Boehmeria virgata var. maxima, 2013
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publication ID |
https://doi.org/10.3767/000651913X674116 |
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persistent identifier |
https://treatment.plazi.org/id/03D987B7-FF8E-5157-FD70-5AF2DC32F78D |
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treatment provided by |
Felipe |
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scientific name |
Boehmeria virgata var. maxima |
| status |
var. nov. |
c. var. maxima Friis & Wilmot-Dear View in CoL , var. nov. — Fig. 22f–i View Fig ; Map 22 View Map 22
A var. virgata foliis maioribus relative latioribus 24–35 × 15–20 cm (nec 5–22 × 3–12 cm) distinguenda. — Type: Mahyar 436 (holo K; iso A, BISH, BO, L, MAN, NSW), Indonesia, Indonesian Papua [Irian Jaya], Arfak Mts , Mupi Valley System .
Shrub, to c. 2 m. Stem, at least when young with dense but fine rather inconspicuous half-adpressed to close-adpressed pale straight hairs up to 0.5 mm long. Stipules 11–15 by 3 mm, with hairs dense, adpressed, finer than on stem. Leaves broadly ovate to elliptic, 24–35 by (11–) 15–20 cm with length 1.5– 1.75(–2) × width; marginal teeth 40–60 either side, shallow but very broad, usually rounded, 1.5–3 by (5–) 8–12 mm; leaf apex attenuate-acuminate; base narrowly rounded or subcordate; upper lateral veins on at least one side (3–)4–5, lateral and tertiary venation fine and rather inconspicuous; texture thin-chartaceous but sometimes slightly bullate; both surfaces with hairs fine, inconspicuous, pale, much shorter than on stem (≤ 0.2 mm long), abundant and adpressed adaxially, sparse and spreading below; petiole long relative to lamina 0.4–0.6 × lamina length. Inflorescence-bearing axes unbranched, 12–20 cm. Male flowers sparsely hairy. Fruiting perianth broadly ovoid to obovoid, 1–1.5 by 0.5–1.3 mm, much-flattened laterally into broad thin-textured wing, central thickened portion sometimes spherical and minute.
Distribution ― Endemic to Indonesia (Papua).
Habitat & Ecology ― Disturbed forest or amongst shrubs along riverbanks; 550–650 m altitude.
Note ― This variety, sympatric with var. virgata in New Guinea, is distinctive in its leaves extremely large, thin-textured with numerous large long marginal teeth.A formal conservation status assessment is not meaningful. Only three collections have been seen, all from the same region (Bird’s Head Peninsula) but habitats in this region appear not to be undergoing serious deterioration and we do not consider it currently at risk. See detailed discussion in Note 4-ii under the species.
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