Gutierrezia texana var. texana

Treatment appears in FNA Volume 20. Treatment on page 92. Mentioned on page 91.

Involucres narrowly obconic, 2–3 mm diam. Disc-florets 7–13. Cypselae evenly strigose, hairs not obscuring faces; pappi of continuous or scaly crowns less than 0.1 mm. 2n = 8, 10, 16.


Phenology: Flowering Jul–Sep(–Oct).
Habitat: Rocky prairies, grasslands, roadsides, over clays and loams, less commonly sand
Elevation: 0–700 m

Distribution

V20-175-distribution-map.gif

Ark., Ill., La., Mo., Okla., Tex., Mexico (Coahuila), Mexico (where rare)

Discussion

Selected References

None.

Lower Taxa

None.

"[" is not declared as a valid unit of measurement for this property."]" is not declared as a valid unit of measurement for this property.

16 +, 10 +  and 8 +
hirtellous +, hispidulous +  and glabrous +
not tailed +, rounded +  and obtuse +
distinct +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
spiciform +, racemiform +, paniculiform +  and corymbiform +
indeterminate +  and determinate +
Guy L. Nesom +
(de Candolle) Torrey & A. Gray +
decurrent +
white-indurate +
Hemiachyris texana +
compound +  and simple +
linear;lanceolate or spatulate +
rugulose +  and muricate +
barbellulate +  and barbellate +
3-nerved +  and 1-nerved +
not 2-lipped +  and actinomorphic +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
scaly +  and continuous +
0 cm0 mm <br />0 m <br /> (0.01 cm0.1 mm <br />1.0e-4 m <br />) +
beaked +, 2-ribbed +  and 5-ribbed +
not compressed +, cylindric +  and clavate +
fertile +  and bisexual +
fertile +  and bisexual +
Ark. +, Ill. +, La. +, Mo. +, Okla. +, Tex. +, Mexico (Coahuila) +  and Mexico (where rare) +
0–700 m +
resinous +
gland-dotted +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Rocky prairies, grasslands, roadsides, over clays and loams, less commonly sand +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
petiolate +  and sessile +
cauline +  and basal +
short-deltate +
2-carpellate +
erose-margined +
persistent +
of 5-10 whitish +  and coroniform +
Flowering Jul–Sep(–Oct). +
3-nerved +  and 1-nerved +
ovate +  and lanceolate +
Fl. N. Amer. +
bearing subulate enations +, hairy +  and bristly +
spreading-erect +
oblong +  and ovate or obovate +
exalbuminous +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
erect +  and ascending +
appendaged +  and truncate +
papillate +  and smooth +
Xanthocephalum texanum +
Gutierrezia texana var. texana +
Gutierrezia texana +
variety +
80 cm800 mm <br />0.8 m <br /> (100 cm1,000 mm <br />1 m <br />) +
10 cm100 mm <br />0.1 m <br /> (80 cm800 mm <br />0.8 m <br />) +