Pavonia cancellata (L.) Cav.
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Authority
Fryxell, Paul A. 1999.
Cavanilles (Malvaceae). Fl. Neotrop. Monogr. 76: 1-284. (Published by NYBG Press) -
Family
Malvaceae
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Scientific Name
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Type
Type. Surinam, cancellatus (holotype, LINN-875.8 as microfiche; isotype, S as microfiche).
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Synonyms
Hibiscus anonimus Mart. ex Colla, Pavonia deltoidea Mart., Pavonia cancellata var. deltoidea (Mart.) A.St.-Hil., Malache deltoides (Mart.) Kuntze, Pavonia modesta Mart., Malache modesta (Mart.) Kuntze, Pavonia cancellata var. modesta (Mart.) Garcke, Pavonia hirta Spreng., Pavonia procumbens (Wight & Arn.) Walp., Pavonia cancellata var. crassivenosa Gürke, Pavonia cancellata f. montana Huber, Pavonia cancellata var. cordata Hassl., Pavonia guanacastensis Standl., Hibiscus cancellatus L., Malache cancellata (L.) Kuntze
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Description
Species Description - Procumbent ("erect" in Harley 19136) perennial herbs, the stems trailing (to 2 m long), hispid, the hairs 1-2 mm long, with dense lines of shorter hairs. Leaf blades mostly 2-3.5 cm long, markedly asymmetrical, deltoid-ovate to angular or hastately lobed, deeply cordate, crenate, acute, the upper surface sometimes with simple hairs 1.5-2 mm long, sometimes with stellate hairs 0.5 mm long, pubescent beneath; petioles ½-1 times the length of the blade; stipules 2-3(-6) mm long, subulate, erect or recurved. Flowers solitary or paired in the leaf axils, the pedicels subequal to or exceeding subtending leaves (1-8 cm long); involu-cellar bracts ca. 15, linear, 10-12(-15) mm long, arcuate, hispid-ciliate, the hairs ca. 2 mm long; calyx 7-8 mm long, hirsute; corolla yellow with dark red center (dark center lacking in Stephens M2), 1.5-2.7 cm long; androecium ca. 8-9 mm long, the staminal column glabrous, pallid; styles slightly exserted from column. Fruits 7-8 mm diam., obovoid, glabrous, the mericarps 4.5 mm long, with an obscure apical beak. Chromosome number, 2n = 56 (Krapovickas & Cristóbal, 1965).
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Discussion
Pavonia cancellata is a variable species, especially in the character of its pubescence. Gürke (1892b: 516) recognized one extreme form, with densely stellate-pubescent foliage, as P. cancellata var. crassivenosa Gürke, but this appears to me simply to be an extreme of a continuous range of variation. The asymmetrical leaves and prostrate habit are characteristic.
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Common Names
Barba-de-bode, barba-de-veado, malva chanana
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Distribution
Widespread in Central America (Nicaragua and Costa Rica) and South America (Venezuela, the Guianas, Brazil, Paraguay, and Bolivia), where it is often found on sandy soils growing in open (sometimes arid) habitats, at elevations of 100-1000 m.
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