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Epilobium palustre L.  

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Family: Onagraceae
marsh willowherb
[Epilobium lineare Fr., moreEpilobium oliganthum Baker, Epilobium palustre var. grammadophyllum Hausskn., Epilobium palustre var. labradoricum Hausskn., Epilobium palustre var. lapponicum Wahlenb., Epilobium palustre var. longirameum Fernald & Wiegand, Epilobium palustre var. oliganthum (Michx.) Fernald, Epilobium pylaieanum Fern., Epilobium wyomingense A. Nels.]
Epilobium palustre image
  • Gleason & Cronquist
  • Resources
Vascular plants of NE US and adjacent Canada
Perennial from very slender, nearly naked stolons, each ending in a turion from which the stem of the next year arises; stems slender, simple or branched, 1-5(-8) dm, canescently strigose-puberulent in the infl, but the middle and lower part usually more sparsely strigillose-puberulent, often in vertical strips; lvs all opposite, or the upper more often alternate, sessile or nearly so, sometimes with axillary fascicles, broadly linear to more often lanceolate or lance-linear, 2-7 cm נ2-15 mm, entire or nearly so, often revolute, not very hairy, the lower side commonly puberulent along the midrib but otherwise glabrous or nearly so, the upper side glabrous or with a few scattered hairs esp. along the midrib; infl usually nodding in bud, but soon erect; fls short-pedicellate in the upper axils, the pedicels elongating to 0.5-2.5 cm in fr; pet white to pink or lilac, 4-6 mm, evidently notched; 2n=36. Wet low ground; circumboreal, s. in Amer. to Pa., Wis., Colo., and Nev. July, Aug. (E. oliganthum)

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.
Epilobium palustre
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