203] FLORA OF BOULDER, COLORADO 55 



Class II. ANGIOSPERMAE. 



Subclass 1. MONOCOTYLEDONES. 



Order 6. PANDANALES. 

 Family 8. TYPHACEAE J. St. Hi 1. Cattail family. 



21. TYPHA L. Cattail. 



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



Swales and bogs in the plains, common, 5100-5600 ft. 

 (Daniels, 408). 



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



Family 9. SPARGANIACEAE Agard. Bur-reed family. 



22. SPAEGANITJM L. Bur-reed. 



28. S. angustifolium Michx. [S. simplex angiistifolhim 

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



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

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

 Newfoundland to Oregon; New York to California. 



Order 7. NAIADALES. 



Family 10. ZANICHELLIACEAE Dumort. Zanichellia 

 family. 



23. POTAMOGETON L. Pondweed. 



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

 pondweed. 



Owen's lake; Boulder lake, 5300 ft. (Daniels, 683). 



New Brunswick to Washington; Florida to California. 



293^. P. alpimis Balbis [P. rufescens Schrad.]. Alpine pond- 

 weed. 

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

 Nova Scotia to Alaska ; New Jersey to California. 



