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The Texas Species of Croton (Euphorbiaceae)

Marshall C. Johnston
The Southwestern Naturalist
Vol. 3, No. 1/4 (1958), pp. 175-203
DOI: 10.2307/3669050
Stable URL: http://www.jstor.org/stable/3669050
Page Count: 29
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The Texas Species of Croton (Euphorbiaceae)
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Abstract

Key and principal synonymy are given for the 18 accepted Texas species of Croton, and maps are provided to show Texas distribution as indicated by herbarium specimens in several institutions. The species include C. glandulosus L. (3 varieties in Texas: var. septentrionalis Muell. Arg., var. Lindheimeri Muell. Arg., and var. pubentissimus Croizat); C. monanthogynus Michx.; C. leucophyllus Muell. Arg. var. leucophyllus, incl. C. Palmeri S. Wats. (the Mexican variety trisepalis Ferguson is also mentioned); C. corymbulosus Engelm. (var. corymbulosus, and var. thermophilus, new variety); C. Lindheimerianus Scheele (var. Lindheimerianus, and var. Tharpii, new variety); C. capitatus Michx. (var. capitatus, var. Lindheimeri (Engelm. & Gray) Muell. Arg., and var. albinoides (Ferguson) Shinners, incl. C. Muelleri Coulter); C. Coryi Croizat; C. punctatus Jacq.; C. dioicus Cav. (incl. C. neomexicanus Muell. Arg.); C. texensis (Klotzsch) Muell. Arg.; C. Parksii Croizat; C. argyranthemus Michx.; C. ciliatoglandulosus Ort.; C. humilis L.; C. Torreyanus Muell. Arg.; C. suaveolens Torr.; C. Cortesianus H.B.K.; C. fruticulosus Engelm.; lectotypes are designated for several of these names.

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