Lentibulariaceae: Utricularia cornuta L.
(horned butterwort)
There are 11 species of Utricularia in Nova Scotia and all are insectivorous. Flowers range in colour from white to yellow, rose-purple to violet. Horned bladderwort is a large terrestrial Utricularia with fragrant, bright yellow flowers. Underground stems bear linear thread-like leaves with minute traps located along the leaf margins. The brownish flowering stalk ranges from 3 to 35 cm tall with up to 9 flowers (more often 2-3 flowers). Flowers are subtended by a sessile bract plus 2 scales on the flowering stalk below the inflorescence. The upper calyx lobe gradually tapers to a point, the lower lobe being more abrupt and acute. Corolla petals are fused to form a bilabiate flower with the lower lip is spreading and helmet-shaped with an awl-shaped spur curving downward and outward. Utricularia cornuta is common in Nova Scotia in bogs and on wet pond borders. Flowering time is June to September. It occurs in all provinces except British Columbia, is critically imperiled in Alberta and Prince Edward Island, imperiled in Saskatchewan, vulnerable in Manitoba, not assessed in Labrador, and secure in Ontario, Quebec, New Brunswick, Nova Scotia, and Newfoundland. It also occurs from the Great Lakes south to Texas and Florida.
Sources | Selected Web Resources | Line Drawing
Click on images for larger versions.
| JY 23, 2008. Lunenburg County: Indian Path Common. Photographer: CAP. | |
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Selected Web Resources
- Taxonomic Status (ITIS) Copy the species name above and paste it into a form on this ITIS Canada page to confirm the nomenclature and list synonyms.
- NatureServe Explorer Copy the species name above and paste it into a form on this page to view a map of its distribution within North America and its conservation status by province and state.