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Journal Article

Three New Species of Dasylirion (Nolinaceae) from Mexico and a Clarification of the D. longissimum Complex

David J. Bogler
Brittonia
Vol. 50, No. 1 (Jan. - Mar., 1998), pp. 71-86
Published by: Springer on behalf of the New York Botanical Garden Press
Stable URL: http://www.jstor.org/stable/2807720
Page Count: 16

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Topics: Bracts, Fruits, Leaves, Plant spines, Inflorescences, Arroyos, Plants, Tree trunks, Flowers, New species
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Three New Species of Dasylirion (Nolinaceae) from Mexico and a Clarification of the D. longissimum Complex
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Abstract

Three new species of Dasylirion and a new variety of D. longissimum Lem. from the mountains of northern Mexico are described and illustrated. Two of the new species are from northwestern Mexico: D. gentryi, with large, rosecolored fruits and glossy, non-waxy leaves; and D. sereke, characterized by roundish fruits with an unusually large style. Dasylirion miquihuanense is a new species from northern Mexico with narrow, strictly upright leaves and widely separated marginal prickles. The Dasylirion longissimum complex consists of two species, D. quadrangulatum S. Wats. and D. longissimum Lem., characterized by narrow, quadragulate leaves with reduced or absent marginal prickles. Distinguishing features of these two species, which have often been confused, are presented and D. longissimum var. treleasei, characterized by small flowers and fruits, is described.

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