PteridoPortal - Equisetum telmateia

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Equisetum telmateia
Family: Equisetaceae Testo Weston	FNA Gleason & Cronquist Resources Richard L. Hauke in Flora of North America (vol. 2) Subspecies 2 (1 in the flora): North America, Europe, n Africa, w Asia. Vascular plants of NE US and adjacent Canada Resembling no. 9 [Equisetum arvense L.], but much more robust; sterile stems 5-30 dm, 0.5-2 cm thick, with more numerous (commonly 20-40) but lower ridges, their sheaths mostly 1-2.5 cm, with slender, attenuate teeth 3-8 mm, the branches 4-6-angled, fertile stems 2.5-6 dm, 1-2.5 cm thick, their sheaths 2-5 cm, with 20-30 prominent teeth connate in groups of 2-4; cone 4-10 cm. Moist low places; Europe and N. Afr.; Alaska panhandle to s. Calif.; formerly (but perhaps not now) in n. Mich. The Amer. pls have been segregated as var. braunii (Milde) Milde. Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp. ©The New York Botanical Garden. All rights reserved. Used by permission.
Open Interactive Map $Equisetum telmateia image$ Alex Harkness Click to Display 100 Initial Images - - - - - View All Images

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.