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FNA | Family List | FNA Vol. 7 | Cleomaceae | Cleoserrata

1. Cleoserrata speciosa (Rafinesque) H. H. Iltis, Novon. 17: 448. 2007.

Showy or garden spiderflower, volantines-preciosos Showy or garden spiderflower, volantines-preciosos

Cleome speciosa Rafinesque, Fl. Ludov., 86. 1817; C. speciosissima Deppe ex Lindley; Gynandropsis speciosa de Candolle

Plants 50-150 cm. Stems unbranched or sparsely branched ; (fluted), glabrous or sparsely glandular-pubescent. Leaves: petiole 2-12 cm ,(glandular-pubescent); leaflets 5-9, blade narrowly lanceolate-elliptic, 6-15 × 1-5 cm, margins entire or serrulate, apex subobtuse, surfaces glabrate to glandular-pubescent. Racemes 15-50 cm (20-60 cm in fruit, glandular-pubescent); bracts unifoliate, ovate-cordate, 3-18 mm. Pedicels 10-50 mm, (glabrous). Flowers: sepals persistent, green, lanceolate, 4-7 × 0.8-1.2 mm, glandular-pubescent; petals usually brilliant pink to purple, fading to pink or white, rarely initially white, ovate, 15-42 × 8-11 mm, clawed; stamens green, 40-85 mm, (filaments adnate to gynophore 1/3-1/2 of length); anthers 6-10 mm; gynophore 30-85 mm in fruit (filament scars visible ca. 1/4 of length); ovary 6-10 mm; style 1-1.2 mm. Capsules (irregularly contracted between seeds) 60-150 × 3-5 mm. Seeds pale green to brown, 2.5-3.5 × 1-1.2 mm, tuberculate. 2n = 48.

Flowering summer. Disturbed roadsides, vacant lots; 0-50 m; introduced; Fla.; Mexico; West Indies; Central America; South America.

Cleoserrata speciosa is widespread horticulturally (with white-flowered plants not uncommon). It strongly resembles Tarenaya hassleriana (Cleome hassleriana) to the untrained eye (W. R. Ernst 1963b); considering its unique floral morphology and cytology, it remains difficult to place.


 

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