Dorstenia petraea C.Wright ex Griseb.

  • Authority

    Berg, Cornelius C. 2001. Moreae, Artocarpeae, and (Moraceae): With introductions to the family and and with additions and corrections to Flora Neotropica Monograph 7. Fl. Neotrop. Monogr. 83: 1-346. (Published by NYBG Press)

  • Family

    Moraceae

  • Scientific Name

    Dorstenia petraea C.Wright ex Griseb.

  • Type

    Type. Cuba. Oriente: San Juan de Buenavista, 24 Nov 1860, Wright 2277 (holotype, GOET; isotypes, B, GH, K, P).

  • Description

    Species Description - Herb, with the stem rhizomatous, 1.5-3 mm thick, puberulous to hirtellous with straight and uncinate hairs; internodes short and long. Leaves in spirals, ± rosulate; lamina (subpeltate, (sub)ovate to elliptic or oblong, sometimes to suborbicular, 1-6.5 × 0.5-3.5 cm, thinly chartaceous; apex obtuse; base (sub)cordate to rounded; margin subentire to ± irregularly and faintly crenate to dentate; upper surface puberulous to hirtellous to subhirsute, smooth to scabrous; lower surface hirtellous with straight hairs; venation pinnate; lateral veins 3-6 pairs; petiole 0.5-9 cm long, puberulous to hirtellous to subhirsute with straight white to brownish hairs; stipules triangular, 0.05-0.15 cm long, uninervate, puberulous. Inflorescences greenish or with at least the margin of the receptacle purplish; peduncle 1-9 cm long, puberulous to hirtellous to subhirsute with straight hairs; receptacle centrally attached, discoid, (sub)orbicular in outline, 0.4-1.2 cm diam., the outside puberulous to hirtellous to subhirsute, the fringe to 1 mm broad, with sparse, minute, (sub)globose hairs; bracts in 1 (or 2) row(s), (sub)marginal, all or most of them radiating, ovate, to 0.6 mm long, longer and shorter ones ± distinctly alternating, puberulous to hirtellous (to subhirsute); staminate flowers peripheral and among the pistillate ones; tepals 2; stamens 2; filaments longer than the perianth; stigmas equal in length, ca. 0.2 mm long, whitish (?). Endocarp body subglobose, ca. 1 mm diam., slightly tuberculate to smooth.

  • Discussion

    Dorstenia petraea is a rather uniform species, apparently very close to D. fawcetti. It mainly differs from the latter in a usually peltate and thinner lamina, which may show transitions to a non-peltate lamina.

  • Distribution

    Confined to eastern Cuba; on steep rocks, along streams, in shaded places; at low elevations.

    Cuba South America| Oriente Cuba South America|