Conyza ramosissima

Cronquist

Bull. Torrey Bot. Club 70: 632. 1943.

Endemic
Basionym: Erigeron divaricatus Michaux Fl. Bor.-Amer. 2: 123. 1803 (as divaricatum),
Treatment appears in FNA Volume 20. Treatment on page 349. Mentioned on page 348.

Plants spreading, 5–25+ cm, branched throughout (stems usually ± strigose). Leaves: faces closely strigose; proximal blades narrowly spatulate to linear, 5–15+ × 0.5–2 (–3+) mm; distal similar, smaller, narrower. Heads in loose, corymbiform arrays or borne ± singly. Involucres 3–4 mm. Phyllaries glabrous or glabrate; outer greenish to purplish, lanceolate, shorter, sparsely strigose; inner stramineous to purplish, linear-attenuate (more scarious). Receptacles 0.7–1 mm diam. in fruit. Pistillate florets 20–30; corollas ± equaling or surpassing styles, laminae 0.3–0.8 mm. Disc-florets 3–8. Cypselae pale tan, 1–1.5 mm, faces sparsely strigillose or glabrous; pappi of 20–30, tawny to pinkish bristles 2–2.5 mm. 2n = 18.


Phenology: Flowering late spring–early fall.
Habitat: Disturbed sites, usually in heavy clay soils
Elevation: 100–800 m

Distribution

V20-803-distribution-map.gif

Ala., Ark., Ill., Ind., Iowa, Kans., La., Minn., Miss., Mo., Nebr., N.Mex., N.Dak., Ohio, Okla., Pa., S.Dak., Tex., Wis.

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Conyza ramosissima"
strigose +, hispidulous +, hirsutulous +  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 +
John L. Strother +
Cronquist +
decurrent +
Erigeron divaricatus +
compound +  and simple +
mostly lanceolate;oblanceolate or linear +
rugulose +  and muricate +
barbellulate +  and barbellate +
0.2 cm2 mm <br />0.002 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
not 2-lipped +  and actinomorphic +
yellowish +, ochroleucous +, white +  and purplish +
20 +  and 150 +
surpassing styles +  and equaling +
beaked +, 2-ribbed +  and 5-ribbed +
oblong +  and elliptic +
fertile +  and bisexual +
fertile +  and bisexual +
Ala. +, Ark. +, Ill. +, Ind. +, Iowa +, Kans. +, La. +, Minn. +, Miss. +, Mo. +, Nebr. +, N.Mex. +, N.Dak. +, Ohio +, Okla. +, Pa. +, S.Dak. +, Tex. +  and Wis. +
100–800 m +
glabrous +, strigillose +  and strigose +
winged +  and beaked +
dispersed +
Disturbed sites, usually in heavy clay soils +
corymbiform +, paniculiform +, disciform +  and radiate +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
stramineous +  and purplish +
linear-attenuate +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
sessile +  and petiolate +
cauline +  and basal +
spreading;erect +
deltate +
dentate to pinnatifid +  and entire +
entire +, toothed +  and lobed +
membranous +
greenish +  and purplish +
2-carpellate +
tawny +  and pinkish +
persistent +
Flowering late spring–early fall. +
glabrate +  and glabrous +
lanceolate +  and linear +
unequal +  and larger +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
narrowly spatulate +  and linear +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Bull. Torrey Bot. Club +
styliferous +, neuter +  and pistillate +
bearing subulate enations +, hairy +  and bristly +
concave;usually flat;conic +
exalbuminous +
strigose +, strigillose +, hispidulous +, hispid +  and glabrous +
appendaged +  and truncate +
papillate +  and smooth +
Compositae +
Conyza ramosissima +
species +
120 cm1,200 mm <br />1.2 m <br /> (350 cm3,500 mm <br />3.5 m <br />) +
10 cm100 mm <br />0.1 m <br /> (120 cm1,200 mm <br />1.2 m <br />) +