Alnus viridis subsp. fruticosa

(Ruprecht) Nyman

Consp. Fl. Eur., 672. 1881

Common names: Siberian alder
Basionyms: Alnus fruticosa Ruprecht Distr. Crypt. Vasc. Ross., 53. 1845
Synonyms: Alnus viridis var. fruticosa (Ruprecht) Regel
Treatment appears in FNA Volume 3.
Shrubs, spreading, to 3(–6) m. Bark gray-brown; lenticels pale. Leaf blade dark green, broadly ovate, 5–8(–10) × 3–6(–7) cm, base rounded to nearly truncate or nearly cordate, margins flat, sharply and densely doubly serrate, apex acute to short-acuminate; surfaces abaxially glabrous to sparsely pubescent, especially on veins, moderately to heavily resin-coated. Inflorescences: staminate catkins 3.5–6 cm. Infructescences 1.2–2 × 0.5–1.2 cm; peduncles 1–3 cm. 2n = 28.

Phenology: Flowering spring.
Habitat: Rocky or sandy coasts, stream banks, lakeshores, and damp, open areas
Elevation: 0–500 m


V3 506-distribution-map.gif

Alta., B.C., N.W.T., Sask., Yukon, Alaska, Calif., Oreg., Wash., n Asia.


This primarily subarctic Asian subspecies has long been mistaken in western North America for Alnus viridis subsp. crispa, which it closely resembles, or for </i>subsp.<i> sinuata (J. J. Furlow 1983b). It can be separated from the former by its larger and more coarsely toothed leaves, and from the latter by its much thicker, mostly single-toothed leaf blades.



Lower Taxa

No lower taxa listed.

AuthorJohn J. Furlow +
Authority(Ruprecht) Nyman +
BasionymsAlnus fruticosa +
Common nameSiberian alder +
DistributionAlta. +, B.C. +, N.W.T. +, Sask. +, Yukon +, Alaska +, Calif. +, Oreg. +, Wash. + and n Asia. +
Elevation0–500 m +
HabitatRocky or sandy coasts, stream banks, lakeshores, and damp, open areas +
IllustratorJohn Myers +
PhenologyFlowering spring. +
Publication titleConsp. Fl. Eur., +
Publication year1881 +
ReferenceNone +
Source xml grained fna xml/V3/V3 506.xml +
SynonymsAlnus viridis var. fruticosa +
Taxon familyBetulaceae +
Taxon nameAlnus viridis subsp. fruticosa +
Taxon parentAlnus viridis +
Taxon ranksubspecies +
VolumeVolume 3 +