Opuntia phaeacantha var. spinosibacca (M.S.Anthony) L.D.Benson

• Region

  North America

• Country

  United States of America

• State/Province

  Texas

• County/Municipio

  Brewster Co.

• Locality

  Dead Horse Mountains near Boquillas Canyon, Big Bend National Park.

• Coordinates

  29.4675, -102.971

• Coordinate Uncertainty (m)

  27484

• Georeferencing Method

  GEOLocate Web Application. Assumed Sierra Del Caballo Muerto. Used ESRI USGS Topo USA layer to locate Sierra Del Caballo Muerto. Located coordinates of mountains by moving green marker to midpoint of range. Edited uncertainty radius to encompass entire area of range.

• Geodetic Datum

  WGS84

• Distribution

  Map all specimens of this taxon

Opuntia jjhaeacantha Engelm
var. spinosibacca
Anthony) L. Benson
DET' dupl. by Lyman Benson	july 19 79
Annotation - Herbarium of Arizona State University
Plants of Xexas
Brewster Co.
Opuntia phaeacantha var. spinosibacca
Dead Horse Mountains near Boquillas Canyon, Big Bend National Park,
limestone soil, few fruits maturing although numerous flowers present.
J. F. Weadin 1150	19 May 3 978
collection: J, F. Weedin 1150 Opuñtiá pháéácantha var« spinosibacca
-{Sew yor>
BOTANICAL
garden
NEW YORK BOTANICAL GARDEN
03888584
I feel that the descriptions of Anthony (Amer. Mid. Nat. 55: 247-249) and
W&niger (Cacti of the Southwest, p. 183-184) give adequate reason why this
taxon should probably not be placed within 0. pháéácantha. While the
spines are certainly reminiscent of the pháeácáiitha complex, the dry
spiny fruits of var. spinosibacca remain distinct- Our tetraploid counts
for this taxon also differentiate it from the phaeacantha complex. I
currently believe that this is a good species by itself.
03888584