Pavonia rudis Fryxell
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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. Peru. Pasco: Chontabamba Valley, 2-8 km W of Oxapampa, 1800-1850 m, remnants of natural vegetation along roadside, flowers white, 2 Feb 1983, A. H. Gentry; D. Smith, R. Vásquez & León 39916 (holotype, MO; isotype, NY).
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Description
Latin Diagnosis - Suffrutices caulibus pubescentibus, foliis subsessilibus, laminis supra pilis simplicibus vel bifurcatis adpressis, infra pilis stellaris; pedicellis solitariis 3-5 cm longis pilis plus minusve antrorsis; involucellis basaliter gamophyllis, distaliter 8-9 partibus anguste linearibus; corollis albis; meri-carpiis laevibus, spinis tribus erectis 5-6 mm longis.
Species Description - Subshrubs 1 m tall (?), the stems densely pubescent with a mixture of stellate and simple hairs hairs 0.5-1 mm long. Leaf blades 4-8 x 2-3.5 cm, lance elliptic, basally cuneate (somewhat asymmetrically so), serrate, acute, penninerved (3-nerved from the base, but the 2 lateral nerves reduced), the upper surface with appressed mostly simple but sometimes bifurcate hairs 0.4-0.8 mm long, the hairs on the principal nerves denser and slightly longer, the lower surface with stellate hairs 0.5-1 mm long, the principal nerves more densely pubescent; petioles 2-5 mm long, the leaves often subsessile, densely pubescent, the hairs 1 mm long; stipules subulate, erect, 3-4 mm long, pubescent. Flowers solitary (or paired) in the leaf axils, the pedicels 3-5 cm long, densely pubescent, the hairs stellate, bifurcate, or simple, variable in size, the largest to 1 mm long, more or less antrorse; involucel ca. 8 mm long, cupuliform (i.e., gamophyllous in basal half), the 7-9 bractlets narrowly linear, separated by rounded sinuses, hirsute; calyx 5-6 mm long, ciliate, about half-divided; corolla 1 cm long, white. Fruits 6-7 mm diam.; mericarp body 7 mm tall, smooth, with minute glandular hairs apically, with 3 erect spines 5-6 mm long (the central spine the longest), retrorsely barbed, the lateral spines 2.5-3 mm apart at the base.
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Discussion
Pavonia rudis is clearly allied to P. pseudo-typhalea from Colombia and perhaps also to P. intermedia. It can be distinguished from these by the characters given in the key.
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Distribution
Known only from Peru in the provinces of Pasco and Junín. The type was collected at ca. 1800 m elevation. The type locality is at 10°3l'S, 75°30'W.
Peru South America| Junín Peru South America|