Symphyotrichum laeve var. purpuratum

(Nees) G. L. Nesom

Phytologia 77: 284. 1995.

Endemic
Basionym: Aster purpuratus Nees Gen. Sp. Aster., 118. 1832
Synonyms: Aster attenuatus Lindley Aster laevis var. purpuratus (Nees) A. G. Jones Symphyotrichum attenuatum
Treatment appears in FNA Volume 20. Treatment on page 510. Mentioned on page 508, 509.

Leaves mostly basal and proximal at flowering (cauline usually reduced), mostly linear, slightly auriculate-clasping, often more than 5 times as long as wide. Phyllaries strongly unequal, apical green zones diamond-shaped. 2n = 48.


Phenology: Flowering Sep–Oct.
Habitat: Dry, open places, prairies, open deciduous woods, mostly on coastal plains
Elevation: 20–100+ m

Distribution

V20-1137-distribution-map.gif

Ala., Ark., Ga., La., Miss., Tex.

Discussion

The range of var. purpuratum is more southern and western (Gulf Coastal Plains) than that of var. concinnum (mainly eastern Appalachians and Piedmont). Controversy surrounds the question of proper rank for this taxon. Semple suggests the rank of species. It is sometimes difficult to distinguish this variety from var. concinnum, from which it differs by its mostly basal leaves, basal and proximal leaves persistent and more linear, and often more compact arrays (A. Cronquist 1980). When subspecies are recognized under Symphyotrichum laeve, it is uncertain whether var. attenuatum would constitute a separate subspecies or be part of subsp. concinnum.

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 +
diamond--shaped +
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† +
(Nees) 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 purpuratus +
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 +
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 +
Ala. +, Ark. +, Ga. +, La. +, Miss. +  and Tex. +
20–100+ m +
glabrate +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Dry, open places, prairies, open deciduous woods, mostly on coastal plains +
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 +
proximal +  and basal +
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 Sep–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 attenuatus +, Aster laevis var. purpuratus +  and Symphyotrichum attenuatum +
Symphyotrichum laeve var. purpuratum +
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 +