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Goto:

Equisetum L.

Kortteet Horsetails Scouring-rushes
Equisetum, Biota of North America Program (query database) [BONAP]
Equisetum, Den Virtuella Floran [DVF]

Foodplants for Xylena vetusta

600x917 (~65Kb) USA: Near Puyallup (47°15'18N 122°13'45W), Pierce Co., WA, 16.7.1999, Photo © Markku Savela

600x917 (~141Kb) USA: Near Puyallup (47°15'18N 122°13'45W), Pierce Co., WA, 16.7.1999, Photo © Markku Savela

The exact identification of these species is still unknown, but tentatively assumed to belong into this group.

Equisetum hyemale L., 1753

Kangaskorte Rough Horsetail Scouring-rush Skavfräken Winter-Schachtelhalm Prèle d'hiver
Equisetum hyemale, Aquatic and Wetland Vascular Plants of the Northern Great Plains [USGS]
Equisetum hiemale, Bilder ur Nordens Flora (in Swedish) [RUNEBERG]
Equisetum hiemale ; (spell.variant); [TSF, #60]
Equisetum hyemale ; [TFG, 250]; [RK, 41]

647x1048 (~107Kb) Finland, Ylöjärvi, Ylä-Pinsiö, 29.5.2005, Photo © Harri Arkkio

719x1047 (~50Kb) Finland, Ylöjärvi, Ylä-Pinsiö, 29.5.2005, Photo © Harri Arkkio

E. h. v. affine (Engelmann) Eaton, 1903

Equisetum robustum v. affine Engelmann, 1844
Hippochaete prealta v. pseudohyemalis Farwell, 1917
Equisetum hiemale v. pseudohiemale (Farwell); Morton, 1952
Equisetum hyemale v. affine ; [TFG, 250]

E. h. v. elatum (Engelmann) Morton, 1951

Equisetum laevigatum elatum Engelmann, 1844
Equisetum robustum Braun, 1844
Equisetum hyemale v. elatum ; [TFG, 250]
Equisetum prealtum ; Rafinesque, 1817, (missp. praealtum)

Equisetum hyemale × variegatum

Kuusamonkorte Gotlandfräken Rauhzähniger Schachtelhalm Prèle à dents rudes
Equisetum × trachyodon A. Braun
Equisetum trachyodon ; [TSF, #61]
Equisetum hyemale × variegatum ; [RK, 41]

Equisetum variegatum Schleicher ex Weber & Mohr., 1807

Kirjokorte Variegated Horsetail Variegated Scouring-rush Smalfräken Schleicher Schachtelhalm Bunter Schachtelhalm Prèle panachée
Equisetum tenue Spreng
Equisetum variegatum ; [TFG, 246]; [TSF, #62]; [RK, 42]

533x924 (~76Kb) Finland, Tuusula, Ruotsinkylä, Fira, 30.8.2003 © Harri Arkkio

E. v. v. jesupi Eaton, 1901

Equisetum jesupi (Eaton); Eaton, 1904
Equisetum variegatum v. jesupi ; [TFG, 246]

E. v. v. nelsoni Eaton, 1904

Equisetum nelsoni (Eaton); Schaffner, 1926
Equisetum variegatum v. nelsoni ; [TFG, 246]

Equisetum scirpoides Michaux, 1803

Hentokorte Dwarf Scouring-rush Least Scouring-rush Trådfräken
Equisetum scirpoides ; [TFG, 244]; [RK, 42]

828x1165 (~91Kb) Finland, Kilpisjärvi, 25.7.2004, Photo © Harri Arkkio

Equisetum fluviatile L., 1753

Järvikorte Water Horsetail Sjöfräken Schlamm-Schachtelhalm Prèle des eaux courantes
Equisetum limosum L., 1753
Equisetum heleocharis Ehrh.
Equisetum fluviatile, Aquatic and Wetland Vascular Plants of the Northern Great Plains [USGS]
Equisetum fluviatile ; [TFG, 240]; [TSF, #59]; [RK, 42]

500x717 (~34Kb) FINLAND: Ka: Virolahti, Virojoki 671:53, 31.5.1997, Photo © Markku Savela

Equisetum palustre L., 1753

Suokorte Marsh Horsetail Kärrfräken Sumpf-Schachtelhalm Prèle des marais
Equisetum palustre, Aquatic and Wetland Vascular Plants of the Northern Great Plains [USGS]
Equisetum palustre, Bilder ur Nordens Flora (in Swedish) [RUNEBERG]
Equisetum palustre ; [TFG, 242]; [TSF, #58]; [RK, 43]

600x761 (~50Kb) FINLAND: Li: Utsjoki Ailigas, 775:50, 8.7.1997, Photo © Markku Savela Equisetum palustre det. Tapio Lahtonen	400x742 (~21Kb) FINLAND: Li: Utsjoki Ailigas, 775:50, 8.7.1997, Photo © Markku Savela Equisetum palustre det. Tapio Lahtonen	900x634 (~68Kb) FINLAND: Ks: Kuusamo, Särkiluoma, 733:62, 3.7.1997, Photo © Markku Savela Equisetum palustre det. Tapio Lahtonen
600x952 (~109Kb) FINLAND: Ks: Kuusamo, Särkiluoma, 733:62, 3.7.1997, Photo © Markku Savela Equisetum palustre det. Tapio Lahtonen	600x911 (~65Kb) FINLAND: Li: Inari, Luttojoki, 760:54, 10.7.1998, Photo © Markku Savela Equisetum palustre det. Tapio Lahtonen

