Monographs Details: Pavonia nayarensis Fryxell
Authority: Fryxell, Paul A. 1999. Cavanilles (Malvaceae). Fl. Neotrop. Monogr. 76: 1-284. (Published by NYBG Press)
Family:Malvaceae
Description:Latin Diagnosis - Frútices 1-3 m alti, caulibus heterotrichis pilis stellaris adpressis; laminis foliorum anguste lanceolatis; flores plerumque in racemis terminalibus aphyllis; bracteolis involucellum 8-10, quam calycis brevioribus; calycibus floriferis 6-7 mm longis fructiferis 10 mm usque; corollis 1.2-2 cm longis atrorubris erectis tubum formantibus; androeciis corollam subaequantibus; fructibus oblatis 1 cm diametro glabris plus minusve verruculosis leniter costatis.

Species Description - Shrubs 1-3 m tall, the stems with appressed stellate hairs of different size classes, the largest ca. 1 mm diam. Leaf blades narrowly lanceolate, 3-11 x 1.5-4.5 cm (2.5-5 times as long as wide), basally truncate or subcordate, crenate-serrate, acuminate, palmately 5-nerved, discolorous, stellate-pubescent on both surfaces; petioles 0.5-4 cm long (progressively shorter upward), densely and evenly pubescent like stem; stipules subulate, 2-3 mm long, caducous. The lowermost flowers occasionally axillary but mostly borne in terminal leafless racemes; pedicels 3-4 cm long basally to 0.5 cm long distally, with minute stellate pubescence; involucellar bracts 8-10, basally connate (forming a broad disc in fruit), linear-lanceolate, ca. 1 mm wide, shorter than calyx, stellate-pubescent; calyx 6-7 mm long in flower to 10 mm long in fruit, costate, stellate-pubescent; corolla 1.2-2 cm long, dark red, tubular (the petals erect), externally pubescent, internally glabrous; staminal column glabrous, subequal to corolla or slightly exserted, the filaments 1-2 mm long, the pollen yellow-orange; styles slightly exserted, dark red or purplish, connate nearly to apex, the stigmas subsessile. Fruits oblate, 1 cm diam., 7 mm high, glabrous, weakly ribbed or unribbed, more or less verruculose.

Discussion:The specimens cited were predominantly flowering in Sept and beginning to mature fruits in Oct.

Pavonia nayarensis is notable for its narrowly lanceolate leaf blades with truncate bases and for its verruculate fruits.

Distribution and Ecology: Pavonia nayarensis is nearly confined to the Municipio de Nayar (hence the choice of specific epithet) in the state of Nayarit, Mexico, except for a single collection from farther east in the state of Jalisco. Most of the collection sites are within the geographic bounds of 22°11-16'N, 104°33-45'W, with the exception noted from ca. 103°55'W. It occurs in the ecotone between oak forest and deciduous forest, at elevations of 970-1960 m. The type locality is at 22°15'N, 104°40'W.

Distribution:Mexico North America| Nayarit Mexico North America| Jalisco Mexico North America|