Echinacea angustifolia

de Candolle in A. P. de Candolle and A. L. P. P. de Candolle

in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 5: 554. 1836.

Common names: Narrow-leaved purple coneflower blacksamson echinacea
Endemic
Synonyms: Echinacea angustifolia var. strigosa McGregor
Treatment appears in FNA Volume 21. Mentioned on page 89.

Plants to 70 cm (roots usually fusiform, ± branched). Herbage moderately to densely hairy (induments relatively harsh, hairs spreading, ca. 1–2 mm). Stems mostly green to purplish. Basal leaves: petioles 2–12 cm; blades (1-), 3-, or (5-) nerved, elliptic to lanceolate, 7–30 × 0.5–2.5 (–4) cm, bases cuneate to attenuate, margins entire (usually ciliate). Peduncles 10–30 cm. Phyllaries lanceolate to ovate, 6–12 × 1–2.5 mm. Receptacles: paleae 9–14 mm, tips purple, straight, sharp-pointed. Ray corollas pink to purplish, laminae reflexed, 15–40 × 5–8 mm, sparsely hairy abaxially. Discs conic to hemispheric, 15–30 × 20–35 mm. Disc corollas 5–7+ mm, lobes usually purple. Cypselae often bicolored, tan proximally, dark-brown banded distally, 4–5 mm, faces ± smooth, usually glabrous; pappi to ca. 1 mm (major teeth 0–4). 2n = 22, 44.


Phenology: Flowering late spring–mid summer.
Habitat: dry prairies, barrens, rocky to sandy-clay soils
Elevation: 100–1600 m

Distribution

V21-206-distribution-map.gif

Man., Sask., Colo., Iowa, Kans., Minn., Mo., Mont., Nebr., N.Mex., N.Dak., Okla., S.Dak., Tex., Wyo.

Discussion

R. L. McGregor (1967, 1968) recognized Echinacea angustifolia var. strigosa as a complex of diploid and tetraploid populations ranging geographically from southeastern Kansas and central Oklahoma to north-central Texas. He noted that var. strigosa is distinguishable by its shorter stature, stems frequently branched, somewhat flexuous, distally strigose to strigose-hirsute that retain, in part, a green color upon drying. A hybrid origin for var. strigosa was suggested based on the morphologic intermediacy of natural populations compared to synthesized hybrids between typical E. angustifolia and E. atrorubens (McGregor 1968). Populations along the southern boundary of the range of var. strigosa are tetraploid. In their morphometric analyses, S. E. Binns et al. (2002) did not recognize var. strigosa; they found it indistinguishable from typical E. angustifolia.

Selected References

None.

Lower Taxa

None.

"broader" is not a number.

... more about "Echinacea angustifolia"
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 +
de Candolle in A. P. de Candolle and A. L. P. P. de Candolle +
bristlelike +
coroniform +
cuneate +  and attenuate +
2.5 cm25 mm <br />0.025 m <br /> (4 cm40 mm <br />0.04 m <br />) +
7 cm70 mm <br />0.07 m <br /> (30 cm300 mm <br />0.3 m <br />) +
elliptic;lanceolate +
0.5cm;2.5cm +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
Narrow-leaved purple coneflower +  and blacksamson echinacea +
yellow +, reddish purple +, greenish +, pinkish +, dark purple +  and pale-pink white or yellow +
dark-brown banded +, tan +  and bicolored +
hairy +  and glabrous +
4-angled +  and 3-angled +
fertile +  and bisexual +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
fertile +  and bisexual +
1.5 cm15 mm <br />0.015 m <br /> (3 cm30 mm <br />0.03 m <br />) +
conic;hemispheric +
20mm;35mm +
Man. +, Sask. +, Colo. +, Iowa +, Kans. +, Minn. +, Mo. +, Mont. +, Nebr. +, N.Mex. +, N.Dak. +, Okla. +, S.Dak. +, Tex. +  and Wyo. +
100–1600 m +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
dry prairies, barrens, rocky to sandy-clay soils +
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 +
15mm;40mm +
cauline +  and basal +
triangular +
2-carpellate +
0.9 cm9 mm <br />0.009 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
persistent +
coroniform +
0 cm0 mm <br />0 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
10 cm100 mm <br />0.1 m <br /> (30 cm300 mm <br />0.3 m <br />) +
2 cm20 mm <br />0.02 m <br /> (12 cm120 mm <br />0.12 m <br />) +
Flowering late spring–mid summer. +
0.6 cm6 mm <br />0.006 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
15 +  and 50 +
unequal +  and subequal +
0.1 cm1 mm <br />0.001 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. +
sterile +  and fertile +
pink +  and purplish +
bearing subulate enations +, hairy +  and bristly +
hemispheric;conic +
exalbuminous +
branched +  and unbranched +
mostly green +  and purplish +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Echinacea angustifolia var. strigosa +
Echinacea angustifolia +
Echinacea +
species +
straight +
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 />) +