Echinacea laevigata

(C. L. Boynton & Beadle) S. F. Blake

J. Wash. Acad. Sci. 19: 273. 1929.

Common names: Smooth purple coneflower
EndemicConservation concern
Basionym: Brauneria laevigata C. L. Boynton & Beadle in J. K. Small, Fl. S.E. U.S., 1261, 1340. 1903
Synonyms: Echinacea purpurea var. laevigata (C. L. Boynton & Beadle) Cronquist
Treatment appears in FNA Volume 21. Treatment on page 90. Mentioned on page 88.

Plants 35–110 cm (roots fusiform, ± branched). Herbage (glaucous) mostly glabrous (leaves sometimes sparsely hairy abaxially). Stems green. Basal leaves: petioles 4–26 cm; blades 3-nerved or 5-nerved, elliptic to lanceolate-ovate, 10–50 × 3–6.5 cm, bases broadly cuneate to rounded, margins usually serrate or dentate. Peduncles 10–40 cm. Phyllaries lanceolate, 3–15 × 2–3 (–5) mm. Receptacles: paleae 7–12 mm, tips orange to brownish purple-tipped, often incurved, sharp-pointed. Ray corollas pink to purple, laminae spreading to reflexed, 35–80 × 3–7 mm, sparsely hairy abaxially. Discs conic to spheric, 15–30 × 15–40 mm. Disc corollas 8–9 mm, lobes purple to greenish (usually erect). Cypselae tan, disc cypselae tan, banded, 4–5 mm, usually glabrous (ray cypselae sometimes hairy on angles); pappi to 1.2 mm (teeth unequal). 2n = 22.


Phenology: Flowering late spring–early summer.
Habitat: Well-drained soils, open wooded hillsides, fields
Elevation: 100–1100 m

Discussion

Of conservation concern.

Echinacea laevigata was historically present in Pennsylvania but is now thought to be extirpated; its occurrence in Maryland has not been confirmed; reports of its presence in Alabama and Arkansas are most likely based on misidentifications. It is in the Center for Plant Conservation’s National Collection of Endangered Plants.

Selected References

None.

Lower Taxa

None.

"broader" is not a number.

... more about "Echinacea laevigata"
not tailed +, rounded +  and obtuse +
connate +  and distinct +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
spiciform +, racemiform +, paniculiform +, corymbiform +  and cymiform +
indeterminate +  and determinate +
Lowell E. Urbatsch +, Kurt M. Neubig +  and Patricia B. Cox +
(C. L. Boynton & Beadle) S. F. Blake +
bristlelike +
coroniform +
broadly cuneate +  and rounded +
Brauneria laevigata +
5-nerved +  and 3-nerved +
10 cm100 mm <br />0.1 m <br /> (50 cm500 mm <br />0.5 m <br />) +
elliptic;lanceolate-ovate +
3cm;6.5cm +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
Smooth purple coneflower +
yellow +, reddish purple +, greenish +, pinkish +, dark purple +  and pale-pink white or yellow +
hairy +  and glabrous +
4-angled +  and 3-angled +
fertile +  and bisexual +
0.8 cm8 mm <br />0.008 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
banded +  and tan +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
fertile +  and bisexual +
1.5 cm15 mm <br />0.015 m <br /> (3 cm30 mm <br />0.03 m <br />) +
conic;spheric +
15mm;40mm +
Ga. +, N.C. +, Pa. +, S.C. +  and Va. +
100–1100 m +
glabrous +, glabrate +  and hairy +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Well-drained soils, open wooded hillsides, fields +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
1.2 cm12 mm <br />0.012 m <br /> (4 cm40 mm <br />0.04 m <br />) +
crateriform;hemispheric +
35mm;80mm +
spreading +  and reflexed +
cauline +  and basal +
purple;greenish +
triangular +
dentate +  and serrate +
2-carpellate +
0.7 cm7 mm <br />0.007 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
persistent +
coroniform +
0 cm0 mm <br />0 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
10 cm100 mm <br />0.1 m <br /> (40 cm400 mm <br />0.4 m <br />) +
4 cm40 mm <br />0.04 m <br /> (26 cm260 mm <br />0.26 m <br />) +
Flowering late spring–early summer. +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
15 +  and 50 +
unequal +  and subequal +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
J. Wash. Acad. Sci. +
sterile +  and fertile +
pink +  and purple +
bearing subulate enations +, hairy +  and bristly +
hemispheric;conic +
exalbuminous +
Endemic +  and Conservation concern +
branched +  and unbranched +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Echinacea purpurea var. laevigata +
Echinacea laevigata +
Echinacea +
species +
orange to brownish purple-tipped +
sharp-pointed +
cylindric +
shorter to longer than campanulate +
toothed +  and entire +
0 cm0 mm <br />0 m <br /> (140 cm1,400 mm <br />1.4 m <br />) +