Inventory of the flora of Big Bend National Park Brewster County ...

[Brewster Co.: Chisos Mts. (Sperry, 1938)]
Chamaesyce setiloba (Engelm. ex Torr.) Millsp. ex Parish
[Wheeler, 1941]
[Brewster Co.: between Nugent Mtn. and Lone Mtn., Warnock T526c (US); Persimmon
Gap, Warnock T553 (US)]
Chamaesyce theriaca (L. C. Wheeler) Shinners
[Wheeler, 1941]
[Brewster Co.: Chisos Mts., Blue Creek, 01 Aug 1931, Mueller 8080 (GH, Type)]
Chamaesyce villifera (Scheele) Small Hairy Spurge
[Sperry, 1938; Wheeler, 1941]
[Brewster Co.: Chisos Mts. (Sperry, 1938); Blue Creek, Chisos Mts., Cory 7006 (GH);
Blue Creek Trail, Chisos Mts., Cory 7329 (GH); Chisos Mts., Mueller 8081 (GH; NY);
Basin, Chisos Mts., Warnock C646 (US)]
Croton dioicus Cav.
[Croton neomexicanus Cav.]
[Sperry, 1938; Johnston & Warnock, 1962, mapped]
[Brewster Co.: Boquillas, Smoky Creek and Lechuguilla Flats (Sperry, 1938)]
Croton fruticulosus Torr.
[Sperry, 1938; Johnston & Warnock, 1962, mapped; Wells, 1965; Powell, 1998]
[Brewster Co.: Muskhog Spring, Oak Creek Canyon and Panther Spring (Sperry, 1938);
Dead Horse Mts. (Powell, 1998); Sue Peak (Wells, 1965)]
Croton lindheimerianus Scheele var. tharpii M. C. Johnst.
[Johnston & Warnock, 1962, mapped]
Croton incanus Kunth Torry Croton
[Powell, 1998]
[Brewster Co.: Boquillas Canyon (Powell, 1998)]
Croton pottsii (Klotz.) Muell.-Arg.
[Croton corymbulosus Engelm.]
[var. pottsii]
[Sperry, 1938; Johnston & Warnock, 1962, mapped]
[Brewster Co.: Green Gulch, Pinnacle Mts. and Mesa de Anguilla (Sperry, 1938)]
var. thermophilus (M. C. Johnst.) M. C. Johnst.
[Johnston & Warnock, 1962, mapped; Powell, 1998]
[Brewster Co.: Boquillas Canyon, Dead Horse Mts., Tornillo Creek and Daggar Flats
(Powell, 1998)]
Ditaxis humilis (Engelm. & Gray) Pax
[Argythamnia humilis (Engelm. & Gray) Muell.-Arg. var. humilis]
[Johnston & Warnock, 1962, mapped; Turner, 2001, mapped]
Note: the pubescent form is mapped for BBNP (Turner, 2001).
Euphorbia antisyphilitica Zucc. Candelilla
[Steyermark & Moore, 1933; Sperry, 1938]
[Brewster Co.: near Glenn Spring and in Fresno Canyon (Sperry, 1998); Boquillas,
Moore & Steyermark 3443]
Euphorbia brachycera Engelm.
[Steyermark & Moore, 1933; Sperry, 1938]
[Brewster Co.: Pine Canyon (Sperry, 1938); Chisos Mts., Moore & Steyermerk 3334]
Euphorbia dentata Michx. Toothed Spurge
[Sperry, 1938]
[Brewster Co.: Green Gulch (Sperry, 1938)]
Euphorbia eriantha Benth.
[Steyermark & Moore, 1933; Sperry, 1938]
[Brewster Co.: between Roy’s Peak and Banta Shut-in,, along creek near Kit Mtn.,
along Rio Grande S of Chisos Mts. (Sperry, 1938); Boquillas Canyon, Moore & Steyermark
3440 (MO)]
Euphorbia exstipulata Engelm. var. lata Warnock & Johnston
[Warnock & Johnston, 1969]