Euphorbia capitellata Engelm.

• Region

  North America

• Country

  Mexico

• State/Province

  Baja California Sur

• Locality

  Mesa del Potrero de San Javier (northeast of Misión San Javier)

• Elevation

  Alt. 800 - 850 m. (2625 - 2789 ft.)

• Coordinates

  25.87, -111.542

• Location Notes

  [Mexico & Central America]

• Distribution

  Map all specimens of this taxon

Herbarium of the University of California, Berkeley
COLLECTOR’S NOTE. Mesa del Potrero de San Javier is an
extensive upland varying from 800 m. at the western edge to
ca. 850 m. at the crest. It is densely paved with volcanic rock
and bears only scattered shrubby vegetation, mostly along rocky
outcrops: Acacia Goldmanii, Erythrinaflabelliformis, Prosopis
juliflora, Cercidium praecox, Bursera laxiflora, Jatropha cine-
rea, and Fouquieria Diguetii. Following heavy summer rains,
however, the rock pavement was obscured by a knee-high
growth of annuals. Amoreuxia palmatifida is abundant in the
heavy adobe soil. The steep south- and west-facing slopes have
a moderate cover of Bursera odorata, B. microphylla, Jatropha
cuneata, Fouquieria Diguetii, Pachycereus, Lemaireocereus
Thurberi, and Ruellia peninsularis.
CALIFORNIA ACADEMY OF SCIENCES
BOTANICAL EXPLORATIONS IN BAJA CALIFORNIA
SPONSORED BY THE BELVEDERE SCIENTIFIC FUND
BAJA CALIFORNIA SUR, MEXICO
Sierra de la Giganta
Chamaesyce capitel 1 ata (Engelm.) Millsp,
Det. M. J. Huft, 1983
Ascending, annual, or perhaps longer-lived;
glands red, the margins broad, entire, -white*
Near crest of mesa*
Mesa del Potrero de San Javier (northeast of Misión San
Javier).
Altitude ca. 800-850 m.
ca. Lat. 250 52' N., long. iii0321/2/W.
Annetta Carter 1$87	20 September 1965
04020494