Gymnosperma glutinosum

(Sprengel) Lessing

Syn. Gen. Compos., 194. 1832.

Common names: Gumhead
Illustrated
Basionym: Selloa glutinosa Sprengel Novi Provent., 36. 1818
Treatment appears in FNA Volume 20. Treatment on page 95.

Leaves mostly 25–50 mm, relatively even in lengths to heads. Involucres 3–3.8 mm. Ray corollas 2–3 mm. Cypselae 1–1.4 mm. 2n = 16.


Phenology: Flowering (Apr–)Jun–Nov(–Dec).
Habitat: Gravelly, sandy, or loamy flats, rocky slopes, crevices and ledges, streambeds, creosote bush to pinyon-juniper and pine-oak-maple
Elevation: (300–)600–2300(–2700) m

Distribution

V20-184-distribution-map.gif

Ariz., N.Mex., Tex., Mexico (Chihuahua), Mexico (Coahuila), Mexico (Nuevo León), Mexico (Tamaulipas), Mexico (San Luis Potosí), Central America (Guatemala)

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 "Gymnosperma glutinosum"
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 +
(Sprengel) Lessing +
decurrent +
Selloa glutinosa +
compound +  and simple +
linear;narrowly lanceolate oblanceolate or elliptic +
rugulose +  and muricate +
barbellulate +  and barbellate +
Gumhead +
not 2-lipped +  and actinomorphic +
orange-yellow +  and yellow +
beaked +, 2-ribbed +  and 5-ribbed +
white-strigillose +
compressed +, terete +, fusiform +  and columnar +
fertile +  and bisexual +
fertile +  and bisexual +
Ariz. +, N.Mex. +, Tex. +, Mexico (Chihuahua) +, Mexico (Coahuila) +, Mexico (Nuevo León) +, Mexico (Tamaulipas) +, Mexico (San Luis Potosí) +  and Central America (Guatemala) +
(300–)600–2300(–2700) m +
gland-dotted +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Gravelly, sandy, or loamy flats, rocky slopes, crevices and ledges, streambeds, creosote bush to pinyon-juniper and pine-oak-maple +
corymbiform +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
cylindro-turbinate;elliptic-obovoid +
0.3 cm3 mm <br />0.003 m <br /> (0.38 cm3.8 mm <br />0.0038 m <br />) +
2.5 cm25 mm <br />0.025 m <br /> (?) +  and 5 cm50 mm <br />0.05 m <br /> (?) +
reflexing-coiling +
lanceolate +
2-carpellate +
coroniform +
Flowering (Apr–)Jun–Nov(–Dec). +
ovate +  and lanceolate +
Syn. Gen. Compos., +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
bearing subulate enations +, hairy +  and bristly +
concave;usually flat;conic +
exalbuminous +
Illustrated +
lanceolate +  and narrowly oblong-lanceolate +
appendaged +  and truncate +
papillate +  and smooth +
Compositae +
Gymnosperma glutinosum +
Gymnosperma +
species +
tubular-funnelform +
perennial +, biennial +  and annual +
150 cm1,500 mm <br />1.5 m <br /> (200 cm2,000 mm <br />2 m <br />) +