Sida cordifolia |
Sida longipes |
|
---|---|---|
bala, country mallow, flannel weed, great-leaf sida, heart-leaf sida, ilima |
long-stalk sida, stockflower fanpetals |
|
Habit | Subshrubs or shrubs, to 1.5 m. | Herbs or subshrubs, perennial, to 0.5 m. |
Stems | erect, stellate-tomentose. |
ascending to erect, with stellate 0.1 mm hairs and glandular hairs. |
Leaves | stipules free from petiole, 1-veined, linear, 5–8 mm, shorter than petiole; petiole 10–25 mm, to 1/2 length of blade, stellate-tomentose; blade broadly cordate to ovate-lanceolate, to 6 cm, reduced distally, 1–2 times longer than wide, base cordate, margins dentate to base, apex acute, surfaces softly velvety-tomentose. |
stipules free from petiole, 1-veined, subulate, 3–4 mm, 1/2–1 times length of petiole; petiole 6.3–40 mm, 1/4–1/2 length of blade, minutely stellate-hairy; blade narrowly linear, 2.5–8 cm, 6–20 times longer than wide, base truncate, margins dentate to base, apex subacute, surfaces stellate-hairy. |
Inflorescences | axillary, usually subsessile, crowded panicles or corymbs, sometimes solitary flowers. |
axillary solitary flowers. |
Pedicels | 0.2–0.4 cm, enlarging slightly in fruit, shorter than calyx. |
slender, 8–12(–16) cm, usually 2+ times length of subtending leaves, much longer than calyx. |
Flowers | calyx prominently ribbed, 6–7 mm, densely stellate-tomentose, lobes ovate; petals yellow-orange, often with darker reddish base, 8–11 mm; staminal column hairy; style 8–14-branched. |
calyx obscurely 10-ribbed basally, 6–8 mm, stellate-hairy, lobes triangular; petals pale orange, 12 mm; staminal column minutely hairy; style 8–10-branched. |
Schizocarps | oblate-conic, 6–7 mm diam., apically hairy; mericarps 8–14, 4–5 mm, dorsally smooth, apex spined, spines to 2 mm, retrorsely barbed (variably developed, rarely suppressed). |
subconic, 5–7 mm diam., minutely glandular-puberulent to subglabrous; mericarps 8–10, 3.5 mm, strongly reticulate laterally, apex muticous. |
2n | = 28. |
|
Sida cordifolia |
Sida longipes |
|
Phenology | Flowering year-round. | Flowering spring–fall. |
Habitat | Disturbed sites, savannas, open shrublands, pinelands | Arid shrublands, often on limestone |
Elevation | 0–300 m (0–1000 ft) | 1000–1800 m (3300–5900 ft) |
Distribution |
AL; FL; TX; Asia [Introduced in North America; introduced also in Mexico, West Indies, Central America, South America, Africa, Australia]
|
TX; Mexico (Coahuila) |
Discussion | A velvety-tomentose herb sometimes used in herbal medicines, Sida cordifolia is believed to have originated in India, but has been widely spread in warmer regions globally. In many areas it is considered to be an invasive weed. There is considerable variation in the flower color patterns; the velvety-tomentose indument and retrorsely barbed, relatively large or conspicuous spines can help in identification. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Sida longipes is known from at least six counties in the Big Bend region of southwestern Texas. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 6, p. 313. | FNA vol. 6, p. 315. |
Parent taxa | Malvaceae > subfam. Malvoideae > Sida | Malvaceae > subfam. Malvoideae > Sida |
Sibling taxa | ||
Synonyms | S. althaeifolia, S. pellita | |
Name authority | Linnaeus: Sp. Pl. 2: 684. (1753) | A. Gray: Smithsonian Contr. Knowl. 3(5): 19. (1852) |
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