[Ancylostemon]
Important notes
The genus Ancylostemon is presently not accepted. It has been included in Oreocharis by Möller et al., Phytotaxa 23: 1-36 (2011).
The names of the species mentioned and/or illustrated in the below treatment now read: Oreocharis concava (Craib) Mich.Möller & A.Weber, O. wangwentsaii var. emeiensis (K.Y.Pan) Mich.Möller & A.Weber (new name for Ancylostemon mairei (H.Lév.) Craib var. emeiensis K.Y.Pan).
Ancylostemon (in its traditional sense)
Ancylostemon concavus Craib, type species
T.S.Ying et al. (1993), The endemic genera of seed plants of China, Fig. 103; with permission
Ancylostemon mairei var. emeiensis K.Y.Pan
Z.Y.Li & Y.Z.Wang (2004), Plants of Gesneriaceae in China, Fig. 140; with permission
Ancylostemon (in its traditional sense)
Full name and orig. publication: Ancylostemon Craib, Notes Roy. Bot. Gard. Edinburgh 11: 233, 257 (Nov. 1919).
Etymology: From the Greek άγκύλη, ankylē = bend, crook, and σήμων, stēmōn = thread, filament, alluding to the bend at top of the filaments.
Infrafamilial position: Didymocarpoid Gesneriaceae - "Advanced Asiatic and Malesian genera" (Weber 2004).
Description: Perennial, acaulescent rosette herbs. Leaves with long, pubescent petiole, lamina ovate, elliptic, elliptic-ovate or lanceolate, coarsely dentate, crenate or serrulate, pubescent on both surfaces. Cymes umbelliform, sometimes reduced to solitary flowers; bracteoles linear, villose. Sepals free to base or fused to about half, puberulous outside, lobes linear-lanceolate or triangular. Corolla tubular, purple, reddish-orange or yellow-whitish, bilabiate; upper lip 2-lobed or undivided, lower lip 3- or rarely 5-lobed. Stamens 4, didynamous, glabrous; filaments inserted at or above middle of corolla tube; anthers coherent. Nectary annular. Ovary cylindrical, glabrous or puberulous; style linear; stigma bifid. Capsule slender cylindrical, glabrous, dehiscence loculicidal.
Chromosome number: 2n = 34.
Species number: 12.
Species names (only given in case of few species).
Type species: Ancylostemon concavus Craib
Distribution: C & S China (Hubei, Sichuan, Guizhou, Yunnan, Guangxi, Shanxi).
Ecology: Occurring in forests and forest margins, in wet places and on rocks within forests; 1100-3800 m.
Selected references: Burtt & Davidson, Notes Roy. Bot. Gard. Edinburgh 21: 215-216 (1954); W.T.Wang et al. in Wu & Raven (eds.), Fl. China 18: 268-272 (1998), reg. rev.; Y.Z.Wang & Gu, Acta Phytotax. Sin. 37: 137-142 (1999), karyol.
Tax. details, cytology, and bibliography: Gesneriaceae Resource Centre (GRC). Royal Botanic Garden Edinburgh.
Page content and update responsibility/contact: Anton Weber.
Because of the synonymisation of Ancylostemon, the page is no longer updated.