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(Last Modified On 9/4/2013)
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(Last Modified On 9/4/2013)
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Species
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Diodia teres Walt.
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PlaceOfPublication
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Fl. Carol. 87. 1788.
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Note
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TYPE: "In sabulosis sylvarum a Virginia ad Carolinam" Walter (BM, not seen).
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Synonym
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Diodia prostrata Swartz, Prodr. Veg. Ind. Occ. 30. 1788. TYPE: not seen.
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Description
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Herbs, often woody at the base, prostrate and forming mats, or erect and to 0.3 m tall, the branches terete or angular, delicately 4-ribbed, white villose, the
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Habit
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Herbs
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Description
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hairs to 1.2 mm long, with smaller crinkly hairs interspersed. Leaves sessile, spreading, occasionally deflexed, subulate, narrowly oblong or narrowly ovate oblong, 1.5-2.5 cm long, 0.2-0.4(-0.8) cm wide, subequilateral, tapering acutely at the apex, the terminal seta to 1.5 mm long, white, basally obtuse or truncate, the costa subimmersed above, prominulous beneath, the lateral veins evanescent, stiffly papyraceous, white punctate and hispid above and beneath, the hairs to 2 mm long, erect or curled, the margin frequently revolute, scabridulous, the hairs usually associated with marginal setas; stipules connate, cuplike, the setas prom- inent, stiff, ascending, linear, ca. 10, subequal, to 6(-7) mm long, usually 2-3 times the length of the sheath, the latter with few, elongate, stiff, reflexed, white hairs, these usually associated with the marginal setas, the hairs at the base of the sheath absent, or if present, shorter and weaker. Inflorescences axillary, the flowers few. Flowers with the hypanthium oblong, to 1.8 mm long, truncate, densely hirsute, the calycine cup scarcely measurable, the teeth 4, unequal, sub- ulate, to 2 mm long, acute, petaloid, densely ciliate with 1-2 glandular, subulate structures, ca. 0.1 mm long in the sutures; corolla white or pink, the tube cam- panulate, to 5 mm long, petaloid, glabrous within except for a ring of hairs ca. 1.5 mm from the base of the tube, with scattered uncinate hairs outside, the lobes 4, oblong or deltoid, to 2 mm long, acute; stamens 4, the anthers oblong, to 1.2 mm long, obtuse, dorsifixed or subversatile, the filaments short, attached just below the middle of the throat; stigmas 2, the style filamentous, to 7 mm long, the ovary thick walled. Fruits sessile, indehiscent, of 2 mericarps, turbinate, ca. 3 mm long at maturity, hispid; seeds red brown, reticulate, the calyx deciduous.
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Distribution
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common throughout Middle America and South America. It is found in the United States, ranging from Connecticut south to Florida and Texas and westward to Oklahoma.
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Specimen
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CHIRIQUf: Cerro Horqueta, ca. 5000 ft, Dwyer et al. 458 (GH, MO, US). COCLE: Nata, Allen 835 (MO). E of Nata, Duke 12384 (MO). Penonome, Ebinger 1006 (MO). HERRERA: Las Minas and Pes6, Burch et al. 1323 (F, GH, K, MO, NY, UC, US); Duke 12301 (MO). Las Minas, La Penia, Stern et al. 1778 (MO). Ocu, Tyson et al. 2857 (MO). ?2 mi N of Macaras, Rio La Villa, Tyson et al. 3131 (MO, SCZ). VERAGUAS: 5 mi NE of La Mesa, Blum & Tyson 657 (MO). 10 mi W of Santiago, Duke 13658 (MO). Isla de Coiba, Dwyer 1675 (MO). 2 mi W of Santiago, Dwyer et al. 7535 (GH, MO, US). 50 km E of Santiago, Folsom 3911 (MO). 1-2 mi above Santa Fe, Gentry 3047 (MO). 1/2 km W of Highway 50, turnoff to Ocu, Nee 8001, 8009 (both MO). Just S of Santa Fe, 450 m, Nee 8026 (MO).
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