wide, with midvein prominent at abaxial surface. Inflorescences axillary, up to 6 or probably more per rhizome unit. Peduncle light green, sometimes with dark red specks, erect and slightly nutant, 4–6 cm long, Ø 1.5–3 mm, with 4–5 distichously arranged bracts. Bracts pale green with dark red specks, broadly ovate, 4–8 mm long, 4–8 mm wide. Flower solitary at top of peduncle, odorless. Perigone widely bowl-shaped, uniformly bright yellow except for slightly paler central area of adaxial side, Ø 10–21 mm; tube bowl-shaped to almost disk-shaped, Ø 8–12 mm; lobes 5–8, erect to spreading, slightly overlapping each other, broadly ovate, 5–7.5 mm long, 3.5–9 mm wide. Stamens 5–8, inserted at base of perigone tube around base of pistil; anthers subsessile, broadly attached to perigone tube in form of a radial ridge, 3–4.5 mm long, 1–1.5 mm wide, latrorse-introrse. Pistil bright yellow, cylindrical to slightly conical, 5–7 mm long; ovary superior, Ø 1.5–2 mm; style straight, cylindrical, slightly narrower than ovary; stigma circular, as wide as style, Ø 1 mm, with a depression of irregular shape at top. Fruit grayish green, subspherical, 17 mm long, Ø 14 mm, with fleshy pericarp, uniformly covered with short protuberances.

Sourses:

Pham et al. (2021) – Phytotaxa 496 (3): 261–268.

Gallery: