Flora of North America species comparison

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Euphorbia austrotexana var. carrii
Photo is of parent taxon
Stems

6–13 cm.
Leaves

blade linear to slightly lanceolate, apex acute.
Seeds

1.4–1.5 × 1–1.1 mm, surface with irregular and not obviously concave depressions.
Dichasial

bracts broadly ovate-lanceolate, base rounded.

Euphorbia austrotexana var. carrii
Phenology Flowering and fruiting spring.
Habitat Sandy soils.
Elevation 0–200.
Distribution
from FNA
TX
Discussion

Variety carrii is restricted to Jim Hogg and Kenedy counties, Texas; M. H. Mayfield (2013) indicated that populations are confined to the South Texas Sand Sheet and apparently occur in the deepest sand areas of the region. B. L. Turner (2011) mistook collections of this taxon for the introduced, Old World E. exigua. The two species are not closely related and can be readily distinguished based on seed morphology.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 12, p. 299.
Parent taxa Euphorbiaceae > Euphorbia > subg. Esula > Euphorbia austrotexana
Sibling taxa
E. austrotexana var. austrotexana
Name authority Mayfield: J. Bot. Res. Inst. Texas 7: 636, fig. 2[row 3, center]. (2013)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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