familyEquisetaceae
genusEquisetum
subgenusEquisetum subg. Equisetum
speciesEquisetum hyemale
subspeciesEquisetum hyemale subsp. affine
Difference between revisions of "Equisetum hyemale subsp. affine"
Canad. J. Bot. 43: 1387. 1965.
Basionym: Equisetum robustum var. affine Engelmann
Synonyms: Equisetum hyemale var. affine (Engelmann) A.A. EatonEquisetum hyemale var. californicum J.MildeEquisetum hyemale var. pseudohyemale (Farwell) C.V. MortonEquisetum hyemale var. robustum (A.Braun) A.A. EatonEquisetum prealtum unknown
Treatment appears in FNA Volume 2.
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| − | --><span class="statement" id="st- | + | --><span class="statement" id="st-undefined" data-properties=""><b>Aerial </b>stems persisting more than a year, unbranched, 18–220 cm; lines of stomates single; ridges 14–50. <b>Sheaths</b> when mature dark-girdled, brown to gray above girdle, squarish in face view, 4.5–17 × 3.5–18 mm; teeth 14–50, articulate and promptly shed or persistent. <b>Cone</b> apex pointed; spores green, spheric. <b>2n</b> =216.</span><!-- |
-->{{Treatment/Body | -->{{Treatment/Body | ||
| + | |phenology=Cones maturing in summer, old stems sometimes developing branches with cones in spring. | ||
|habitat=Moist roadsides, riverbanks, lakeshores, woodlands | |habitat=Moist roadsides, riverbanks, lakeshores, woodlands | ||
|elevation=0–3000 m | |elevation=0–3000 m | ||
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|basionyms=Equisetum robustum var. affine | |basionyms=Equisetum robustum var. affine | ||
|family=Equisetaceae | |family=Equisetaceae | ||
| + | |phenology=Cones maturing in summer, old stems sometimes developing branches with cones in spring. | ||
|habitat=Moist roadsides, riverbanks, lakeshores, woodlands | |habitat=Moist roadsides, riverbanks, lakeshores, woodlands | ||
|elevation=0–3000 m | |elevation=0–3000 m | ||
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|publication year=1965 | |publication year=1965 | ||
|special status= | |special status= | ||
| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna- | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V2/V2_735.xml |
|genus=Equisetum | |genus=Equisetum | ||
|subgenus=Equisetum subg. Equisetum | |subgenus=Equisetum subg. Equisetum | ||
|species=Equisetum hyemale | |species=Equisetum hyemale | ||
|subspecies=Equisetum hyemale subsp. affine | |subspecies=Equisetum hyemale subsp. affine | ||
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Revision as of 13:27, 27 July 2019
Aerial stems persisting more than a year, unbranched, 18–220 cm; lines of stomates single; ridges 14–50. Sheaths when mature dark-girdled, brown to gray above girdle, squarish in face view, 4.5–17 × 3.5–18 mm; teeth 14–50, articulate and promptly shed or persistent. Cone apex pointed; spores green, spheric. 2n =216.
Phenology: Cones maturing in summer, old stems sometimes developing branches with cones in spring.
Habitat: Moist roadsides, riverbanks, lakeshores, woodlands
Elevation: 0–3000 m
Distribution
Alta., B.C., Man., N.B., Nfld., N.W.T., N.S., Ont., P.E.I., Que., Sask., Yukon, Alaska including the Aleutian Islands, all other states, Mexico, Central America in Guatemala.
Discussion
In southern and central to western regions plants tend to be taller and have more persistent teeth (Equisetum robustum, E. prealtum); in the Far West they often have bituberculate ridges (E. hyemale var. californicum). Equisetum hyemale subsp. hyemale is found in Europe and Asia to northwestern China in Xinjiang.
Selected References
None.
Lower Taxa
None.