Difference between revisions of "Alnus alnobetula"
Dendrologie 2(1): 625. 1872.
Basionym: Betula alnobetula Ehrhart Gartenkalender 2: 193. 1783
Synonyms: Alnus ovata (Schrank) Loddiges Alnus viridis (Chaix) de Candolle
Treatment appears in FNA Volume 3.
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{{Treatment/ID | {{Treatment/ID | ||
| − | |accepted_name=Alnus | + | |accepted_name=Alnus alnobetula |
| − | |accepted_authority=( | + | |accepted_authority=(Ehrhart) K. Koch |
|publications={{Treatment/Publication | |publications={{Treatment/Publication | ||
| − | |title= | + | |title=Dendrologie |
| − | |place= | + | |place=2(1): 625. 1872 |
| − | |year= | + | |year=1872 |
}} | }} | ||
| − | |basionyms={{Treatment/ID/ | + | |basionyms={{Treatment/ID/Basionym |
| − | |name=Betula | + | |name=Betula alnobetula |
| − | |authority= | + | |authority=Ehrhart |
| + | |rank=species | ||
| + | |publication_title=Gartenkalender | ||
| + | |publication_place=2: 193. 1783 | ||
}} | }} | ||
|synonyms={{Treatment/ID/Synonym | |synonyms={{Treatment/ID/Synonym | ||
| − | |||
| − | |||
| − | |||
|name=Alnus ovata | |name=Alnus ovata | ||
|authority=(Schrank) Loddiges | |authority=(Schrank) Loddiges | ||
| + | |rank=species | ||
| + | }} {{Treatment/ID/Synonym | ||
| + | |name=Alnus viridis | ||
| + | |authority=(Chaix) de Candolle | ||
| + | |rank=species | ||
}} | }} | ||
| − | |hierarchy=Betulaceae;Betulaceae subfam. Betuloideae;Alnus;Alnus | + | |hierarchy=Betulaceae;Betulaceae subfam. Betuloideae;Alnus;Alnus alnobetula |
| − | |hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Betulaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Betulaceae subfam. Betuloideae]]</div><div class="higher-taxon"><small>genus</small>[[Alnus]]</div><div class="higher-taxon"><small>species</small>[[Alnus | + | |hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Betulaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Betulaceae subfam. Betuloideae]]</div><div class="higher-taxon"><small>genus</small>[[Alnus]]</div><div class="higher-taxon"><small>species</small>[[Alnus alnobetula]]</div></div> |
|volume=Volume 3 | |volume=Volume 3 | ||
|mention_page= | |mention_page= | ||
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}}<!-- | }}<!-- | ||
| − | --><span class="statement" id="st- | + | --><span class="statement" id="st-undefined" data-properties=""><b>Shrubs,</b> spreading to compact, to 10 m. <b>Bark</b> smooth; lenticels scattered, conspicuous to inconspicuous, small, mostly unenlarged. <b>Winter</b> buds nearly sessile, ovoid, apex acuminate; stalks usually not over 1 mm; scales 4–6, unequal, imbricate. <b>Leaf</b> blade broadly to narrowly ovate or elliptic, 3–11 × 3–8 cm, base rounded, obtuse, or cuneate, sometimes nearly cordate, margins serrulate to coarsely doubly serrate, apex acute to rounded; surfaces abaxially glabrous to tomentose, lightly to heavily resin-coated. <b>Inflorescences</b>: staminate catkins in 1 cluster of 2–4, formed late in growing season before flowering and exposed during winter; pistillate catkins in 1 or more clusters of 2–10, formed season before blooming, enclosed in buds during winter, exposed with new growth in spring. <b>Flowering</b> with new growth in spring. <b>Infructescences</b> ovoid to ellipsoid or nearly cylindric; peduncles relatively long, thin. <b>Samaras</b> elliptic to obovate, wings wider than body, membranaceous.</span><!-- |
-->{{Treatment/Body | -->{{Treatment/Body | ||
| − | |distribution=Southern arctic;subarctic;and n mountainous regions;North America and Asia | + | |distribution=St. Pierre and Miquelon;Greenland;Alta.;B.C.;Man.;N.B.;Nfld. and Labr.;N.W.T.;N.S.;Nunavut;Ont.;P.E.I.;Que.;Sask.;Yukon;Alaska;Calif.;Idaho;Maine;Mass.;Mich.;Minn.;Mont.;N.C.;N.H.;N.Y.;Oreg.;Pa.;Tenn.;Vt.;Wash.;Wis.;Wyo.;Southern arctic;subarctic;and n mountainous regions;North America and Asia. |
|discussion=<p>Subspecies 4 (3 in the flora).</p><!-- | |discussion=<p>Subspecies 4 (3 in the flora).</p><!-- | ||
| − | --><p>Alnus | + | --><p><i>Alnus alnobetula</i> is distinctive among the alders in its essentially sessile buds with several imbricate scales and in its relatively long, thin, infructescence peduncles. Like the birches, only the staminate catkins are exposed during the winter prior to blooming.</p> |
| + | <p>Although the name <i>Alnus viridis</i> is often used for this species, its basionym, <i>Betula viridis</i> Chaix, was published after <i>Betula alnobetula</i>, making the correct name for the species <i>A. alnobetula</i>.</p> | ||
|tables= | |tables= | ||
|references= | |references= | ||
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{| class="wikitable fna-keytable" | {| class="wikitable fna-keytable" | ||
| − | |-id=key-0-1 | + | |- id="key-0-1" |
|1 | |1 | ||
|Leaf blade coarsely doubly serrate, thin, light or yellowish green, glabrous to sparsely pubescent; mountainous nw United States, Alaska, and Canada. | |Leaf blade coarsely doubly serrate, thin, light or yellowish green, glabrous to sparsely pubescent; mountainous nw United States, Alaska, and Canada. | ||
| − | |[[Alnus | + | |[[Alnus alnobetula subsp. sinuata]] |
| − | |-id=key-0-1 | + | |- id="key-0-1" |
|1 | |1 | ||
|Leaf blade serrulate to finely and densely serrate or doubly serrate, firm, dark green, sometimes abaxially sparsely to densely pubescent. | |Leaf blade serrulate to finely and densely serrate or doubly serrate, firm, dark green, sometimes abaxially sparsely to densely pubescent. | ||
|[[#key-0-2| > 2]] | |[[#key-0-2| > 2]] | ||
| − | |-id=key-0-2 | + | |- id="key-0-2" |
|2 | |2 | ||
|Leaf blade broadly to narrowly ovate or elliptic, margins serrulate or finely serrate, apex obtuse to acute; e United States, n Canada, Alaska, and s Greenland. | |Leaf blade broadly to narrowly ovate or elliptic, margins serrulate or finely serrate, apex obtuse to acute; e United States, n Canada, Alaska, and s Greenland. | ||
| − | |[[Alnus | + | |[[Alnus alnobetula subsp. crispa]] |
| − | |-id=key-0-2 | + | |- id="key-0-2" |
|2 | |2 | ||
|Leaf blade broadly ovate, margins sharply and densely doubly serrate, apex acute to short-acuminate; w coastal North America, adjacent subarctic Asia. | |Leaf blade broadly ovate, margins sharply and densely doubly serrate, apex acute to short-acuminate; w coastal North America, adjacent subarctic Asia. | ||
| − | |[[Alnus | + | |[[Alnus alnobetula subsp. fruticosa]] |
|} | |} | ||
</div></div><!-- | </div></div><!-- | ||
-->{{#Taxon: | -->{{#Taxon: | ||
| − | name=Alnus | + | name=Alnus alnobetula |
| − | + | |authority=(Ehrhart) K. Koch | |
| − | |authority=( | ||
|rank=species | |rank=species | ||
|parent rank=genus | |parent rank=genus | ||
| − | |synonyms=Alnus | + | |synonyms=Alnus ovata;Alnus viridis |
| − | |basionyms=Betula | + | |basionyms=Betula alnobetula |
|family=Betulaceae | |family=Betulaceae | ||
| − | |distribution=Southern arctic;subarctic;and n mountainous regions;North America and Asia | + | |distribution=St. Pierre and Miquelon;Greenland;Alta.;B.C.;Man.;N.B.;Nfld. and Labr.;;N.W.T.;N.S.;Nunavut;Ont.;P.E.I.;Que.;Sask.;Yukon;Alaska;Calif.;Idaho;Maine;Mass.;Mich.;Minn.;Mont.;N.C.;N.H.;N.Y.;Oreg.;Pa.;Tenn.;Vt.;Wash.;Wis.;Wyo.;Southern arctic;subarctic;and n mountainous regions;North America and Asia. |
