Ying T.S. et al., The endemic genera of seed plants of China, Fig. 103 (1993), with permission.
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 (incl. publication and synonyms): See Skog, L.E. & J.K. Boggan. 2005: World checklist of Gesneriaceae: http://persoon.si.edu/Gesneriaceae/Checklist.
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.
Bibliography: See Skog, L.E. & J.K. Boggan. 2005. Bibliography of the Gesneriaceae. 2nd edition: http://persoon.si.edu/Gesneriaceae/Bibliography.
Illustrations:
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Ancylostemon concavus Craib, type species
Ying T.S. et al., The endemic genera of seed plants of China, Fig. 103 (1993), with permission. |
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Ancylostemon aureus (Franch.) B.L.Burtt var. aureus Li Z.Y & Wang Y.Z., Plants of Gesneriaceae in China , Fig. 1.41 (2004); with permission. |
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Ancylostemon mairei var. emeiensis K.Y. Pan Li Z.Y & Wang Y.Z., Plants of Gesneriaceae in China, Fig. 140 (2004); with permission. |
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Ancylostemon saxatilis (Hemsl.) Craib Li Z.Y & Wang Y.Z., Plants of Gesneriaceae in China, Fig. 1.43 (2004); with permission. |
last modified: 2007-06-12