Townsendia annua

Beaman

Contr. Gray Herb. 183: 132, plate 22, fig. 4. 1957.

Endemic
Treatment appears in FNA Volume 20. Treatment on page 198. Mentioned on page 194.

Annuals, 3–12 (–16+) cm. Stems decumbent to erect; internodes (1–) 3–12 (–18+) mm, strigose. Leaves mostly cauline, blades spatulate to narrowly oblanceolate, 8–12 (–25+) × 1–3 (–5+) mm, not fleshy, faces ± strigillose. Heads at tips of stems. Involucres ± hemispheric, 8–12 (–16) mm diam. Phyllaries 26–30+ in 3+ series, the longer ± lanceovate to oblanceolate, 5–6+ mm (l/w = 2.5–5), apices acute, abaxial faces strigillose to glabrate. Ray-florets 12–30+; corollas white or pinkish to lavender adaxially, laminae 5–8+ mm, glabrous abaxially. Disc-florets 60–120+; corollas 2.5–3.5+ mm. Cypselae 2–3 mm, faces hairy, hair tips glochidiform; pappi persistent; on ray cypselae ± 10 lanceolate scales 0.2–0.5 (–1) mm; on disc cypselae 20+ subulate scales 1–2.5 (–4) mm. 2n = 18.


Phenology: Flowering Apr–Jun(–Oct).
Habitat: Sandy soils, alkaline flats, red clays
Elevation: 1200–2100 m

Distribution

V20-433-distribution-map.gif

Ariz., Colo., N.Mex., Tex., Utah, Wyo.

Discussion

The type of Townsendia annua may prove to be conspecific with that of T. strigosa.

Selected References

None.

Lower Taxa

None.

"broader" is not a number.

... more about "Townsendia annua"
strigillose +  and glabrate +
not tailed +, rounded +  and obtuse +
distinct +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
spiciform +, racemiform +, paniculiform +  and corymbiform +
indeterminate +  and determinate +
John L. Strother +
Beaman +
decurrent +
1.2 cm12 mm <br />0.012 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
spatulate;narrowly oblanceolate +
1mm;3mm +
rugulose +  and muricate +
barbellulate +  and barbellate +
not 2-lipped +  and actinomorphic +
pinkish +  and lavender +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
beaked +, 2-ribbed +  and 5-ribbed +
obovate +  and oblanceolate +
fertile +  and bisexual +
fertile +  and bisexual +
Ariz. +, Colo. +, N.Mex. +, Tex. +, Utah +  and Wyo. +
1200–2100 m +
hairy +  and strigillose +
scabrellous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Sandy soils, alkaline flats, red clays +
glochidiform +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
1.2 cm12 mm <br />0.012 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
hemispheric +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
spreading;erect +
lance-deltate +  and lance-oblong +
dentate to pinnatifid +  and entire +
lobed +, toothed +  and entire +
2-carpellate +
persistent +
Flowering Apr–Jun(–Oct). +
less lanceovate +  and oblanceolate +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Contr. Gray Herb. +
bearing subulate enations +, hairy +  and bristly +
pitted +  and smooth +
convex;flat +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
12 +  and 35 +
subulate +  and lanceolate +
0.1 cm1 mm <br />0.001 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
exalbuminous +
decumbent +  and erect +
strigoso-scabrellous +  and scabrellous +
lance-deltate +  and attenuate +
appendaged +  and truncate +
papillate +  and smooth +
Compositae +
Townsendia annua +
Townsendia +
species +
12 cm120 mm <br />0.12 m <br /> (16 cm160 mm <br />0.16 m <br />) +
3 cm30 mm <br />0.03 m <br /> (12 cm120 mm <br />0.12 m <br />) +
tree +, shrub +  and subshrub +