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Project Name Data (Last Modified On 1/28/2013)

Flora Data (Last Modified On 1/28/2013)
PlaceOfPublication Sp. P1. 224. 1753.
Synonym Coluppa Adans. Fam. Fl. 2:268. 1763. Bragantia Vand. Fasc. P1. Nov. 6. 1771. Wadapus Raf. Fl. Tell. 3:77. 1837. Xerosiphon Turcz. in Bull. Soc. Nat. Mosc. 16:5 5. 1843. Xeraea 0. Ktze. Rev. Gen. 545. 1891. Amarantoides Maza, Fl. Haban. 94. 1897.
Description Flowers perfect, bracteate and bibracteolate, sessile in spikes or heads. Sepals 5, basally connate or discrete, hypogynous, concave, subequal, colorless or brightly colored. Stamens 5, hypogynous, the filaments connate forming a deep stamen tube, the anthers sessile at the summit of the tube; pseudostaminodia 2-lobate; anthers 2-locellate, introrse, medially attached. Ovary globose to obovoid, 1- locular, 1-ovulate, the ovule campylotropous on an elongate flattened funicle; style 1, filiform, about as long as the 2 filiform stigmata. Fruit an indehiscent utricle; seeds cochleate-orbiculate. Pubescent erect or decumbent annual or perennial herbs. Leaves opposite, sessile or petiolate, entire, usually pubescent, apparently deciduous. Inflorescences of terminal and occasionally axillary globose to cylindric solitary or clustered heads, usually subtended by foliar leaves.
Note This genus of nearly a hundred species, with some native to tropical America and others to tropical Austral-Asia, seem to reach its best development in South America. Several species are widely cultivated, as is the "bachelor's button", G. globosa, a rather handsome ornamental with edible leaves.
Distribution Four species are known from Central America but only two are reported from Panama.
Key a. Heads 5-14 mm. in diameter; bracteoles 4-6 mm. long; leaves 1-5 cm. long. -------------------------------------------1. G. DECUMNBENS aa. Heads 15-25 mm. in diameter; brncteoles 7-12 mm. long; leaves 2-10 cm. long. ------------------------------------- 2. G. GLOBOSA
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