Wissadula
wissadula
usually erect, hairy [glabrate], not viscid.
distalmost sometimes subsessile;
stipules usually persistent, filiform, subulate, or minute;
blade broadly ovate to ovate-triangular [narrowly triangular], unlobed, base cordate, margins entire [crenate-dentate], surfaces usually stellate-hairy [sometimes glabrate].
terminal panicles or racemes;
involucel absent.
calyx not accrescent, not inflated, shorter than mature fruits, lobes not ribbed, triangular;
corolla usually yellowish, sometimes white, rotate;
staminal column exserted;
style 3–6-branched;
stigmas capitate.
schizocarps, erect, not inflated, obovoid, not indurate;
mericarps 3–6, 2-celled, apex bulbous-apiculate, proximal cell indehiscent, distal cell dehiscent.
(1–)3 per mericarp, lower cell 1-seeded, upper cell usually 2-seeded, hairy, proximal seed relatively more densely hairy.
= 7.
Wissadula
Species 25 (3 in the flora).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Leaf blades 2.5–3.5 cm, apex acute to subobtuse; stipules minute; petals yellow, fading to orange. | W. parvifolia |
1. Leaf blades 4–11 cm, apex acute or acuminate; stipules 4–12 mm; petals usually yellowish or white, sometimes with dark red basal spot | → 2 |
2. Leaf blades broadly ovate, base deeply cordate (except uppermost), margins curved; petals yellowish; stipules 7–12 mm. | W. hernandioides |
2. Leaf blades ovate-triangular, base shallowly cordate, margins straight; petals yellowish or white, sometimes with dark red basal spot; stipules 4–5 mm. | W. periplocifolia |
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USDA Plants Database
