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FNA | Family List | FNA Vol. 26 | Iridaceae | Chasmanthe

1. Chasmanthe floribunda (Salisbury) N. E. Brown, Trans. Roy. Soc. South Africa. 20: 274. 1932.

Antholyza floribunda Salisbury, Trans. Hort. Soc. London 1: 324. 1812; A. prealta Redouté

Plants 60–120 cm; corm depressed-globose, 40–70 mm diam. Stems 1–2-branched. Leaves 8–10, mostly basal, basal longer than cauline; blade lanceolate, ± reaching base of spike, 18–35 mm wide. Spikes 25–40-flowered; outer spathe 13–15 mm, apex obtuse to truncate; inner ± equaling outer, apex bifurcate; flowers distichous. Tepals: perianth tube 35–45 mm, 9–12 mm proximally, often twisted, ca. 40 mm distally, base pouched; dorsal tepal horizontal, 28–33 × 7–9 mm, much exceeding others; lateral tepals patent or recurved, 12–15 × 4–7 mm; lower median tepal slightly smaller than laterals; filaments 50–55 mm; anthers 7–8 mm; ovary 6–9 mm, style branching shortly below and opposite to anthers (or exceeding them); branches 7–10 mm. Capsules 10–15 mm. Seeds 5–7 mm diam.

Flowering mostly Feb--May. Road verges, grassy slopes; 0--100 m; introduced; Calif.; South Africa.

Chasmanthe floribunda has escaped from gardens and has become naturalized locally. It is native to the winter-rainfall region of South Africa. The species has been confused in North America with C. aethiopica (Linnaeus) N. E. Brown, which has similar flowers but is a smaller plant with unbranched stems, normally flowering in the early winter months.


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