|reference=None | |reference=None | ||
| − | |publication title= | + | |publication title=Dendrologie |
| − | |publication year= | + | |publication year=1872 |
|special status= | |special status= | ||
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V3/V3_755.xml |
|subfamily=Betulaceae subfam. Betuloideae | |subfamily=Betulaceae subfam. Betuloideae | ||
|genus=Alnus | |genus=Alnus | ||
| − | |species=Alnus | + | |species=Alnus alnobetula |
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}}<!-- | }}<!-- | ||
| − | -->[[Category:Treatment]][[Category:Alnus]] | + | --> |
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| + | [[Category:Treatment]] | ||
| + | [[Category:Alnus]] | ||
| + | [[Category:Revised Since Print]] | ||
Latest revision as of 13:55, 29 February 2024
Shrubs, spreading to compact, to 10 m. Bark smooth; lenticels scattered, conspicuous to inconspicuous, small, mostly unenlarged. Winter buds nearly sessile, ovoid, apex acuminate; stalks usually not over 1 mm; scales 4–6, unequal, imbricate. Leaf blade broadly to narrowly ovate or elliptic, 3–11 × 3–8 cm, base rounded, obtuse, or cuneate, sometimes nearly cordate, margins serrulate to coarsely doubly serrate, apex acute to rounded; surfaces abaxially glabrous to tomentose, lightly to heavily resin-coated. Inflorescences: staminate catkins in 1 cluster of 2–4, formed late in growing season before flowering and exposed during winter; pistillate catkins in 1 or more clusters of 2–10, formed season before blooming, enclosed in buds during winter, exposed with new growth in spring. Flowering with new growth in spring. Infructescences ovoid to ellipsoid or nearly cylindric; peduncles relatively long, thin. Samaras elliptic to obovate, wings wider than body, membranaceous.
Distribution
St. Pierre and Miquelon, Greenland, Alta., B.C., Man., N.B., Nfld. and Labr., N.W.T., N.S., Nunavut, Ont., P.E.I., Que., Sask., Yukon, Alaska, Calif., Idaho, Maine, Mass., Mich., Minn., Mont., N.C., N.H., N.Y., Oreg., Pa., Tenn., Vt., Wash., Wis., Wyo., Southern arctic, subarctic, and n mountainous regions, North America and Asia.
Discussion
Subspecies 4 (3 in the flora).
Alnus alnobetula is distinctive among the alders in its essentially sessile buds with several imbricate scales and in its relatively long, thin, infructescence peduncles. Like the birches, only the staminate catkins are exposed during the winter prior to blooming.
Although the name Alnus viridis is often used for this species, its basionym, Betula viridis Chaix, was published after Betula alnobetula, making the correct name for the species A. alnobetula.
Selected References
None.
Lower Taxa
Key
| 1 | Leaf blade coarsely doubly serrate, thin, light or yellowish green, glabrous to sparsely pubescent; mountainous nw United States, Alaska, and Canada. | Alnus alnobetula subsp. sinuata |
| 1 | Leaf blade serrulate to finely and densely serrate or doubly serrate, firm, dark green, sometimes abaxially sparsely to densely pubescent. | > 2 |
| 2 | Leaf blade broadly to narrowly ovate or elliptic, margins serrulate or finely serrate, apex obtuse to acute; e United States, n Canada, Alaska, and s Greenland. | Alnus alnobetula subsp. crispa |
| 2 | Leaf blade broadly ovate, margins sharply and densely doubly serrate, apex acute to short-acuminate; w coastal North America, adjacent subarctic Asia. | Alnus alnobetula subsp. fruticosa |