Summary ²

Pilularia globulifera, or pillwort, is an unusual species of fern native to western Europe, where it grows at edges of lakes, ponds, ditches and marshes, on wet clay or clay-sand soil, sometimes in water up to 30 cm (12 in) deep. It has a pea-shaped 4-chambered sporocarp, each chamber formed from a modified leaf and containing several sori bearing both macrosporangia and microsporangia. The species is thus heterosporous.

Sources and Credits

1. (c) Christian Fischer, some rights reserved (CC BY-SA), http://commons.wikimedia.org/wiki/File:PilulariaGlobulifera5.jpg
2. (c) Wikipedia, some rights reserved (CC BY-SA), https://en.wikipedia.org/wiki/Pilularia_globulifera

More Info

• iNat taxon page
• Biodiversity Heritage Library
• BOLD Systems BIN search
• eFloras.org
• Flora Digital de Portugal
• Global Biodiversity Information Facility (GBIF)
• HOSTS - a Database of the World's Lepidopteran Hostplants
• IPNI (with links to POWO, WFO, and BHL)
• NBN Atlas
• SEINet Symbiota portals
• Tropicos
• World Flora Online

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