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Project Name Data (Last Modified On 1/25/2013)

Flora Data (Last Modified On 1/25/2013)
PlaceOfPublication Sp. P1. 20. 1753.
Synonym Centrostachys Wall. in Roxb. Fl. Ind. 2:497. 1824. Cadelaria Raf. Fl. Tell. 3:39. 1837. Stachyarpagophora Vaill. in Maza, Fl. Haban. 92. 1897.
Description Flowers perfect, bracteate and bibracteolate, subsessile in elongate spikes. Sepals 4-5, discrete, hypogynous, concave, subequal, obscurely 3-5 nerved, occa- sionally pungent. Stamens 2-5, the filaments flattened and united below forming an appendiculate tube; anthers 4--locellate, introrse, medially attached. Ovary obovoid, 1-locular, 1-ovulate; ovules campylotropous on elongate flattened funicles; style 1, filiform; stigma 1, capitate. Fruit a membranaceous turbinate indehiscent utricle; seeds cochleate-orbiculate, reddish brown. Glabrous to pubescent erect or decumbent annual or perennial herbs. Leaves opposite, short- petiolate, scantily appressed strigose to sericeous, deciduous. Inflorescences of terminal and axillary spikes, the flowers deflexed in age, the spinose tips of the bracts not uncinate.
Distribution This weedy genus, of about five species, mostly of the Old World, is repre- sented by one species in Central America.
Note The spines of the inflorescences are often a source of discomfort. Two varieties of one species occur in Panama.
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