Crotalaria lanceolata |
Crotalaria lanceolata subsp. lanceolata |
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lanceleaf rattlebox |
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Habit | Herbs annual or short-lived perennial. | |
Stems | erect, 30–150 cm, strigillose to strigose-hirsute. |
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Leaves | 3-foliolate; stipules absent; leaflet blades linear to linear-lanceolate or lanceolate, 40–110(–150) mm, length 5–10 times width, surfaces sparsely strigose abaxially, glabrous adaxially. |
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Racemes | 12–26(–40)-flowered, terminal, subterminal, or lateral, 10–35 cm; bracts persistent, subulate or filiform, 0.5–3 mm, basally expanded. |
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Flowers | calyx broadly cylindrical, truncate basally and deflexed against pedicel, 2.5–4 mm, lobes subulate to triangular-acuminate, usually shorter than tube, shiny-glabrous or glabrate; corolla yellow with faint reddish purple lines, often dark purple basally, 8–11 mm. |
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Legumes | (16–)18–38 × 4–6 mm, tip upcurved, strigose. |
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2n | = 16. |
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Crotalaria lanceolata |
Crotalaria lanceolata subsp. lanceolata |
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Phenology | Flowering Jul–Nov, Jan–Apr (year-round). | |
Habitat | Sandy fields, sandhills, roadsides, ditches, river and swamp edges, woodland edges, disturbed areas, pine flatwoods, palm-live oak woods. | |
Elevation | 0–20 m. (0–100 ft.) | |
Distribution |
Africa [Introduced in North America]
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AL; FL; GA; LA; NC; SC; Africa; Indian Ocean Islands (Madagascar) [Introduced in North America; introduced also in South America (Colombia), e Asia (Taiwan), Pacific Islands (Hawaii), Australia] |
Discussion | Subspecies 3–5 (1 in the flora). Subspecies exigua Polhill and subsp. prognatha Polhill are known from Africa. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 11. | FNA vol. 11. |
Parent taxa | Fabaceae > subfam. Faboideae > Crotalaria | Fabaceae > subfam. Faboideae > Crotalaria > Crotalaria lanceolata |
Sibling taxa | ||
Subordinate taxa | ||
Name authority | E. Meyer in E. Meyer and J. F. Drège: Comm. Pl. Afr. Austr., 24. (1836) | unknown |
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