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(Last Modified On 6/6/2013)
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(Last Modified On 6/6/2013)
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Species
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Stevia lucida Lag.
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PlaceOfPublication
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Gen. Sp. P1. Nov. 28. 1816.
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Note
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TYPE: Mexico, Ixmiquilpan and Zimapan (Cimmapan), Hidalgo, Nee (MA, not seen)
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Synonym
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Stevia glutinosa H.B.K., Nov. Gen. Sp. P1. 4: 116. ed. fol. 1818. TYPE: Colombia, near Santa Fe de Bogota and Suacha, Humboldt & Bonpland (P, not seen, US, microfiche). Stevia fastigiata H.B.K., Nov. Gen. Sp. P1. 4: 116. ed. fol. 1818. TYPE: Mexico, near city of Guanajuato, Humboldt & Bonpland (P, not seen, US, microfiche). ? Stevia nitida Walp., Linnaea 14: 320. 1840. TYPE: Mexico, without precise locality, Karwinski (LE?, not seen). Stevia grandidentata Schultz-Bip. ex Klatt, Leopoldina 20: 75. 1884, not S. grandidentata Schultz- Bip., Bull. Soc. Bot. France 12: 81. 1865. TYPE: Mexico, Tehuacain, Puebla, Liebmann 126 (P, holotype, not seen). Stevia oaxacana Schultz-Bip. ex. Klatt, Leopoldina 20: 75. 1884, nom. nud.
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Description
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Shrubs to 2 m tall with few to many branches, with stems, leaves, branches of inflorescence and involucral bracts vernicose; stems mostly brown, terete or slightly hexagonal, internodes often short, usually glabrous. Leaves opposite; blades oblong-ovate to lanceolate, to 16 cm long and 5 cm wide, somewhat conduplicate, the base cuneate or rarely subtruncate, the margins regularly serrate or crenate to remotely dentate, the apex shortly to narrowly acute or slightly acuminate, the surfaces densely glandular-punctate, the lower surface pale and more fleshy; the veins pinnate or with lower pair slightly more prominent; petioles to 2 cm--long, wings not obvious. Inflorescence flat-topped, corymbose, with lower branches opposite or alternate, the branches puberulous, the ultimate branches 0-2 mm long. Heads mostly 9-11 mm high; involucral bracts narrowly oblong-elliptical, 5-6 mm long and 0.7-1.5 mm wide, glandular-punctate, the apex usually acute and somewhat scarious; corolla pink, 5-6 mm long, glandular- punctate with hairs on lower parts, the lobes equal, 1.0-1.2 mm long, glabrous. Achenes 3.5-5.5 mm long, hispid, rarely with some glands; pappus a low crown of dentate to entire, united or separate scales, 0.2 mm high, without awns.
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Habit
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Shrubs
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Distribution
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widely distributed from central Mexico southward through Central America to the northern Andes in Colombia and Venezuela.
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Note
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The species is one of the most distinct in the genus with glabrous vernicose leaves, stems, and involucral bracts. The species is the only member of the series Fruticosae in Panama, but the shrubby habit difference is not always evident in herbarium specimens. The Panamanian material of the species is all of the variety oaxacana (DC.) Grashoff which has the branches of the inflorescence subopposite or alternate.
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Specimen
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HIIQU: Llano del Volca'n, 4500 ft, Allen 4854 (MO). Llano del Volcain, 1500-1600 m, Allen & Fairchild 3470 (MO). Volcain de Chiriqui, Potrero Muleto, 10400 ft, Davidson 1052 (F, US). Between El Hato and Cerro Punta, Ebinger 801 (F, MO, US). Baru' Mtn., 2900 m, McCorkle C-152 (US). W slope of El Bari', 6000-7000 ft. Tyson & Loftin 5959 (FSU, MO). Top of El Baru'i above 1100 ft. Tyson & Loftin 6178 (FSU). Rio Chiriqui Viejo valley, near El Volca'n, White 207 (MO, US). NE of El Hato del Volca'n, near Aguacate, 1800-1900 m, Wilbur et al. 10978 (MO, US). 5 mi NE of El Hato del Volcain towards Volcan de Chiriqui, Wilbur et al. 11870 (F, MO).
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