Rare and Threatened Species of Big Bend National Park, Texas 1996

Cacti:
Bunched Cory Cactus ( Coryphantha ramillosa ) Threatened
Chaffey's Cory Cactus ( Coryphantha chaffeyi ) Species of concern
Chisos Hedgehog Cactus ( Echinocereus chisoensis ) Threatened
Dense Cory Cactus ( Coryphantha dasyacantha ) Species of concern
Duncan's Cory Cactus ( Coryphantha duncanii ) Species of concern
Golden-Spined Prickly Pear ( Opuntia aureispina ) Species of concern
Lloyd's Mariposa Cactus ( Echinomastus mariposensis ) Threatened
*Night-Blooming Cereus ( Peniocereus greggii ) Species of concern
Silver-Spined Cholla ( Opuntia imbricata var. argentea ) Species of concern
White Column Cactus ( Coryphantha albicolumnaria ) Species of concern
Succulents:
Chisos Agave ( Agave glomeruliflora ) Species of concern
Orchids:
Chisos Coral Root ( Hexalectris revoluta ) Species of concern
Glass Mountain Coral Root ( Hexalectris nitida ) Species of concern
Texas Purple Spike ( Hexalectris warnockii ) Species of concern
Trees:
Chisos Hophornbeam ( Ostrya chisosensis ) Species of concern
Chisos Mountain Oak ( Quercus tardifolia ) Species of concern
Slender Oak ( Quercus graciliformis ) Species of concern
Shrubs:
Little-Leaf Brongniartia ( Brongniartia minutifolia ) Species of concern
Purple Gay Mallow ( Batesimalva violacea ) Species of concern
Trans-Pecos Maidenbush ( Andrachne arida ) Species of concern
Forbs:
Bigpod Bonamia ( Bonamia ovalifolia ) Species of concern
Chisos Pinweed ( Lechea mensalis ) Species of concern
Cutler's Twistflower ( Streptanthus cutleri ) Species of concern
Long-Spur Columbine ( Aquilegia longissima ) Species of concern
Puckering Nightshade ( Nectouxia formosa ) Species of concern
*Sonoran Fleabane ( Erigeron mimegletes ) Species of concern
Swallow Spurge ( Chamaesyce golondrina ) Species of concern
Tall-Stemmed Paintbrush ( Castilleja elongata) Candidate Species
Three-Tongued Spurge ( Chamaesyce chaetocalyx var. triligulata ) Species of concern
*Two-Bristle Rock Daisy ( Perityle bisetosa var. bisetosa ) Species of concern
*Wright's Water Willow ( Justicia wrightii ) Species of concern
Grasses:
Guadalupe Fescue ( Festuca ligulata ) Candidate Species

This web-based plant guide was developed by USGS/NBII for Big Bend based on:
Denise A. Louie, The Rare and Threatened Plant Species of Big Bend National Park,Texas: A Field Guide.

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