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Project Name Data (Last Modified On 7/30/2013)

Flora Data (Last Modified On 7/30/2013)
Genus Tetramerium Nees
PlaceOfPublication Benth., Bot. Voy. Sulphur 147. 1846, nom. cons.
Note TYPE: T. polystachyam Nees. typ. cons.
Description Herbs, sometimes suffrutescent; stems erect or declining, much branched, pubescence often arranged in two opposite lines, the old bark often exfoliating. Leaves linear to ovate, entire, glabrous or pubescent, sessile or petiolate. In- florescences in terminal, 4-sided spikes; bracts opposite, 4-ranked, conspicuous, often closely imbricate with cuspidate apex; pedicels 2 per bract. Flowers with the calyx 4-5-merous, equal, the segments ciliate; corollas funnelform to tubular, the lower lip entire, the upper lip 3-lobed, the lobes about equal; stamens 2, included in the entire lower lobe, the anther cells slightly unequal. Capsules clavate, apiculate, 4- or 2-seeded; seeds flattened, papillate or muriculate.
Habit Herbs
Note There are approximately 25 species in this genus,
Distribution ranges from southern United States to Colombia and Ecuador.
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