Mirabilis jalapa
Mirabilis alipes
four o'clock, four o'clock flower, four o'clock umbrella-wort, marvel of peru, wishbone bush
wing four o'clock
2–4 dm.
spreading;
petioles of proximal leaves 0.5–0.7 cm;
blades of midstem leaves ovate to widely ovate, 4.5–9 × 3.5–5 cm, base obtuse to rounded, often oblique, apex obtuse, rarely acute.
peduncle 3–10 mm;
involucres erect to pendent, 11–30 mm;
bracts 6–9, distinct or to 50% connate, apex acute to obtuse, rarely rounded.
6–9 per involucre;
perianth usually magenta, occasionally creamy white, bell-shaped, 1.5–1.8 cm.
mottled olive green, with 10 slender, tan ribs, ellipsoid, 5.5–7 mm, rugulose, glabrous, secreting thick, heavy mucilage when wetted.
Mirabilis jalapa
Mirabilis alipes
Varieties 2 (1 in the flora).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Hermidium was once maintained as a genus based on discrete involucral bracts. As discussed by G. E. Pilz (1978), distinct bracts are typical, but involucres with the five outermost bracts united to one-half their length are common.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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