IOS THE AMERICAN MIDLAND NATURALIST 



< 'alceolaria verticillata (Ort.) Kuntze. Green Violet. 

 Hillsides. Frequent. May 15. 



Loasaceae. Loasa Family. 

 Mentzelia oligosperma Nutt. Stick Leaf. 



Hillsides and dry banks. Frequent. June 25. 

 Cactaceae. Cactus Family. 

 ( 'actus missouriensis (Sweet) Kuntze. Ball Cactus. 



Manhattan. Hills. Occasional. 

 Opuntia humijusa Raf. Prickly Pear. 



Manhattan. Hillsides and sand hills. Occasional. June 5. 

 Lythraceae. Loosestrife Family. 

 Amviavia coccinea Rottb. 



River banks, etc. Common. Aug. 10. 

 Rotala ramosior (L.) Koehne. 



Manhattan. Wet places. 

 Lythrum alatum Pursh. Loosestrife. 



Wet places; often below springs. Frequent. July 30. 

 Onagraceae. Evening Primrose Family. 

 Isnardia palustris L. Marsh Purslane. 



River batiks. 

 Ludwigia alternifolia L. Seedbox. 



Blue Rapids. River bank. 

 Jussiaea diffusa Forskl. Primrose-willow. 



Manhattan. On water or mud, common in old river channel 

 Epilobiuni lineare Muhl. Narrow-leaved Willow-herb. 



Manhattan. Wet places. 

 Epilobium adenocaulon Haussk. Northern Willow-herb. 



Manhattan. Wet places. 

 Onagra slrigosa Rydb. Common Evening Primrose. 



Field and roadsides. Common. July 30 (Aug. 2) 0. biennis 

 of Hitchcock's list. 



Oenothera laciniata Hill. Cut-leaved Evening Primrose. 

 Dry soil. Common. May 15 (13)- The var. grandis 

 Britton once collected at Manhattan. 



Harimannia speciosa (Nutt.) Small. White Evening Primrose. 

 Roadsides and especially along the water course of ravines. 

 Common. May 25 (27). 



Megapterium missouriense (.Sims) Spach. Large Evei 

 Prinn 1 



