Doellingeria infirma

(Michaux) Greene

Pittonia 3: 52. 1896.

Common names: Cornel-leaved or cornel-leaf whitetop aster
Endemic
Basionyms: Aster infirmus Michaux Fl. Bor.-Amer. 2: 109. 1803
Synonyms: Aster cornifolius Muhlenberg ex Willdenow Aster humilis Willdenow Diplopappus cornifolius (Muhlenberg ex Willdenow) Lessing ex Darlington Diplostephium cornifolium (Muhlenberg ex Willdenow) de Candolle Doellingeria cornifolia (Muhlenberg ex Willdenow) Nees Doellingeria humilis (Willdenow) Britton Doellingeria umbellata var. humilis (Willdenow) W. Stone
Treatment appears in FNA Volume 20. Treatment on page 45. Mentioned on page 43, 46.

Plants 40–120 cm (crowns short, woody). Stems 1, ascending to erect, slightly to strongly flexuous, striate, glabrous. Cauline leaves: mid and distal not crowded, blades broadly lanceolate to oblanceolate, 50–130 × 15–45 mm, reduced and narrower distally, bases cuneate, margins flat to ± involute, finely ciliate, apices acuminate, faces glabrous or sparsely hairy. Heads (1–) 3–33 (–78). Peduncles 1–10 mm (leafless or nearly so), sparsely to moderately canescent; bracts linear-lanceolate to broadly lanceolate. Involucres 3.8–6.8 mm. Phyllaries in 4–5 series, midveins usually swollen and translucent, apices narrowly rounded, glabrate. Rays (3–) 4–8 (–11); laminae 6–12 (–14.5) × 1–3.3 mm. Disc-florets 4–13 (–20); corollas 4–7 mm, lobes 2.5–3.5 mm, 50–75% of limbs. Cypselae 1.8–3.8 mm, 6–10-ribbed, glabrous, rarely sparsely strigose, sometimes sparsely glandular; pappi: outer 0.5–1 mm, inner 3.9–5 mm. 2n = 18.


Phenology: Flowering mid summer–early fall.
Habitat: Rich loam and dry rocky soils, deciduous woods, mountains and adjacent plateaus
Elevation: 10–100 m

Distribution

V20-61-distribution-map.gif

Ala., Conn., Del., Fla., Ga., Ky., Md., Mass., N.J., N.Y., N.C., Ohio, Pa., R.I., S.C., Tenn., Va., W.Va.

Discussion

Doellingeria infirma is found in the Appalachian Mountains, the Piedmont and adjacent plateaus, to northern Florida.

Selected References

None.

Lower Taxa

None.

"[" is not declared as a valid unit of measurement for this property."]" is not declared as a valid unit of measurement for this property.

... more about "Doellingeria infirma"
not tailed +, rounded +  and obtuse +
distinct +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
indeterminate +  and determinate +
flat-topped +
John C. Semple +  and Jerry G. Chmielewski +
(Michaux) Greene +
cuneate +
Aster infirmus +
compound +  and simple +
5 cm50 mm <br />0.05 m <br /> (13 cm130 mm <br />0.13 m <br />) +
broadly lanceolate;oblanceolate +
reduced +
narrower;15mm;45mm +
rugulose +  and muricate +
linear-lanceolate +  and broadly lanceolate +
white +  and tan +
Cornel-leaved or cornel-leaf whitetop aster +
not 2-lipped +  and actinomorphic +
pale-yellow +  and white +
ampliate +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
strigose +  and glabrous +
compressed +, terete +  and narrowly obconic +
fertile +  and bisexual +
fertile +  and bisexual +
Ala. +, Conn. +, Del. +, Fla. +, Ga. +, Ky. +, Md. +, Mass. +, N.J. +, N.Y. +, N.C. +, Ohio +, Pa. +, R.I. +, S.C. +, Tenn. +, Va. +  and W.Va. +
10–100 m +
hairy +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Rich loam and dry rocky soils, deciduous woods, mountains and adjacent plateaus +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
cylindro-campanulate +
0.38 cm3.8 mm <br />0.0038 m <br /> (0.68 cm6.8 mm <br />0.0068 m <br />) +
1.2 cm12 mm <br />0.012 m <br /> (1.45 cm14.5 mm <br />0.0145 m <br />) +
1mm;3.3mm +
cauline +  and basal +
spreading;reflexed +
deltate +
flat +  and more or less involute +
2-carpellate +
persistent +
inner +  and outer +
0.39 cm3.9 mm <br />0.0039 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Flowering mid summer–early fall. +
lanceolate +  and deltate +
bearing subulate enations +, hairy +  and bristly +
linear +  and subulate +
exalbuminous +
eglandular +  and simple +
flexuous +
ascending +  and erect +
appendaged +  and truncate +
papillate +  and smooth +
Aster cornifolius +, Aster humilis +, Diplopappus cornifolius +, Diplostephium cornifolium +, Doellingeria cornifolia +, Doellingeria humilis +  and Doellingeria umbellata var. humilis +
Doellingeria infirma +
Doellingeria +
species +
40 cm400 mm <br />0.4 m <br /> (200 cm2,000 mm <br />2 m <br />) +
dark green +