*Sida rhombifolia Linnaeus var. rhombifolia . Common name: Arrowleaf Sida, Axocatzin. Phenology: Apr-Oct. Habitat: Roadsides, fields, gardens, disturbed areas. Distribution: Southeastern North America west to TX, south through Mexico, Central America, and n. South America; West Indies; the original distribution of this species is uncertain, but Fryxell & Hill (2015m) and POWO (2024) suggest it is native to the Old World tropics.
Origin/Endemic status: Paleotropics
Taxonomy Comments: Verdcourt (2004) discussed variation in this taxon, and suggested that "studies throughout the entire range of the species will necessitate recognition of more than one species". He recognized six varieties in e. Africa, aside from the Linnaean var. rhombifolia (with type in Jamaica).
Synonymy ⓘ: = FNA6, NSProv, Va, Verdcourt (2004); = n/a — Pa; = Sida rhombifolia ssp. rhombifolia — POWO; < Sida rhombifolia L. — Bah, C, F, Fl4, G, K4, Mex, NS, RAB, S, S13, Tn, Tx, W, WH3, WI, Fryxell (1985). Basionym: Sida rhombifolia L. 1753
Links to other floras: = Sida rhombifolia var. rhombifolia - FNA6
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Wetland Indicator Status:
- Atlantic and Gulf Coastal Plain: FACU (name change)
- Eastern Mountains and Piedmont: UPL (name change)
- Great Plains: FACU (name change)
- Midwest: UPL (name change)
Heliophily ⓘ: 9
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© Sonnia Hill | Original Image ⭷
© Bruce A. Sorrie | Original Image ⭷
© Richard & Teresa Ware CC-BY-NC, permission granted to NCBG | Original Image ⭷
© Keith Bradley | Original Image ⭷
© Erik Danielson source | Original Image ⭷
© Sonnia Hill | Original Image ⭷
© Jay Horn source | Original Image ⭷Feedback
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Horticultural Information
Intro: Upright annual.
Stems: Stems tough-woody with stringy park, branched, hairy.
Leaves: Leaves alternate, short petiolate with awn-shaped stipules, elongate-diamond-shaped, to 3 in. long, serrate to toothed above middle, densely hairy below.
Inforescence:
Flowers: Flowers solitary on short stalks from leaf axils, cream-colored to yellow, about 3/4 in. wide, consisting of 5 nonsymmetrical petals surrounding a central cluster of fused stamens and styles.
Fruits: Fruit a ring of 8-12 joined podlike, kidney-shaped segments, each with 1 beak; about 1/2 in. wide and surrounded by persistent, triangular calyx lobes.
Comments: Probably native to the Old World tropics, but now established in the southeastern U.S.
Height: 2-3 ft.
plant sale text:
bloom table text:
description: Upright annual.
stems: Stems tough-woody with stringy park, branched, hairy.
leaves: Leaves alternate, short petiolate with awn-shaped stipules, elongate-diamond-shaped, to 3 in. long, serrate to toothed above middle, densely hairy below.
inflorescence:
flowers: Flowers solitary on short stalks from leaf axils, cream-colored to yellow, about 3/4 in. wide, consisting of 5 nonsymmetrical petals surrounding a central cluster of fused stamens and styles.
fruits: Fruit a ring of 8-12 joined podlike, kidney-shaped segments, each with 1 beak; about 1/2 in. wide and surrounded by persistent, triangular calyx lobes.
comments: Probably native to the Old World tropics, but now established in the southeastern U.S.
cultural notes:
germination code:
native range:
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