Boehmeria clidemioides var. umbrosa, Hand. - Mazz.

Wilmot-Dear, C. M. & Friis, I., 2013, The Old World species of Boehmeria (Urticaceae, tribus Boehmerieae). A taxonomic revision, Blumea 58 (2), pp. 85-216 : 117-119

c. var. umbrosa Hand.-Mazz. — Fig. 7l ; Map 8

Boehmeria clidemioides Miq. var. umbrosa Hand.-Mazz. (1929) 152. ― Boehmeria umbrosa (Hand.-Mazz.) W.T. Wang (1981a) 324. ― Syntypes: Handel­Mazzetti 9340 (not traced), China, north-western Yunnan, Taran, 5 July 1916; Maire s.n. (W), China, Dschenfung-schan; Wilson in Veich Exped. 5157 (K), China, Mt Omei.

Boehmeria bicuspis C.J.Chen in W.T.Wang & C.J.Chen (1979) 109. ― Type: T.S. Ying & D.Y. Hong 575 (holo PE), China, Tibet, I-Kung, 15 July 1965.

Boehmeria pseudotricuspis W.T. Wang (1981a) 324. ― Type: C.W. Wang 85419 (holo KH, not traced; iso PE), China, Yunnan, Xichou, 7 Dec . 1939.

Perennial herb, unbranched or few-branched, up to c. 1 m tall. Leaves all or mostly alternate, often almost orbicular apart from long terminal tooth, medium, (5–) 7–15 cm long, length 1.1–1.5 × width; marginal teeth few, 5–10(–15), relatively narrow, near leaf base 3 –5 mm long and wide, gradually markedly longer towards leaf apex, those near apex 10 –25 mm long, length 1.5–5 × width; either apex irregularly deeply bilobed, deeply trilobed or deeply laciniate with a long apical tooth terminating one lobe or inserted between two lobes, or apex truncate, with several almost equal long apical teeth 0.3–1.5 × lamina length; base short-cuneate. Inflorescence-bearing axes usually unbranched, clusters well-spaced. Stigma 1.5–2 mm long. Fruiting perianth up to c. 1 mm long, with length usually c. 2 × width.

Distribution ― Scattered distribution in southern China. Habitat & Ecology ― Forest, mostly shady moist places and near streams; 1100–2600 m altitude.

Note ― This variety can be confused with B. japonica (see discussion under the species as a whole). A range of intermediates with the typical variety exists (discussed above under the species), sometimes with leaves of various forms on one plant.

Figures

Map 8 Distribution of Boehmeria clidemioides Miq. var. clidemioides (●) and B. clidemioides Miq. var. umbrosa Hand.-Mazz. (ä).

Fig. 7 a–e: Boehmeria clidemioides Miq. var. clidemioides. a. Part of stem showing pair of partly-leafless inflorescence-bearing axes with flower-clusters (inflorescences); b, c. leaves; d. stipule; e. flattened winged fruiting perianth. — f–k: Boehmeria clidemioides var. diffusa (Wedd.) Handel-Mazzetti. f. Habit of stem showing axillary, partly-leafless inflorescence-bearing axes with flower-clusters (inflorescences); g. leaf; h. part of male inflorescence-bearing axis with two flower-clusters (inflorescences); i. male flower; j. part of female inflorescence-bearing axis with two flower-clusters (inflorescences); k. unwinged fruiting perianth. — l: Boehmeria clidemioides var. umbrosa Hand.-Mazz. Leaf (a: Henry 12795; b, d: Hancock 375; c: Faber 431; e, h, i: Ferguson s.n; g, k: Henry 2924; j: Forrest 15885; h: Wilson 5157; all K). — Scale bars: a–c, g, l = 1 cm; d, h, j = 2 mm; e, i, k = 1 mm; f = 2 cm.