203] FLORA OF BOULDER, COLORADO 55 



Class II ANGIOSPERMAE. 



Subclass 1. MONOCOTYLEDONES. 



Order 6. PANDANALES. 

 Family 8. TYPHACEAE J. St. Hil. Cattail family. 



21. TYPHA L. Cattail. 



27. T. latifolia L. Broad-leaved cattail. 



Swales and bogs in the plains, common, 5 100-5600 ft. 

 (Daniels, 408). 



North America, except the far north: Europe: Asia. 



Family 9. SPARGANIACEAE Agard. Bur-reed family. 



22. SPAKGANIUM L. Bur-reed. 



28. S. angnstifolium Michx. [S. simplex angustifolium 

 (Michx.) Engelm.]. Narrow-leaved bur-reed. 



Floating in a pond at Glacier Lake, 9000 ft. (Daniels, 620). 

 Also Redrock lake, 10100 ft. (Ramaley and Robbins). 

 Newfoundland to Oregon; New York, to California. 



Order 7. NAIADALES. 



Family 10. ZANICHELLIACEAE Dumort. Zanichellia 

 family. 



23. POTAMQGETON L. Pondweed. 



29. P. lonchites Tuckerm. [P. fluitans Roth.] Long-leaved 

 pondweed. 

 Owen's lake; Boulder lake, 5300 ft. (Daniels, 6S3). 

 New Brunswick to Washington; Florida to California. 



29^. P. alpinus Balbis [P. nifescens Schrad.]. Alpine pond- 

 weed. 

 Redrock lake, 10100 ft. (Ramaley and Robbins.). 

 Nova Scotia to Alaska ; New Jersey to California. 



