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Project Name Data (Last Modified On 5/10/2013)
 

Flora Data (Last Modified On 5/10/2013)
Genus Stachytarpheta Vahl
PlaceOfPublication Enum. 1: 205. 1805, nom. cons.
Synonym Serarda Adans., Fam. P1. 2: 12. 1763. Sherardia Vaill. ex Adans., Fam. P1. 2: 198. 1763. Valerianoides Boeth. ex Medic., Phil. Bot. 1: 177. 1789, nom. rejic. Abena Neck., Elem. 1: 296. 1790. Vermicularia Moench, Meth. Suppl. 150. 1802, nom. rejic. Cymburus Salisb., Parad. Lond. pl. 49. 1806. Melasanthus Pohl, P1. Bras. Ic. 1: 75, pl. 60. 1827. Stachytarpha Link, Enum. Hort. Berol. 1: 18. 1827. Tarpheta Raf., Fl. Tellur. 2: 103. 1836.
Description Annual or perennial herbs or low shrubs, glabrous throughout or villous with simple trichomes. Leaves opposite or alternate, dentate, often rugose. Inflores- cences terminal, spicate, the spikes elongate or abbreviated, densely or loosely many-flowered, occasionally few-flowered, the flowers sessile or semi-immersed in furrows in the rachis of the spike, each solitary in the axil of a bract; bracts small and narrow, appressed or spreading, or large and ovate or lanceolate, often rigid and imbricate, persistent. Flowers with the calyx long, narrowly tubular, mem- branous or herbaceous, 5-costate, 5-lobed, or 5-dentate apically, the teeth equal or unequal, unchanged in fruit or sometimes variously split in age; corolla white, blue, purple, or red, gamopetalous, usually hypocrateriform, the tube cylindric, straight or incurved, slender throughout or ampliate apically, the limb spreading, 5-parted, the lobes broad, often orbicular, obtuse or retuse apically, equal or more or less unequal; perfect stamens 2, anterior, inserted above the middle of the corolla-tube, included, the filaments short, the anthers unappendaged, the thecae divergent and dehiscing in one continuous line, staminodes 2, posterior, small or minute; ovary 2-loculed, each locule 1-ovuled, the ovule attached laterally near the base of the locule, the style elongate, filiform, the stigma terminal, orbicular, capitate or subcapitate. Fruits oblong-linear, dry, included by the fruiting-calyx, splitting at maturity into 2 long, hard, narrow, truncate, 1-seeded cocci; seeds erect, linear, without endosperm.
Habit herbs shrubs
Distribution A genus of about 140 species and infraspecific entities, widely distributed in subtropical and tropical America, with a few (mostly naturalized) in tropical Asia, Africa, and Oceania.
Key a. Rachis heavy and thick, deeply excavated (furrowed) in fruit ...... 1. S. jamaicensis aa. Rachis slender, shallowly excavated (furrowed) in fruit. b. Spikes glabrous or subglabrous throughout, the bracts 5-7 mm long ...... 2. S. guatemalensis bb. Spikes more or less puberulent throughout, the bracts about 4 mm long; leaf-blades mostly smaller and rounded or obtuse apically ...... 3. S. cayennensis
 
 
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