Alnus viridis subsp. crispa

(Aiton) Turrill

Bot. Mag. 173: 382. 1962.

Common names: Green alder mountain alder aulne vert aulne crispé
EndemicIllustrated
Basionym: Betula crispa Aiton Hort. Kew. 2: 339. 1789
Synonyms: Alnus alnobetula var. crispa (Aiton) Winkler Alnus crispa var. elongata Raup Alnus crispa var. harricanensis Lepage Alnus crispa var. mollis (Fernald) Fernald Alnus crispa var. stragula Fernald Alnus mitchelliana Alnus mollis Alnus viridis var. crispa (Michaux) House
Treatment appears in FNA Volume 3.

Shrubs, spreading or rather compact, to 3 (–4) m. Bark grayish brown; lenticels pale. Leaf-blade dark green, broadly to narrowly ovate or elliptic, 3.5–6 (–10) × 3–5 (–7) cm, leathery, base rounded, obtuse, or cuneate, sometimes nearly cordate, margins serrulate or finely serrate, apex obtuse to acute; surfaces abaxially glabrous to velutinous or occasionally tomentose, moderately to heavily resin-coated. Inflorescences: staminate catkins 2.5–9 cm. Infructescences 1.2–2 × 0.5–1.2 cm; peduncles 1–5 cm. 2n = 28.


Phenology: Flowering spring.
Habitat: Singly or in thickets along streams, lakeshores, coasts, and bog or muskeg margins, or on sandy or gravelly slopes or flats
Elevation: 0–2000 m

Distribution

V3 846-distribution-map.gif

St. Pierre and Miquelon, Greenland, Alta., Man., N.B., Nfld. and Labr. (Nfld.), N.W.T., N.S., Ont., P.E.I., Que., Sask., Maine, Mass., Mich., Minn., N.H., N.Y., N.C., Pa., Tenn., Vt., Wis.

Discussion

Alnus viridis subsp. crispa grows across much of the continent in the far North; widely disjunct populations occur in the Appalachians in Pennsylvania and on the summit of Roan Mountain on the North Carolina–Tennessee border (R. B. Clarkson 1960; E. T. Wherry 1960).

The Cree used Alnus viridis subsp. crispa medicinally for the astringent qualities of the bark and to treat dropsy (D. E. Moerman 1986).

Selected References

None.

Lower Taxa

None.

"thin" is not a number."persistent" is not a number.

Obtuse (?) +  and Acute (?) +
John J. Furlow +
(Aiton) Turrill +
tanniferous +  and furrowed +
grayish brown +
exfoliating +
cordate +, cuneate +, obtuse +  and rounded +
Betula crispa +
2 (?) +  and 3 (?) +
in relatively small racemose clusters +  and solitary +
solitary +, cluster +  and racemose +
erect +  and nearly pendulous +
proximal +  and lateral +
ovoid +  and ellipsoid +
expanding +
2.5 cm25 mm <br />0.025 m <br /> (9 cm90 mm <br />0.09 m <br />) +
Green alder +, mountain alder +, aulne vert +  and aulne crispé +
multibracteate +
St. Pierre and Miquelon +, Greenland +, Alta. +, Man. +, N.B. +, Nfld. and Labr. (Nfld.) +, N.W.T. +, N.S. +, Ont. +, P.E.I. +, Que. +, Sask. +, Maine +, Mass. +, Mich. +, Minn. +, N.H. +, N.Y. +, N.C. +, Pa. +, Tenn. +, Vt. +  and Wis. +
0–2000 m +
pistillate +  and staminate +
reduced +  and small +
small +  and large +
Singly or in thickets along streams, lakeshores, coasts, and bog or muskeg margins, or on sandy or gravelly slopes or flats +
1.2 cm12 mm <br />0.012 m <br /> (2 cm20 mm <br />0.02 m <br />) +
ovoid +  and ellipsoid or nearly cylindric +
1 cm10 mm <br />0.01 m <br /> (4 cm40 mm <br />0.04 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
membranaceous +  and leathery +
6 cm60 mm <br />0.06 m <br /> (10 cm100 mm <br />0.1 m <br />) +
5 cm50 mm <br />0.05 m <br /> (7 cm70 mm <br />0.07 m <br />) +
3.5 cm35 mm <br />0.035 m <br /> (6 cm60 mm <br />0.06 m <br />) +
3 cm30 mm <br />0.03 m <br /> (5 cm50 mm <br />0.05 m <br />) +
3-ranked +  and nearly 2-ranked +
conspicuous +  and inconspicuous +
unenlarged +  and small +
serrate +  and serrulate +
serrulate to coarsely +
1 cm10 mm <br />0.01 m <br /> (5 cm50 mm <br />0.05 m <br />) +
not obvious +  and defined +
membranaceous +
Flowering spring. +
2(-3)-carpellate +
1-seeded +  and 2-winged +
elliptic;obovate +
deciduous +  and persistent +
4 +  and 6 +
unequal +
expanding +
thicker +  and thin +
Endemic +  and Illustrated +
nearly +  and distinct +
resin-coated +
abaxially glabrous;velutinous or occasionally tomentose +
Alnus alnobetula var. crispa +, Alnus crispa var. elongata +, Alnus crispa var. harricanensis +, Alnus crispa var. mollis +, Alnus crispa var. stragula +, Alnus mitchelliana +, Alnus mollis +  and Alnus viridis var. crispa +
Alnus viridis subsp. crispa +
Alnus viridis +
subspecies +
excurrent +  and deliquescent +
differentiated +  and uniform +
membranaceous +
tanniferous +
light +  and white +