Thymophylla pentachaeta var. pentachaeta

Treatment appears in FNA Volume 21. Treatment on page 242.
Revision as of 23:34, 29 July 2020 by imported>Volume Importer
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Leaves 6–25 mm overall, lobes (3–) 9–11, subequal. Peduncles 60–100 mm. Calyculi of 3–5 bractlets. Involucres obconic to campanulate, 4.3–6 × 4–5 mm. Phyllaries 12–21, margins of outer distinct ca. 1/2 their lengths, abaxial faces usually glabrescent or glabrous, rarely hairy. Disc-florets 50–80. Pappi of 5 erose scales alternating with 5, 1–3-aristate scales. 2n = 32.


Phenology: Flowering early spring and late summer, following rains.
Habitat: Calcareous outcrops and derived soils, scrublands or deserts, roadways, other disturbed sites
Elevation: 50–700+ m

Discussion

Selected References

None.

Lower Taxa

None.
hairy +, glabrous +  and glabrescent +
not tailed +, rounded +  and obtuse +
darkened +  and pale +
connate +  and distinct +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
spiciform +, racemiform +, paniculiform +  and corymbiform +
indeterminate +  and determinate +
John L. Strother +
(de Candolle) Small +
decurrent +
Hymenatherum pentachaetum +
compound +  and simple +
0.6 cm6 mm <br />0.006 m <br /> (2.8 cm28 mm <br />0.028 m <br />) +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
yellow +  and orange-yellow +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
strigillose +  and glabrous +
cylindro-clavate +, obconic +  and obpyramidal +
fertile +  and bisexual +
fertile +  and bisexual +
Tex. +  and Mexico +
50–700+ m +
tomentose +, puberulent +, lanate +, floccose +, canescent +, arachnose +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Calcareous outcrops and derived soils, scrublands or deserts, roadways, other disturbed sites +
cymiform +, corymbiform +, discoid +  and radiate +
singly +  and radiant +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
0.2 cm2 mm <br />0.002 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
0.43 cm4.3 mm <br />0.0043 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
obconic;campanulate +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
sessile +  and petiolate +
0.6 cm6 mm <br />0.006 m <br /> (?) +  and 2.5 cm25 mm <br />0.025 m <br /> (?) +
linear +  and filiform +
subequal +
dentate to pinnatifid or palmatifid +  and entire +
1/5;lengths +
2-carpellate +
persistent +
of 10(-20) distinct scales +  and coroniform +
glabrous +  and puberulent +
6 cm60 mm <br />0.06 m <br /> (10 cm100 mm <br />0.1 m <br />) +
Flowering early spring and late summer, following rains. +
12 +  and 21 +
Fl. S.E. U.S., +
bearing subulate enations +, hairy +  and bristly +
pitted +  and smooth +
alternating +
distinct +
1-3-aristate +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
exalbuminous +
Illustrated +
spreading +  and erect +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Dyssodia pentachaeta +
Thymophylla pentachaeta var. pentachaeta +
Thymophylla pentachaeta +
variety +
cylindric +
toothed +  and entire +
15 cm150 mm <br />0.15 m <br /> (25 cm250 mm <br />0.25 m <br />) +
less grayish +  and green +
glabrous +, glabrescent +, usually puberulent +  and canescent +
0 cm0 mm <br />0 m <br /> (15 cm150 mm <br />0.15 m <br />) +
15 cm150 mm <br />0.15 m <br /> (25 cm250 mm <br />0.25 m <br />) +
less grayish;green +
glabrous +, glabrescent +, usually puberulent +  and canescent +