Description ²

• Leaves/stem: sterile stem; rough, green, no branches, leaves; reduced to a sheath, surrounds stem with a black band around the base, sheath; pale gray, 14 to 50 black teeth that fall off as the season progresses, sometimes leaving just a black ring around top of the sheath
• Spores: Fertile stems; like sterile stems but with 1-inch cone at tip, cones rounded at tip but with abrupt, small, sharp point
• Fruiting season: Summer
• Height: 2-4 feet
• Habitat: meadows, stream and river banks

Fontes e Créditos

1. (c) Amadej Trnkoczy, alguns direitos reservados (CC BY-NC-SA), http://www.flickr.com/photos/32503151@N05/3189256898
2. (c) Minnesota Scientific and Natural Areas, alguns direitos reservados (CC BY-SA)

Mais informações

• BioDiversity4All taxon page
• Biodiversity Heritage Library
• BOLD Systems BIN search
• Calflora
• CalPhotos
• eFloras.org
• Flora of North America (beta)
• Global Biodiversity Information Facility (GBIF)
• Go Botany
• HOSTS - a Database of the World's Lepidopteran Hostplants
• IPNI (with links to POWO, WFO, and BHL)
• Jepson eFlora
• Maryland Biodiversity Project
• NatureServe Explorer 2.0
• NBN Atlas
• New Zealand Plant Conservation Network
• OregonFlora.org
• SEINet Symbiota portals
• The Jepson Herbarium
• Tropicos
• USDA PLANTS database
• VASCAN by Canadensys
• World Flora Online

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