Gutierrezia serotina

Greene

Pittonia 4: 57. 1899.

Common names: Late snakeweed
Endemic
Synonyms: Gutierrezia polyantha A. Nelson
Treatment appears in FNA Volume 20. Treatment on page 94. Mentioned on page 90.

Subshrubs, 15–30 cm. Stems glabrous. Leaves: basal absent at flowering; cauline blades 1-nerved, linear to filiform, 0.5–1 mm wide, reduced distally. Heads borne singly or (sessile in glomerate clusters of 3–5) in loose arrays. Involucres narrowly campanulate (lengths ± equaling diams.), 3–4 mm diam. Phyllary apices flat. Ray-florets 4–9; corollas yellow, 2.3–4 (–5.4) mm. Disc-florets (8–) 10–12 (–17). Cypselae 1–1.2 mm, faces densely strigoso-sericeous (hairs ± twisted, apically attenuate); pappi of 1–2 series of oblanceolate scales 0.5–1 mm. 2n = 8.


Phenology: Flowering Apr–May and/or Aug–Oct.
Habitat: Grasslands, Larrea flats
Elevation: 400–1200 m

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.

... more about "Gutierrezia serotina"
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 +
Greene +
decurrent +
white-indurate +
compound +  and simple +
linear;lanceolate or spatulate +
rugulose +  and muricate +
barbellulate +  and barbellate +
linear +  and filiform +
Late snakeweed +
not 2-lipped +  and actinomorphic +
0.4 cm4 mm <br />0.004 m <br /> (0.54 cm5.4 mm <br />0.0054 m <br />) +
0.23 cm2.3 mm <br />0.0023 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
beaked +, 2-ribbed +  and 5-ribbed +
not compressed +, cylindric +  and clavate +
fertile +  and bisexual +
fertile +  and bisexual +
400–1200 m +
resinous +
gland-dotted +
strigoso-sericeous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Grasslands, Larrea flats +
in loose arrays +  and singly +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
campanulate +
petiolate +  and sessile +
cauline +  and basal +
short-deltate +
2-carpellate +
erose-margined +
persistent +
of 5-10 whitish +  and coroniform +
Flowering Apr–May and/or Aug–Oct. +
3-nerved +  and 1-nerved +
ovate +  and lanceolate +
bearing subulate enations +, hairy +  and bristly +
oblanceolate +
exalbuminous +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
erect +  and ascending +
appendaged +  and truncate +
papillate +  and smooth +
Gutierrezia polyantha +
Gutierrezia serotina +
Gutierrezia +
species +
150 cm1,500 mm <br />1.5 m <br /> (200 cm2,000 mm <br />2 m <br />) +
perennial +  and annual +
10 cm100 mm <br />0.1 m <br /> (150 cm1,500 mm <br />1.5 m <br />) +