Robert W. Freckmann Herbarium


  Calylophus serrulatus (Nutt.) P.H.Raven image
Photographer: Emmet J. Judziewicz           

Emmet J. Judziewicz

Emmet J. Judziewicz

Emmet J. Judziewicz

Emmet J. Judziewicz
Family Onagraceae
Calylophus serrulatus (Nutt.) P.H.Raven
yellow evening-primrose, yellow sundrops
Calylophus: Caly Greek for calyx; lophos for "the back of the neck; crest of a hill or helmet"
serrulatus: minutely serrate or saw-toothed
County distribution map- click for detailed distribution maps.
Detailed Distribution:
Town Range Maps
Google Dot Maps
Status: Special Concern
Plant: erect, perennial, to 24" tall forb; stems usually clustered, often woody at the base
Flower: yellow, 4-parted, 1/3"-1" wide, stalkless, sepals with sharply raised midrib, 8 stamens, stigma shield-shaped; solitary from the upper leaf axil; blooms June-July
Leaf:many, narrowly oblong, often toothed
Habitat: dry; prairies, plains, bluffs
(Glossary)

More Information Natural Communities Herbarium Specimens
All Calylophus list Google- Images or Text
Synonyms 
Calylophus australis Towner & P.H.Raven
Meriolix intermedia Rydb. ex Small
Meriolix oblanceolata Rydb.
Meriolix serrulata (Nutt.) Walp.
Oenothera serrulata Nutt.
Oenothera serrulata Nutt. var. typica Munz

         
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