Symphyotrichum laeve var. geyeri

(A. Gray) G. L. Nesom

Phytologia 77: 284. 1995.

Common names: Geyer’s aster
Basionym: Aster laevis var. geyeri A. Gray in A. Gray et al., Syn. Fl. N. Amer. 1(2): 183. 1884
Synonyms: Aster geyeri (A. Gray) Howell Aster laevis subsp. geyeri (A. Gray) Piper Aster laevis var. guadalupensis A. G. Jones
Treatment appears in FNA Volume 20. Treatment on page 509. Mentioned on page 503, 508.

Leaves lanceolate to ovate, conspicuously auriculate-clasping, less than 5 times as long as wide. Phyllaries unequal, apical green zones lanceolate. 2n = 48.


Phenology: Flowering (Jul–)Aug–Oct.
Habitat: Open, dry habitats, mixed- and tallgrass prairies, open pine forests, montane meadows, edges of aspen groves, edges of montane forests, clearings, roadsides
Elevation: 300–2400 m

Distribution

V20-1135-distribution-map.gif

Alta., B.C., Man., Ont., Sask., Yukon, Calif., Colo., Idaho, Mont., Nebr., Nev., N.Mex., N.Dak., S.Dak., Tex., Utah, Wash., Wyo., Mexico (Coahuila)

Discussion

The distribution of var. geyeri forms a continuous arc across the Canadian mixed-grass prairies and aspen parkland into the Northern Rockies, and south in a discontinuous manner in the Central Rockies and the Black Hills, to Guadalupe Peak, western Texas. It is disjunct in northern Coahuila, Mexico (G. L. Nesom 1993g). The species was recently reported for California (tentatively assigned to this variety), where possibly it has been introduced.

Selected References

None.

Lower Taxa

None.

"thick" is not a number."thick" is not a number.

not tailed +, rounded +  and obtuse +
auriculate-clasping +
crenate-serrate +  and entire +
2.5 cm25 mm <br />0.025 m <br /> (3 cm30 mm <br />0.03 m <br />) +
persistent +
distinct +
3 cm30 mm <br />0.03 m <br /> (20 cm200 mm <br />0.2 m <br />) +
crenate-serrate to serrulate +
subequal +
scarious +
10mm +  and 25mm +
usually triangular +  and linear +
usually deltate +  and lanceolate +
spiciform +, racemiform +, paniculiform +  and corymbiform +
indeterminate +  and determinate +
Luc Brouillet +, John C. Semple +, Geraldine A. Allen +, Kenton L. Chambers +  and Scott D. Sundberg† +
(A. Gray) G. L. Nesom +
sessile +, subsessile +  and petiolate +
crenate-serrate +  and entire +
15 cm150 mm <br />0.15 m <br /> (18 cm180 mm <br />0.18 m <br />) +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
persistent +
8 cm80 mm <br />0.08 m <br /> (15 cm150 mm <br />0.15 m <br />) +
rounded +, auriculate +  and attenuate +
crenate-serrate to serrulate +
indurate +
20mm;45mm +
Aster laevis var. geyeri +
sessile +, subsessile +  and petiolate +
15 cm150 mm <br />0.15 m <br /> (18 cm180 mm <br />0.18 m <br />) +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
persistent +
0.7 cm7 mm <br />0.007 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
lanceolate;linear +
crenate-serrate to serrulate +
reduced +
1mm;14mm +
rugulose +  and muricate +
linear-lanceolate +  and linear +
reduced +  and small +
barbellulate +  and barbellate +
sessile +  and petiolate +
Geyer’s aster +
not 2-lipped +  and actinomorphic +
yellow turning purplish red +, white +, usually pale +  and dark blue or purple +
at maturity , more or less ampliate , tubes usually shorter +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.61 cm6.1 mm <br />0.0061 m <br />) +
beaked +, 2-ribbed +  and 5-ribbed +
purple +  and brown +
strigillose +  and glabrous +
compressed +  and oblong-obovoid +
fertile +  and bisexual +
fertile +  and bisexual +
Alta. +, B.C. +, Man. +, Ont. +, Sask. +, Yukon +, Calif. +, Colo. +, Idaho +, Mont. +, Nebr. +, Nev. +, N.Mex. +, N.Dak. +, S.Dak. +, Tex. +, Utah +, Wash. +, Wyo. +  and Mexico (Coahuila) +
300–2400 m +
glabrate +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Open, dry habitats, mixed- and tallgrass prairies, open pine forests, montane meadows, edges of aspen groves, edges of montane forests, clearings, roadsides +
disciform +  and radiate +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
0.7 cm7 mm <br />0.007 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
campanulate;cylindro-campanulate +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
1.13 cm11.3 mm <br />0.0113 m <br /> (1.46 cm14.6 mm <br />0.0146 m <br />) +
7.2mm;11.3mm +
2 (?) +  and 5 (?) +
1.5mm;2.5mm +
sessile +  and petiolate +
auriculate-clasping +
cauline +  and basal +
lanceolate;ovate +
fleshy +  and firm +
decurrent +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
reflexed;spreading;erect +
triangular +
entire +, crenate-serrate +  and serrulate +
2.5 cm25 mm <br />0.025 m <br /> (3 cm30 mm <br />0.03 m <br />) +
persistent +
30mm;200mm +
scabridulous +
obtuse +, acute +  and obtuse or rounded +
crenate-serrate to serrulate +
10mm +  and 25mm +
2-carpellate +
tawny +  and red or rose-tinged +
persistent +
25 +  and 40 +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
puberulent +, glabrous +  and glaucous +
0.2 cm2 mm <br />0.002 m <br /> (6 cm60 mm <br />0.06 m <br />) +
Flowering (Jul–)Aug–Oct. +
oblanceolate +, linear-lancolate +, lanceolate +  and oblong-lanceolate +
styliferous +, neuter +  and pistillate +
bearing subulate enations +, hairy +  and bristly +
flat;slightly convex +
exalbuminous +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.1mm;0.2mm +
branched +  and simple +
1 +  and 5 +
appendaged +  and truncate +
papillate +  and smooth +
Aster geyeri +, Aster laevis subsp. geyeri +  and Aster laevis var. guadalupensis +
Symphyotrichum laeve var. geyeri +
Symphyotrichum laeve +
variety +
funnelform-campanulate +  and cylindric +
ampliate +
70 cm700 mm <br />0.7 m <br /> (120 cm1,200 mm <br />1.2 m <br />) +
20 cm200 mm <br />0.2 m <br /> (70 cm700 mm <br />0.7 m <br />) +
tree +, shrub +  and subshrub +
mostly diamond-shaped +  and more or less lanceolate +