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Phyiologia (May 1990) 68(5):410-412. A NEW SPECIES OF 5r£'r/0P5/5 (ASTERACEAE: EUPATORIEAE) FROM NUEVO LEON, MEXICO B.L. Turner Department of Botany, University of Texas, Austin, Texas 78713 U.S.A. ABSTRACT A new species of Steviopsis from Cerro Pena Nevada, Nuevo Leon, Mexico belonging to the Asteraceae, tribe Eupatorieae, is described and illustrated. KEY WORDS: Asteraceae. Eupatorieae, Steviopsis. Mexico. Routine identification of composites from northern Mexico obtained by Dr. Guy Nesom during 1988 has revealed the following, previously uncollected, novelty. It is positioned in the genus Steviopsis (sensu Turner 1988) because it possesses mostly alternate leaves, 4-5 seriate, strongly graduate involucral bracts that are not readily deciduous, tubular coroUas with glandular lobes, ampliate smooth style branches and glabrous achenes with 6-9 ribs, the pappus of 25 readily deciduous bristles. Nevertheless it is not especially close to any previously described species and may ultimately be recognized by some workers as a distinct genus. Steviopsis nesomii B. Turner, spec, nov., Figure 1. TYPE: Mexico. Nuevo Leon: Mpio. Doctor Arroyo, ca. 35 km NE of Doctor Arroyo, N side of peak known as Picacho Onofre, just north of Cerro Pena Nevada (ca. 23° 46' N, 99° 52' W), area of rock outcrops along logging trail up from road at "El Puerto,'^ 15 Oct 1988, Guy Nesom [with David Morgan] 6782 (HOLOTYPE: TEX; Xerotype: MEXU). Steviopsis dryophilae (B.L. Robins.) B. Turner leviter similis sed foliis infra medium plerumque alternatis manifeste petiolatis supra medium multum redactis sessilis, capitulis minoribus flosculis paucioribus, et acheniis glabris setis ca. 25 albis 4-5 mm longis. 410

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A new species of Steviopsis (Asteraceae: Eupatorieae) from Nuevo León, México

B L Turner
Phytologia 68: 410-412 (1990)

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