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Equisetum hyemale subsp. affine (Engelm.) Calder & Roy L. Taylor   (redirected from: Equisetum hyemale var. affine (Engelm.) A. A. Eat.)
Family: Equisetaceae
[Equisetum affine Rydb., moreEquisetum californicum (Milde) G.N.Jones, Equisetum hiemale var. drummondi (Milde) A. A. Eat., Equisetum hiemale var. herbaceum A. A. Eat., Equisetum hiemale var. japonicum Milde, Equisetum hiemale var. pumilum A. A. Eat., Equisetum hyemale f. herbaceum (A. A. Eat.) Broun, Equisetum hyemale f. pumilum (A. A. Eat.) Scoggan, Equisetum hyemale var. affine (Engelm.) A. A. Eat., Equisetum hyemale var. californica Farw., Equisetum hyemale var. californicum Milde, Equisetum hyemale var. elatum (Engelm.) Morton, Equisetum hyemale var. praealtum (Raf.) Clute, Equisetum hyemale var. pseudohyemale (Farw.) Morton, Equisetum hyemale var. ramosum Honda, Equisetum hyemale var. robustum (A. Br.) A. A. Eat., Equisetum komarovii Iljin, Equisetum praealtum Raf., Equisetum praealtum f. drummondii (Milde) M.Broun, Equisetum praealtum f. neopolystachyum (Farw.) M.Broun, Equisetum praealtum f. polystachyum (Prag.) M.Broun, Equisetum praealtum f. pumilum (A. A. Eat.) M.Broun, Equisetum praealtum f. ramosum (A. A. Eat.) M.Broun, Equisetum praealtum f. texanum (Milde) M.Broun, Equisetum praealtum var. affine (Engelm.) M. Broun, Equisetum robustum A. Br. ex Engelm., Equisetum robustum var. affine Engelm., Equisetum robustum var. drummondii Milde, Equisetum robustum var. minus Engelm., Hippochaete hyemalis f. affinis (Engelm.) Satou, Hippochaete hyemalis var. californica (Milde) Farw., Hippochaete praealta (Raf.) Farw., Hippochaete praealta var. affinis (Engelm.) Farw., Hippochaete praealta var. intermedia (A. A. Eat.) Farw., Hippochaete praealta var. pseudohyemalis Farw.]
Equisetum hyemale subsp. affine image
Russ Kleinman
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Richard L. Hauke in Flora of North America (vol. 2)
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 Ă— 3.5--18 mm; teeth 14--50, articulate and promptly shed or persistent. Cone apex pointed; spores green, spheric. 2 n =216. Cones maturing in summer, old stems sometimes developing branches with cones in spring. Moist roadsides, riverbanks, lakeshores, woodlands; 0--3000 m; 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. 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.

Equisetum hyemale subsp. affine
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Equisetum hyemale subsp. affine image
Tony Frates
Equisetum hyemale subsp. affine image
Russ Kleinman
Equisetum hyemale subsp. affine image
Russ Kleinman
Equisetum hyemale subsp. affine image
Russ Kleinman
Equisetum hyemale subsp. affine image
Russ Kleinman
Equisetum hyemale subsp. affine image
Russ Kleinman
Equisetum hyemale subsp. affine image
Russ Kleinman
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
Equisetum hyemale subsp. affine image
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The PCC, and this data portal, were made possible by funding from the National Science Foundation’s Advancing Digitization of Biological Collections (ADBC) program, grant numbers 1802504, 1802352, 1802134, 1802033, 1802270, 1802255, 1802239, 1802446, 1802305.
The pteridoportal taxonomic thesaurus is based on the Checklist of Ferns and Lycophytes of the World, generously provided by Michael Hassler.