Euphorbia austrotexana var. austrotexana

IllustratedEndemicConservation concern
Treatment appears in FNA Volume 12. Treatment on page 299.
Revision as of 17:21, 29 July 2020 by imported>Volume Importer
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Stems 10–22 cm. Leaves: blade linear-oblanceolate, apex rounded. Dichasial bracts reniform-ovate to subdeltate-ovate, base truncate. Seeds 1.6–1.7 × 1.1–1.3 mm, surface with regular concave depressions. 2n = 26.


Phenology: Flowering and fruiting spring.
Habitat: Sandy soils.
Elevation: 200–300 m.

Discussion

Variety austrotexana is restricted to Atascosa, Bexar, and Wilson counties. According to M. H. Mayfield (2013), only five documented localities are known.

Selected References

None.

Lower Taxa

None.

"slightly shorter and wider" is not a number."connate" is not a number. "distinct" is not a number."connate" is not a number. "distinct" is not a number.

rounded +
Ricarda Riina +, Dmitry V. Geltman +, Jess A. Peirson +  and Paul E. Berry +
Mayfield +
obliquely truncate +  and rounded +
0.5 cm5 mm <br />0.005 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
linear-oblanceolate +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
not imbricate +
distinct +
reniform-ovate +  and subdeltate-ovate +
cymose +, branched +, unbranched +  and pleiochasial +
arranged +  and opposite +
additional;2;4 +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
3-lobed +  and ovoid-globose +
0.3 cm3 mm <br />0.003 m <br /> (0.32 cm3.2 mm <br />0.0032 m <br />) +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.07 cm0.7 mm <br />7.0e-4 m <br />) +
depressed-conic +  and reniform-ovate +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
rounded +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
shallow +  and deep +
200–300 m. +
pistillate +  and staminate +
0.2mm;0.4mm +
subtending +
crescent--shaped +
0.5mm +  and 0.6mm +
Sandy soils. +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.07 cm0.7 mm <br />7.0e-4 m <br />) +
axillary +  and terminal +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.11 cm1.1 mm <br />0.0011 m <br />) +
infundibular +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.09 cm0.9 mm <br />9.0e-4 m <br />) +
caducous +, deciduous +  and persistent +
bractlike +
palmate +  and pinnate +
toothed +  and entire +
0 cm0 mm <br />0 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
connate;distinct +
hairy +  and glabrous +
Flowering and fruiting spring. +
J. Bot. Res. Inst. Texas +
white;gray +
0.16 cm1.6 mm <br />0.0016 m <br /> (0.17 cm1.7 mm <br />0.0017 m <br />) +
ellipsoid +
0.11 cm1.1 mm <br />0.0011 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
Illustrated +, Endemic +  and Conservation concern +
free +, connate +  and distinct +
10 cm100 mm <br />0.1 m <br /> (22 cm220 mm <br />0.22 m <br />) +
herbaceous +  and woody +
deciduous +  and persistent +
connate +  and distinct +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (?) +  and 0.05 cm0.5 mm <br />5.0e-4 m <br /> (?) +
Galarhoeus +  and Tithymalus +
Euphorbia austrotexana var. austrotexana +
Euphorbia austrotexana +
variety +
1-3 times 2-branched +  and pleiochasial +
rounded +  and attenuate +
10 +, 9 +, 8 +, 7 +  and 6 +