Flora of the Hawaiian Islands
Dicotyledon Literature for Portulaca villosa
Wagner et al., 1990, 1999.
   Portulaceae Bibliography
      Portulaca villosa

Common name(s): purslane, `ihi
General Information
DistributionIn the Hawaiian Islands, endemic to Nihoa, O`ahu, Moloka`i, Lana`i, Maui, Kaho`olawe, Hawai`i.

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Perennial herbs from a fleshy, tuberous, but becoming woody taproot; stems prostrate to weakly ascending, up to ca. 3 dm long.
Leaves pale grayish green, narrowly oblanceolate to linear, subterete, 5-25 mm long, 1.5-3 mm wide, sessile, with a dense tuft of yellowish brown hairs (1-)3-12 mm long in the axil.
Flowers usually 3-6 in dense, terminal, head-like cymes subtended by dense tufts of hairs 6-12 mm long and a series of involucrate leaves, bracteoles ca. 1.4-1.5 mm long; sepals 4-5 mm long, margins scarious; petals white, pink, or pink with a white base, obovate, 8-10 mm long, apex emarginate; stamens 18-50; style 5-7(8)-branched.
Capsules broadly ovoid, 3-5 mm long, the walls thin, ca. 0.05 mm thick, circumscissile near base up to 1/3 from base.
Seeds dark reddish brown, 0.6-0.7 mm long, the surface stellulate-rugulose.