Boehmeria clidemioides var. diffusa, (Wedd.) Hand. - Mazz.
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publication ID |
https://doi.org/10.3767/000651913X674116 |
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persistent identifier |
https://treatment.plazi.org/id/03D987B7-FFE6-513F-FFBA-5850DC27FD18 |
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treatment provided by |
Felipe |
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scientific name |
Boehmeria clidemioides var. diffusa |
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b. var. diffusa (Wedd.) Hand.-Mazz. View in CoL — Fig. 7f–k View Fig ; Map 9 View Map 9
Boehmeria clidemioides Miq.var. diffusa (Wedd.) Hand.-Mazz.(1929) 152.― Boehmeria diffusa Wedd.(1856) 356. ― Boehmeria comosa Wedd.(1869) 205, nom. superfl. illeg., based on Boehmeria diffusa Wedd. ― Type: J.D. Hooker s.n. in Herb. Hooker & Thomson (lecto K, selected here), eastern Nepal, Jambing River, 3000 ft. – See Note 1.
Boehmeria maugereti H.Lév. & Vaniot in Léveillé (1907) 144. ― Syntypes: Bodinier 1715 (E), China, Guizhou, Mont du Collège , July 1897; L. Martin 1715 (P, n.v.), China, Gan-pin, 20 Aug. 1897 .
Boehmeria thorelii Gagnep. (1928) 127. ― Type: Thorel 2379 (holo P), Laos.
Herb, laxly branched, often prostrate and ascending up to 1.5 m, rooting at nodes; lateral branches often branched, 5–15 cm long with clusters, especially female, often so crowded as to be almost contiguous, some subtended by leaves. Leaves mostly alternate (sometimes some lower ones opposite), ovate to elliptic-ovate, (3–)4–8(–16) by (1.5–)2–3(–6.5) cm, length (1.75–) 2–3.5(–4) × width; marginal teeth 7–20(–30) either side, relatively narrow, 1–4 by 1.5–4 mm, width 0.75–1.5(–3) × length; leaf apex as in typical variety; base usually short-cuneate. Stigma 1.5–2 mm long, extremely slender. Fruiting perianth up to c. 1 mm long, with length usually c. 2 × width, often scarcely flattened and with marginal rim rather than wing. Achene usually tuberculate.
Distribution ― Widespread from eastern Himalayas (north-eastern India, Nepal) to Burma, Thailand, China.
Habitat & Ecology ― Forest margins, thickets, open sunny slopes and dry disturbed areas; 200–2400 m altitude.
Conservation status ― See under the species.
Notes ― 1. When Weddell (1856) created his three varieties under B. diffusa ( var. hirta Wedd. 1856: 356 , var. strigosa Wedd. 1856: 357 and var. canescens Wedd. 1856: 357 ), he also created the autonym var. diffusa , which was transferred to B. clidemioides by Handel-Mazzetti (1929). We are not sure which of the preserved material of B. diffusa Weddell considered to represent the typical variety, and we have seen no material annotated by Weddell with varietal names; we have therefore decided to list the varietal names other than var. diffusa under names of uncertain identity, rather than sinking them into synonymy of var. diffusa . We have seen six collections which we believe are syntypes of B. diffusa : J.D. Hooker s.n. (K), India, Khasia; J.D. Hooker s.n. (K), Sikkim; J.D. Hooker s.n. (K), Nepal; Griffith s.n. (K), Mishmi; MacClelland s.n. (K), Pegu and Rangoon; J.D. Hooker s.n. in Herb. Hooker & Thomson (K), eastern Nepal, Jambing River, 3000 ft. For taxonomic precision we have chosen the latter collection as lectotype.
2. Variation is discussed fully under the species as a whole; leaves are mostly alternate and generally smaller and narrower than in typical variety, often less than 6 cm, rarely over 8 cm long, with teeth fairly large and relatively narrow; lateral branches longer and more lax with scattered leaves; stigma 1.5–2 mm long, mostly longer than in typical variety.
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