Wissadula

Medikus

Malvenfam., 24. 1787.

Etymology: Presumably Sinhalese wissa, poison, and duvili, dust or powder common name wissaduli used for plants of Centipeda minima (Linnaeus) A. Braun & Ascherson and misapplied here
Treatment appears in FNA Volume 6. Treatment on page 374. Mentioned on page 216.
 TaxonIllustrator 
FNA6 P43 Wissadula periplocifolia.jpegWissadula periplocifolia
Amoreuxia wrightii
Amoreuxia palmatifida
Dirca palustris
Linny Heagy
Linny Heagy
Linny Heagy
Linny Heagy

Subshrubs [perennial herbs]. Stems usually erect, hairy [glabrate], not viscid. Leaves 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]. Inflorescences terminal panicles or racemes; involucel absent. Flowers: 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. Fruits schizocarps, erect, not inflated, obovoid, not indurate; mericarps 3–6, 2-celled, apex bulbous-apiculate, proximal cell indehiscent, distal cell dehiscent. Seeds (1–) 3 per mericarp, lower cell 1-seeded, upper cell usually 2-seeded, hairy, proximal seed relatively more densely hairy. x = 7.

Distribution

sc United States, Mexico, West Indies, South America, s Asia, Africa

Discussion

Species 25 (3 in the flora).

Key

1 Leaf blades 2.5–3.5 cm, apex acute to subobtuse; stipules minute; petals yellow, fading to orange. Wissadula 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. Wissadula 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. Wissadula periplocifolia
... more about "Wissadula"
bulbous-apiculate +
Paul A. Fryxell† +  and Steven R. Hill +
Medikus +
cordate +
asymmetric +  and symmetric +
unlobed +, broadly ovate +  and ovate-triangular +
not inflated +
not accrescent +
indehiscent +  and loculicidal +
white +  and yellowish +
sc United States +, Mexico +, West Indies +, South America +, s Asia +  and Africa +
sparse;copious +
Presumably Sinhalese wissa, poison, and duvili, dust or powder +  and common name wissaduli used for plants of Centipeda minima (Linnaeus) A. Braun & Ascherson and misapplied here +
pistillate +  and staminate +
unisexual +  and bisexual +
obovoid +  and not inflated +
axillary +  and terminal +
tough-fibrous +
connate +  and distinct +
distichous +  and alternate +
distalmost +
triangular +
wedge--shaped +
3-40-carpellate +
(1-)2-many +
adnate +  and distinct +
Malvenfam., +
fries1908a +
hairy +  and glabrous +
reniform +
persistent +
sessile +  and subsessile +
not viscid +
filiform +, linear +  and capitate +
1-2 times number of carpels +
subulate +  and filiform +
3-6-branched +
stellate-hairy +
Mallow +
Wissadula +
Malvaceae subfam. Malvoideae +
monoecious +, dioecious +  and hermaphroditic +