Waltheria indica
basora-prieta, hierba del soldado, malva, malva blanca, malva del monte, sleepy morning, uhaloa
to 8 mm wide, nodes even or extended to 0.5 mm.
stipules linear-triangular, 3–6 mm;
petiole 2.5–5 cm × 1–4 mm;
blade concolor or discolor, drying olive, ovate-oblong to lanceolate, to 7(–10) × 5 cm, base subcordate to obtuse, margins crenate-serrate, serrate, irregularly serrate, or crenate-dentate, apex narrowly rounded, obtuse, or subacute, surfaces tomentose or pubescent, trichome rays 0.4–1 mm, and sparsely hispidulous, slightly scabrous or not.
subsessile, or on short pedunclelike lateral branches to 3.6 cm, glomerules 5–20 along stems, compact, often dense, sympodial, at times lax clusters with terminal flower and subtending dichasia;
bracteoles free or with 1 adherent to stipule forming an elliptic 2-cuspidate foliole at glomerule base, bracts subequal, lanceolate or linear, 0.3–1.5 mm wide, apex acute, entire.
sessile or subsessile;
calyx 4.2–setose apically;
styles 0.9–1.7 × 0.1–0.3 mm, lateral or excentric, broader and stellate-hirsute distal to base;
stigmas 12-branched, plumose (1.2–1.4 × 0.5–0.8 mm, column 0.9–1.2 mm, branches to 0.7 mm) or dissolute-penicillate (0.6–1.2 × 0.7–1.6 mm, column 0.4–0.7 mm, branches to 1.1 mm).
oblique, obconic, or obovoid, 2.1–3 × 1.5–2 mm, walls with endocarp corneous for 1+ mm from apex, sometimes merely membranous along one or both valve margins laterally; partially apically dehiscent to 2-valvate.
dark brown, obovoid or obconic, 2–2.2 × 1.2–1.5 × 1–1.3 mm, smooth.
= 24, 26 (India), 40 (Africa).
Waltheria indica
Robert Brown (in J. H. Tuckey 1818) was the first to unequivocally synonymize the names Waltheria americana and W. indica published by Linnaeus in the same work. Brown adopted the name W. indica for the combined species and thus gave priority to that name.
Waltheria indica in the narrow sense is globally in need of revision, being very complex and problematic. Heterostyly has been reported for some populations of W. indica in India (B. Bahadur et al. 1996). Flora area populations have the pistil subequal (0.2–0.5 mm longer) and more or less homostylous, or up to 1 mm longer than stamens, more like monomorphic pin floral morphology. Multiple introductions are apparent from the variability seen within the flora area. Apparent hybrids of W. indica with other species are found in Arizona, Florida, and Texas.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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