Pavonia rosa-campestris A.St.-Hil.

  • Authority

    Fryxell, Paul A. 1999. Cavanilles (Malvaceae). Fl. Neotrop. Monogr. 76: 1-284. (Published by NYBG Press)

  • Family

    Malvaceae

  • Scientific Name

    Pavonia rosa-campestris A.St.-Hil.

  • Type

    Type. Brazil. Minas Gerais: Minas Novas, near São João, St.-Hilaire 1259 (holotype, P as photo CTES; isotype fragments, CTES, F).

  • Synonyms

    Pavonia rosa-campestris var. tomentosa-velutina Hochr., Pavonia rosa-campestris var. tomentella R.E.Fr., Malache rosa-campestris (A.St.-Hil.) Kuntze

  • Description

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    Species Description - Subshrubs or decumbent herbs 0.5-1 (-2) m tall, with a deep spreading perennial root system, the stems pilose (hairs 2-4 mm long) or rarely glabrous. Leaf blades broadly ovate to subrotund (rarely narrower), deeply cordate, crenate-serrate, acute or acuminate, ciliate on margin, with minute stellate hairs to subglabrous on both surfaces or sometimes the upper surface with appressed simple hairs 1-2 mm long; mostly 2.5-4 x 2.5-5 cm; petioles 1.5-3 cm long; stipules subulate, 2 mm long. Flowers solitary in the leaf axils, the pedicels 0.5-1.5 cm long, slender; involucellar bracts 10-12, linear-lanceolate, 12-16 x 1.5-2 mm, externally glandular-puberulent, internally hirsute; calyx 4 mm long, glandular-puberulent, mostly concealed by involucel; corolla red, 1.5-2.5 cm long, glabrous throughout, the claw scarcely discernible; staminal column 5 mm long, glabrous, the filaments 2 mm long; styles exserted from column. Fruits 1 cm diam., stellate-pubescent, the mericarps 10 mm high, keeled and coarsely rugose, apically pointed.

  • Discussion

    Pavonia rosa-campestris is characterized by its red corolla, the petals virtually lacking claws, and its small calyx. Plant pubescence is quite variable.

    Gottsberger (1972) describes this species as autogamous. Despite its bright red corolla, in observation for several days it was not observed to be visited by pollinators (neither hummingbirds, butterflies, nor bees), presumably because the overlapping bases of the petals denied access to the floral nectaries. Selfpollination resulted in normal fruit set.

  • Distribution

    From Brazil, known from the states of Bahia, Goiás, Mato Grosso, Minas Gerais, Rondônia, and from the Distrito Federal, mostly in cerrado vegetation at 200-1200 m elevation. TWo collections are known from Bolivia. The type locality (São João = Itamarandiba) is at 17°52'S, 42°51'W.

    Brazil South America| Bahia Brazil South America| Distrito Federal Brazil South America| Goiás Brazil South America| Mato Grosso Brazil South America| Minas Gerais Brazil South America| Rondônia Brazil South America| Bolivia South America| Santa Cruz Bolivia South America|