Pavonia hieronymi Gürke

  • Authority

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

  • Family

    Malvaceae

  • Scientific Name

    Pavonia hieronymi Gürke

  • Type

    Type. Argentina. Salta: Near San José, Hieronymus & Lorentz 237 (holotype, B, destroyed, as photo F-9449; isotypes, CTES, US).

  • Synonyms

    Pavonia morongii S.Moore, Asterochlaena morongii (S.Moore) Hassl., Pavonia sidifolia f. morongii (S.Moore) Hassl., Pavonia geminiflora var. grandiflora Chodat & Hassl., Asterochlaena hieronymi var. grandiflora (Chodat & Hassl.) Hassl., Asterochlaena hieronymi f. angustiphylla Hassl., Asterochlaena morongii subf. viscosissima Hassl., Asterochlaena hieronymi var. pseudoapiculata Hassl., Pavonia hieronymi subsp. tomentella R.E.Fr., Asterochlaena hieronymi (Gürke) Hassl., Asterochlaena hieronymi subsp. brevipila Hassl.

  • Description

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    Species Description - Suberect to trailing or Subscandent subshrubs to 1-2 m tall, the stems glandular-pubescent, sometimes also sparsely setose. Leaf blades ovate (to triangular in distal leaves, rarely subhastate; Woolston 1150), mostly 2-7 x 1.5-6 cm, cordate, crenate-serrate, acute or acuminate, discolorous, sparsely to densely soft-puberulent, with scattered 3-armed spicules beneath or these absent; petioles 1-4.5 cm long; stipules subulate, 2-3 mm long. Flowers solitary in the leaf axils, the pedicels 1-5 cm long, slender; involucellar bracts 6-8, lanceolate, 6-10 x 0.5-2 mm, puberulent, sometimes viscid; calyx 4-5 mm long, pubescent; corolla 1.5-2.5 cm long, yellow with a dark red center, densely wooly on margins of claw; staminal column ca. 5 mm long, purplish, the filaments 1 mm long. Fruits oblate, 6 mm diam., 4.7 mm high, often retrorsely scabridulous on central ridge, otherwise obscurely pubescent to subglabrous, more or less reticulate-veined, with vestigial subapical protruber-ance, or this suppressed.

  • Discussion

    Illustration. Gürke (1892b: pl. 97, fig. 3).

    Some would distinguish Pavonia morongii (with stellate stem pubescence) from P. hieronymi (with glandular stem pubescence), but the distinction does not appear to be absolute, and there is considerable geographic overlap in the two character expressions. I have been unable to find any reliable supporting characters, so I do not maintain the distinction.

    Distribution and Ecology: From Peru, Brazil, Bolivia, Paraguay, and Argentina, at 100-2800 m elevation, growing in shrublands and forest margins, sometimes in flooded areas. The type locality is approximately at 25°S, 66°W; that of Asterchlaena hieronymi var. montana is at 22°17'S, 57°33'W; that of A. hieronymi var. pseudoapiculata is at 20°45'S, 57°55'W; that of Pavonia hieronymi subsp, tomentella is at 27°20'S, 58°57'W.

  • Distribution

    Peru South America| Amazonas Peru South America| Cajamarca Peru South America| Brazil South America| Mato Grosso Brazil South America| Bolivia South America| Beni Bolivia South America| Cochabamba Bolivia South America| Potosí Bolivia South America| Santa Cruz Bolivia South America| Tarija Bolivia South America| Paraguay South America| Alto Paraguay Paraguay South America| Boquerón Paraguay South America| Central Paraguay South America| Cordillera Paraguay South America| San Pedro Paraguay South America| Presidente Hayes Paraguay South America| Argentina South America| Catamarca Argentina South America| Chaco Argentina South America| Corrientes Argentina South America| Formosa Argentina South America| Jujuy Argentina South America| La Rioja Argentina South America| Salta Argentina South America| Tucuman Argentina South America|