Foodplant for Gnorimoschema herbichii

E. p. var. americanum Marie-Victorin, 1927

Equisetum palustre var. americanum ; [TFG, 242]

Equisetum sylvaticum L., 1758

Metsäkorte Wood Horsetail Sylvan Horsetail Woodland Horsetail Skogsfräken Wald-Schachtelhalm Prèle des bois
Equisetum sylvaticum, Aquatic and Wetland Vascular Plants of the Northern Great Plains [USGS]
Equisetum silvaticum ; [TSF, #56]
Equisetum sylvaticum ; [TFG, 238]; [RK, 43]

1200x813 (~140Kb) FINLAND: KiL: Muonio, Kangosjärvi, 753:35, 19.7.1997, Photo © Hannele Aulin

600x857 (~56Kb) FINLAND: Ab: Suomusjärvi, 669:31, 25.5.1997, Photo © Markku Savela

E. s. v. pauciramosum Milde, 1865

Equisetum sylvaticum v. pauciramosum ; [TFG, 238 (note)]

E. s. v. multiramosum (Fernald) Wherry, 1937

Equisetum sylvaticum v. pauciramosum f. multiramosum Fernald, 1918
Equisetum sylvaticum v. multiramosum ; [TFG, 238 (note)]

Equisetum telmateia Ehrhart, 1783

Great Horsetail

979x734 (~216Kb) Greece: Ipiros, path Parga - Anthousa, 7.6.2006, Photo © Harri Arkkio

734x979 (~238Kb) Greece: Ipiros, path Parga - Anthousa, 7.6.2006, Photo © Harri Arkkio

783x1044 (~95Kb) Greece: Ipiros, path Parga - Anthousa, 7.6.2006, Photo © Harri Arkkio

E. t. v. braunii Milde, 1865

Equisetum telmateia v. braunii ; [TFG, 236 (note)]

Equisetum pratense Ehrhart, 1784

Lehtokorte Meadow Horsetail Ängsfräken Wiesen-Schachtelhalm Prèle des prés
Equisetum pratense, Aquatic and Wetland Vascular Plants of the Northern Great Plains [USGS]
Equisetum pratense ; [TSF, #57]; [TFG, 236]; [RK, 43]

Equisetum arvense L., 1753

Peltokorte Field Horsetail Åkerfräken Acker-Schachtelhalm Prèle des champs
Equisetum arvense, Aquatic and Wetland Vascular Plants of the Northern Great Plains [USGS]
Equisetum arvense, Bilder ur Nordens Flora (in Swedish) [RUNEBERG]
Equisetum arvense ; [TFG, 234]; [TSF, #54]; [RK, 43]

673x1037 (~145Kb) Finland, Hämeenkyrö, Jumesniemi, 12.5.2005, Photo © Harri Arkkio

1049x1467 (~146Kb) Finland, Nokia, Jaakkola, 18.5.2005, Photo © Harri Arkkio

550x832 (~80Kb) FINLAND: Ka: Virolahti, 671:53, 17.5.1997, Photo © Markku Savela

Equisetum arvense × fluviatile

Rantakorte Strandfräken Shore Horsetail
Equisetum × litorale Kühlewein ex Rupr.; [TFG, 240]
Equisetum × litorale Kühlewein, 1845; [TFG, 240]
Equisetum arvense × fluviatile ; [RK, 43]

17.6.2001 (12)

References:

[BONAP]

A Synonymized Checklist of the Vascular Flora of the United States, Puerto Rico, and the Virgin Islands; A data base interface; BONAP U.S. Checklist - 1998; Provided by TAMU-BWG; Texas A & M Bioinformatics Working Group; Based on; Biota of North America Program

[DVF]

Den Virtuella floran; http://linnaeus.nrm.se/flora/welcome.html; Ett projekt vid Naturhistoriska riksmuseet (Stockholm, Sweden).; Even for non-Swedish speaker, the distribution maps on species are nice (map buttons "Norden" and "Norra halvklotet")

[Harri Arkkio]

Finland

[RK]

Hämet-Ahti, L., Suominen, J., Ulvinen, T. & Uotila, P. (eds), 1998; Retkeilykasvio (Field Flora of Finland); Ed. 4. 656 pp.; Finnish Museum of Natural History, Botanical Museum. Helsinki

[RUNEBERG]

Project Runeberg: Nordic literature online; Project Runeberg; Bilder ur Nordens Fauna (Carl Axel Magnus Lindman)

[TFG]

Edgar T. Therry, ?1995; The Fern Guide: Northeasten and Midland United States and Adjacent Canada; [Original publication 1961]

[TSF]

Eduard Thommen, 1951; Taschenatlas der Schweizer Flora

[USGS]

Northern Prairie Wildlife Research Center; http://www.npwrc.usgs.gov/index.htm

If you have corrections, comments or information to add into these pages, just send mail to Markku Savela
Keep in mind that the taxononic information is copied from various sources, and may include many inaccuracies. Expert help is welcome.