Doellingeria umbellata

(Miller) Nees

Gen. Sp. Aster., 178. 1832.

Common names: Tall flat-topped white aster parasol whitetop aster à ombelle
IllustratedEndemic
Basionym: Aster umbellatus Miller Gard. Dict. ed. 8, Aster no. 22. 1768
Synonyms: Diplopappus umbellatus (Miller) Hooker Diplostephium umbellatum (Miller) Cassini
Treatment appears in FNA Volume 20. Treatment on page 44. Mentioned on page 78.

Plants 50–200 cm (short to long-rhizomatous, sometime colonial). Stems 1–10(–20), ascending to erect, striate, glabrous or sparsely hairy. Cauline leaves: mid and distal crowded, blades broadly to narrowly elliptic, (35–)60–110(–150) × (5–) 13–25(–35) mm, ± reduced distally, not stiff, bases attenuate, margins entire, involute, finely ciliate, apices acuminate, faces glabrous or sparsely hairy, especially along veins abaxially, or densely hairy. Heads (3–)20–100(–300+). Peduncles 1–10 mm, moderately to densely canescent; bracts linear-lanceolate to elliptic. Involucres 3–5 mm. Phyllaries in 3–4 series, triangular-lanceolate, midveins not swollen, apices finely subulate, strigose. Rays (2–)5–10(–16); laminae (4–)7–10(–12.3) × (0.8–) 1.2–1.8(–2.7) mm. Disc florets (5–)11–26(–50); corollas 3.5–6 mm, lobes 2–3.2 mm, 60–75% of limb. Cypselae 1.4–3.2 mm, 4–6-ribbed, sparsely to densely strigose; pappi: outer 0.2–0.8 mm, inner 3.5–6.2 mm. 2n = 18.

Distribution

V20-57-distribution-map.gif

Alta., Man., N.B., N.S., Nfld. and Labr. (Nfld.), Ont., P.E.I., Que., Sask., Ala., Conn., Del., Ga., Ill., Ind., Iowa, Ky., Maine, Mass., Md., Mich., Minn., N.C., N.Dak., N.H., N.J., N.Y., Nebr., Ohio, Pa., R.I., S.C., Tenn., Va., Vt., W.Va., Wis.

Discussion

Varieties 2 (2 in the flora).

Selected References

None.

Key

1 Leaves: abaxial faces sparsely piloso-villous (fewer than 10 hairs/mm 2); Newfoundland to Minnesota, s to n Alabama and Georgia Doellingeria umbellata var. umbellata
1 Leaves: abaxial faces densely puberulent (more than 12 hairs/mm 2); n Ontario, s Manitoba (disjunct to Alberta) s to Nebraska, Iowa, Illinois Doellingeria umbellata var. pubens
... more about "Doellingeria umbellata"
John C. Semple +  and Jerry G. Chmielewski +
(Miller) Nees +
Aster umbellatus +
Tall flat-topped white aster +, parasol whitetop +  and aster à ombelle +
Alta. +, Man. +, N.B. +, N.S. +, Nfld. and Labr. (Nfld.) +, Ont. +, P.E.I. +, Que. +, Sask. +, Ala. +, Conn. +, Del. +, Ga. +, Ill. +, Ind. +, Iowa +, Ky. +, Maine +, Mass. +, Md. +, Mich. +, Minn. +, N.C. +, N.Dak. +, N.H. +, N.J. +, N.Y. +, Nebr. +, Ohio +, Pa. +, R.I. +, S.C. +, Tenn. +, Va. +, Vt. +, W.Va. +  and Wis. +
Gen. Sp. Aster., +
Illustrated +  and Endemic +
Diplopappus umbellatus +  and Diplostephium umbellatum +
Doellingeria umbellata +
Doellingeria +
species +