Crotalaria incana
Crotalaria rotundifolia
fuzzy rattlepod, shake-shake, wooly rattlepod
rabbitbells
of the latter are characterized as shrubs or creeping herbs, the stems with long, yellow-brown, spreading hairs (versus shorter, more appressed hairs in subsp. incana), inflorescence bracts usually 4–10 (versus 1–3) mm, and calyx lobes pilose (versus glabrate).
prostrate to decumbent or ascending, 10–70 cm, strigose or strigose-sericeous to hirsute-villous.
unifoliolate;
stipules lanceolate-auriculate or triangular, with 2 distinct lobes, decurrent on mid and distal stems, 2–10 mm;
blade broadly elliptic, elliptic-ovate, ovate, broadly lanceolate, linear, linear-lanceolate, or obovate-oblanceolate, 9–50 mm, length 1–2.5(–12) times width, surfaces strigose to strigose-hirsute.
(1 or)2–5-flowered, terminal, subterminal, or lateral, 4–20 cm;
bracts persistent, linear-subulate to lanceolate.
calyx broadly cylindrical, 5–9 mm, lobes triangular-lanceolate, glabrous or slightly puberulous;
corolla bright yellow, banner sometimes red-lined, 7–13 mm.
12–28 × 7–12 mm, glabrous.
subspecies of Crotalaria incana are native to southeast Africa, where they are partially sympatric.
purpurascens (Lamarck) Milne-Redhead occurs also in Madagascar.
Crotalaria incana
Crotalaria rotundifolia
Varieties 2 (1 in the flora).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Varieties 2 (2 in the flora).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Leaves usually spreading, blades broadly elliptic to elliptic-ovate, ovate, or broadly lanceolate, 9–20 × 10–15 mm, lengths mostly 1–2.5 times widths. | var. rotundifolia |
1. Leaves usually ascending-erect, blades linear to linear-lanceolate, or obovate-oblanceolate on proximal 1/3 of stems, linear distally, 10–50 × 1–4 mm, lengths 5–12 times widths. | var. linaria |
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