Townsendia texensis

Larsen

Ann. Missouri Bot. Gard. 14: 15, plate 3. 1927.

Endemic
Treatment appears in FNA Volume 20. Treatment on page 196. Mentioned on page 194.

Biennials (sometimes persisting), 15–25+ cm. Stems decumbent to erect; internodes 5–20+ mm, strigose. Leaves basal and cauline, blades oblanceolate to lance-linear, 20–45 (–60+) × 2–4 (–6+) mm, not fleshy, faces ± strigose. Heads at tips of stems (usually surpassed by leaves). Involucres ± campanulate to hemispheric, 12–15 (–20+) mm diam. Phyllaries 40–44 in 4–5+ series, the longer ± lanceolate, 5–9+ mm (l/w = 2.5–5), apices acute to attenuate (soft, not apiculate), abaxial faces strigose. Ray-florets 25–40+; corollas white or purplish adaxially, laminae 9–18 mm, abaxially usually glabrous, sometimes glandular-puberulent. Disc-florets 80–120+; corollas 3.5–5 mm. Cypselae 3.5–4 mm, faces hairy, hair tips glochidiform; pappi persistent; on ray cypselae ± 20 lanceolate to subulate scales 0.5–0.8 (–2+) mm; on disc cypselae 16–24 subulate to setiform scales 5 mm. 2n = 18.


Phenology: Flowering May–Jun.
Habitat: Cherts, limestone slopes
Elevation: 1200 m

Discussion

Selected References

None.

Lower Taxa

None.

"broader" is not a number.

... more about "Townsendia texensis"
not tailed +, rounded +  and obtuse +
distinct +
acute;attenuate +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
spiciform +, racemiform +, paniculiform +  and corymbiform +
indeterminate +  and determinate +
John L. Strother +
Larsen +
decurrent +
4.5 cm45 mm <br />0.045 m <br /> (6 cm60 mm <br />0.06 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
2 cm20 mm <br />0.02 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
oblanceolate;lance-linear +
not fleshy +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
rugulose +  and muricate +
barbellulate +  and barbellate +
not 2-lipped +  and actinomorphic +
purplish +  and white +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
beaked +, 2-ribbed +  and 5-ribbed +
obovate +  and oblanceolate +
fertile +  and bisexual +
fertile +  and bisexual +
Okla. +  and Tex. +
1200 m +
hairy +  and strigose +
scabrellous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Cherts, limestone slopes +
glochidiform +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
0.5 cm5 mm <br />0.005 m <br /> (2 cm20 mm <br />0.02 m <br />) +
1.2 cm12 mm <br />0.012 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
less campanulate;hemispheric +
glandular-puberulent +  and glabrous +
0.9 cm9 mm <br />0.009 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
cauline +  and basal +
spreading;erect +
lance-deltate +  and lance-oblong +
dentate to pinnatifid +  and entire +
lobed +, toothed +  and entire +
2-carpellate +
persistent +
Flowering May–Jun. +
lanceolate +
0.5 cm5 mm <br />0.005 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
Ann. Missouri Bot. Gard. +
bearing subulate enations +, hairy +  and bristly +
pitted +  and smooth +
convex;flat +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
16 +  and 24 +
subulate +  and setiform +
5 cm50 mm <br />0.05 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
exalbuminous +
decumbent +  and erect +
villous +, strigose +, strigillose +, sericeous +, piloso-strigose +, piloso-hirsute +, pilose +, hispidulous +, glabrous +  and glabrate +
strigoso-scabrellous +  and scabrellous +
lance-deltate +  and attenuate +
appendaged +  and truncate +
papillate +  and smooth +
Compositae +
Townsendia texensis +
Townsendia +
species +
15 cm150 mm <br />0.15 m <br /> (25 cm250 mm <br />0.25 m <br />) +
tree +, shrub +  and subshrub +