Harvard University Herbaria & Libraries

Title	Cacti of the United States and Canada, The; with Line Drawings by Lucretia Breazeale Hamilton. Stanford, CA
Abbreviation	Cacti U. S. Canada
Authors	L. D. Benson
Publication Dates	1982
Remarks	ix, 1044, [48] pages of plates : ill. (some col.), maps ; 29 cm

The Harvard University Herbaria hold 29 type specimens of taxa cited in this publication

Mammillaria echinus Engelmann [Isolectotype (Isolectotype designation)] 1982, 962
Opuntia tenuispina Engelmann [Isolectotype (Isolectotype designation)] 1982, 926
Opuntia filipendula Engelmann [Isolectotype (Isolectotype designation)] 1982, 926
Cereus berlandieri Engelmann [Isolectotype (Isolectotype designation)] 1982, 941
Echinocactus intertextus var. dasyacanthus Engelmann [Isolectotype (Isolectotype designation)] 1982, 957
Opuntia strigil Engelmann [Isolectotype (Isolectotype designation)] 1982, 932
Echinocactus intertextus Engelmann [Isolectotype (Isolectotype designation)] 1982, 957
Opuntia strigil Engelmann [Isolectotype (Isolectotype designation)] 1982, 932
Opuntia arenaria Engelmann [Isolectotype (Isolectotype designation)] 1982, 920
Opuntia strigil Engelmann [Isolectotype (Isolectotype designation)] 1982, 932
Opuntia arenaria Engelmann [Isolectotype (Isolectotype designation)] 1982, 920
Opuntia tenuispina Engelmann [Isolectotype (Isolectotype designation)] 1982, 926
Echinocactus intertextus var. dasyacanthus Engelmann [Isosyntype (Isosyntype designation)] 1982, 957
Opuntia tetracantha Toumey [Isolectotype (Isolectotype designation)] 1982, 916
Opuntia versicolor Engelmann [Isolectotype (Isolectotype designation)] 1982, 915
Mammillaria pectinata Engelmann [Isolectotype (Isolectotype designation)] 1982, 962
Cereus berlandieri Engelmann [Isolectotype (Isolectotype designation)] 1982, 941
Echinocactus uncinatus var. wrightii Engelmann [Isolectotype (Isolectotype designation)] 1982, 958
Mammillaria vivipara subvar. borealis Engelmann [Isolectotype (Isolectotype designation)] 1982, 960
Cereus viridiflorus var. cylindricus Engelmann [Isolectotype (Isolectotype designation)] 1982, 947
Opuntia polyacantha var. watsonii Coulter [Isolectotype (Isolectotype designation)] 1982, 918
Mammillaria scheeri var. valida Engelmann [Isolectotype (Isolectotype designation)] 1982, 960
Mammillaria vivipara subvar. borealis Engelmann [Isolectotype (Isolectotype designation)] 1982, 960
Cereus chloranthus Engelmann [Isolectotype (Isolectotype designation)] 1982, 948
Opuntia filipendula Engelmann [Isolectotype (Isolectotype designation)] 1982, 926
Opuntia arborescens Engelmann [Isolectotype (Isolectotype designation)] 1982, 914
Opuntia arborescens Engelmann [Isolectotype (Isolectotype designation)] 1982, 914
Opuntia arborescens Engelmann [Isolectotype (Isolectotype designation)] 1982, 914
Opuntia fragilis var. frutescens Engelmann & A. Gray [Isolectotype (Isolectotype designation)] 1982, 915

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