Monographs Details: Pavonia pabstii Krapov. & Cristóbal
Authority: Fryxell, Paul A. 1999. Cavanilles (Malvaceae). Fl. Neotrop. Monogr. 76: 1-284. (Published by NYBG Press)
Family:Malvaceae
Description:Species Description - Shrubs 1-1.5 m tall, the stems minutely glandular-pubescent and with scattered whitish setae 1 mm long. Leaf blades ovate, basally cordate, coarsely but shallowly crenate, acute, palmately 5-7-nerved, 2.5-4 x 2-3 cm, markedly discolorous, obscurely and minutely pubescent on upper surface, densely whitish-puberulent on lower surface and with scattered setae on principal veins; petioles to 3.5 cm long (subequal to blades), with pubescence like stem but setae primarily at distal end; stipules subulate, 3 mm long. Flowers solitary in the leaf axils, the pedicels 1.5-2 cm long (shorter than subtending petiole), with pubescence like stem, the setae denser distally; involucellar bracts 5, lance-ovate, 7-10 x 2.5-6 mm, glandular-pubescent and marginally ciliate; calyx 8-9 mm long, glandular-pubescent and ciliate; petals white, 1 cm long, pubescent on margins of claw; staminal column 6-7 mm tall, glabrous, pallid, distally antheriferous, the filaments 2-3 mm long; styles emergent from the column. Fruits unknown.

Discussion:Illustration. Krapovickas & Cristóbal (1993: fig. 2). Krapovickas and Cristóbal (1993) ally Pavonia pabstii to P lanata and P kleinii of P. subsect. Hastifoliae. I believe it is more likely allied to the other species of P. subsect. Exsertae, despite its not having exserted genitalia.

It is distinctive for its white corollas, broad involucellar bracts, and setose stems. The Jorgensen collection cited above is included only tentatively but may represent this species.
Distribution:Argentina South America| Formosa Argentina South America|