Gaillardia coahuilensis

B. L. Turner

SouthW. Naturalist 21: 539. 1977.

Treatment appears in FNA Volume 21. Treatment on page 424. Mentioned on page 422, 425.

Annuals, 20–80 cm. Leaves basal and cauline; petiolar bases 0–3+ cm; blades ovate to lanceolate, 3–8 cm × 5–25 mm, (bases of distal usually clasping) margins of proximal often lobed or toothed, of distal usually entire, rarely lobed, faces sparsely hispidulous. Peduncles 5–20 cm. Phyllaries 14–22, lanceolate-acuminate to lanceolate-attenuate, 5–12+ mm, closely hispidulous strigillose, not ciliate with jointed hairs. Receptacular setae 2–4 mm. Ray-florets 5–13; corollas proximally reddish or orange to yellow, distally orange to yellow, 10–20 mm. Disc-florets 40–100+; corollas proximally yellow or reddish, distally reddish or yellow, tubes 0.6–1 mm, throats campanulate, 3–4 mm, lobes deltate, 1–1.2 mm, jointed hairs to 0.3 mm. Cypselae obpyramidal, 1–3 mm, hairs 1–3 mm, inserted at bases; pappi of 8–9 ovate to lanceolate, aristate scales 2–5+ mm (scarious bases 1–2.5 × 0.4–1 mm). 2n = 34.


Phenology: Flowering Apr–Jun.
Habitat: Calcareous soils
Elevation: 300–1200+ m

Discussion

Specimens of Gaillardia coahuilensis were earlier treated as members of G. mexicana A. Gray, a Mexican species. Plants of G. coahuilensis seem much closer to G. pulchella than to G. mexicana in most attributes and might be included within the circumscription of G. pulchella but for the short hairs on the corollas.

Selected References

None.

Lower Taxa

None.
... more about "Gaillardia coahuilensis"
not tailed +, rounded +  and obtuse +
connate +  and distinct +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
spiciform +, racemiform +, paniculiform +  and corymbiform +
indeterminate +  and determinate +
John L. Strother +
B. L. Turner +
decurrent +
compound +  and simple +
3 cm30 mm <br />0.03 m <br /> (8 cm80 mm <br />0.08 m <br />) +
ovate;lanceolate +
5mm;25mm +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
yellow +, reddish +, orange +  and yellow distally orange +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
obpyramidal +
fertile +  and bisexual +
fertile +  and bisexual +
Tex. +  and Mexico (Coahuila) +
300–1200+ m +
hispidulous +
scabrellous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Calcareous soils +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
discoid +  and radiate +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
0.9 cm9 mm <br />0.009 m <br /> (2 cm20 mm <br />0.02 m <br />) +
hemispheric;nearly rotate +
sessile +  and petiolate +
cauline +  and basal +
deltate +
lobed +  and toothed +
connate +  and distinct +
ovate +, oblong +, oblanceolate +, linear +, lanceolate +  and elliptic +
unequal +  and subequal +
2-carpellate +
persistent +
5 cm50 mm <br />0.05 m <br /> (20 cm200 mm <br />0.2 m <br />) +
0 cm0 mm <br />0 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Flowering Apr–Jun. +
strigillose +  and hispidulous +
14 +  and 22 +
0.5 cm5 mm <br />0.005 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
SouthW. Naturalist +
styliferous +, pistillate +  and neuter +
sterile +  and fertile +
bearing subulate enations +, hairy +  and bristly +
pitted +  and smooth +
convex;hemispheric +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
8 +  and 9 +
aristate +, ovate +  and lanceolate +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
exalbuminous +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Compositae +
Gaillardia coahuilensis +
Gaillardia +
species +
campanulate +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
much shorter than ampliate +
campanulate +  and cylindric or urceolate +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
entire +  and toothed +
20 cm200 mm <br />0.2 m <br /> (80 cm800 mm <br />0.8 m <br />) +