Echinacea sanguinea |
Echinacea laevigata |
|
---|---|---|
sanguine purple coneflower |
smooth purple coneflower |
|
Habit | Plants to 120 cm (roots fusiform to elongate-turbinate, branched). | Plants 35–110 cm (roots fusiform, ± branched). |
Herbage | sparsely to densely hairy (hairs spreading, to 1.5 mm) or glabrate. |
(glaucous) mostly glabrous (leaves sometimes sparsely hairy abaxially). |
Stems | mostly green to purplish. |
green. |
Basal leaves | petioles 4–12 cm; blades (1-) or 3-nerved, elliptic to lanceolate, 8–30 × 1–3 cm, bases attenuate, margins entire (usually ciliate). |
petioles 4–26 cm; blades 3- or 5-nerved, elliptic to lanceolate-ovate, 10–50 × 3–6.5 cm, bases broadly cuneate to rounded, margins usually serrate or dentate. |
Peduncles | 20–50+ cm. |
10–40 cm. |
Receptacles | paleae 8–11 mm, tips purple, slightly curved, usually rounded. |
paleae 7–12 mm, tips orange to brownish purple-tipped, often incurved, sharp-pointed. |
Ray corollas | pink to reddish purple, laminae reflexed, 40–70 × 3–4 mm, glabrous or sparsely hairy abaxially. |
pink to purple, laminae spreading to reflexed, 35–80 × 3–7 mm, sparsely hairy abaxially. |
Disc corollas | 5.5–6.7 mm, lobes usually purple. |
8–9 mm, lobes purple to greenish (usually erect). |
Phyllaries | lanceolate to ovate, 7–12 × 1–4 mm. |
lanceolate, 3–15 × 2–3(–5) mm. |
Cypselae | tan to bicolored (with distal dark brown band), 2.5–5 mm, faces ± tuberculate, glabrous; pappi to ca. 1 mm (major teeth 0–4). |
tan, disc cypselae tan, banded, 4–5 mm, usually glabrous (ray cypselae sometimes hairy on angles); pappi to 1.2 mm (teeth unequal). |
Discs | subspheric, 15–30 × 20–30 mm. |
conic to spheric, 15–30 × 15–40 mm. |
2n | = 22. |
= 22. |
Echinacea sanguinea |
Echinacea laevigata |
|
Phenology | Flowering late spring–early summer. | Flowering late spring–early summer. |
Habitat | Sandy, open, pine woods, prairies | Well-drained soils, open wooded hillsides, fields |
Elevation | 0–200 m (0–700 ft) | 100–1100 m (300–3600 ft) |
Distribution |
AR; LA; OK; TX |
GA; NC; PA; SC; VA |
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. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 21, p. 92. | FNA vol. 21, p. 90. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | E. pallida var. sanguinea | Brauneria laevigata, E. purpurea var. laevigata |
Name authority | Nuttall: Trans. Amer. Philos. Soc., n. s. 7: 354. (1840) | (C. L. Boynton & Beadle) S. F. Blake: J. Wash. Acad. Sci. 19: 273. (1929) |
Web links |