Glebionis segetum

(Linnaeus) Fourreau

Ann. Soc. Linn. Lyon, n. s. 17: 90. 1869.

Common names: Corn marigold
IntroducedIllustrated
Basionym: Chrysanthemum segetum Linnaeus Sp. Pl. 2: 889. 1753
Synonyms: Xantophtalmum segetum (Linnaeus) Schultz-Bipontinus
Treatment appears in FNA Volume 19. Treatment on page 555.

Leaf-blades oblong to obovate or spatulate, 25–65+ × 8–25+ mm, coarsely 1-pinnate or not lobed, ultimate margins dentate or entire. Ray corollas golden yellow, laminae oblong-ovate, 8–20 mm. Ray cypselae weakly triquetrous, 2.5–3 mm, obscurely, if at all, winged, lateral faces 2-ribbed, abaxial faces 3-ribbed; disc cypselae ± compressed-columnar, 2–3 mm, 10-ribbed, not winged. 2n = 18.


Phenology: Flowering Apr–Aug(–Oct).
Habitat: Disturbed sites
Elevation: 0–100 m

Distribution

V19-969-distribution-map.gif

Introduced; Ala., Alaska, Calif., Conn., La., Maine, Mass., N.Y., N.C., Ohio, Oreg., Pa., S.C., Eurasia, n Africa

Discussion

Selected References

None.

Lower Taxa

None.

"broader" is not a number.

... more about "Glebionis segetum"
not tailed +  and obtuse +
scarious +
spiciform +, racemiform +, paniculiform +  and corymbiform +
indeterminate +  and determinate +
John L. Strother +
(Linnaeus) Fourreau +
decurrent +
Chrysanthemum segetum +
compound +  and simple +
lobed;obovate;oblong +
Corn marigold +
zygomorphic +, actinomorphic +  and (3-)5-merous +
yellow +  and paler +
winged +  and monomorphic +
obcompressed +, compressed +, 3-angled +, columnar +  and prismatic +
fertile +  and bisexual +
compressed-columnar +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
fertile +  and bisexual +
Ala. +, Alaska +, Calif. +, Conn. +, La. +, Maine +, Mass. +, N.Y. +, N.C. +, Ohio +, Oreg. +, Pa. +, S.C. +, Eurasia +  and n Africa +
0–100 m +
gland-dotted +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Disturbed sites +
in 2s +  and singly +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
compressed-prismatic +  and columnar +
1.5 cm15 mm <br />0.015 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
hemispheric +
oblong-ovate +
0.8 cm8 mm <br />0.008 m <br /> (2 cm20 mm <br />0.02 m <br />) +
2.5 cm25 mm <br />0.025 m <br /> (6.5 cm65 mm <br />0.065 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
sessile +  and petiolate +
deltate +
entire +  and dentate +
2-carpellate +
persistent +
Flowering Apr–Aug(–Oct). +
25 +  and 60 +
subequal +  and unequal +
Ann. Soc. Linn. Lyon, n. s. +
triquetrous +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
bearing subulate enations +, hairy +  and bristly +
convex;hemispheric +
exalbuminous +
Introduced +  and Illustrated +
erect +  and ascending +
appendaged +  and truncate +
papillate +
Xantophtalmum segetum +
Glebionis segetum +
Glebionis +
species +
cylindric +
30 cm300 mm <br />0.3 m <br /> (80 cm800 mm <br />0.8 m <br />) +
10 cm100 mm <br />0.1 m <br /> (30 cm300 mm <br />0.3 m <br />) +
shrub +  and subshrub +