Glass 2. ANGIOSPERMAE. 



Subclass 1. MONOCOTYLEDONES. 



Order 9. PANDANALES. 



Flowers in elongated terminal spikes ; fruit hidden among bristles. 



Fam. II. Typhaceae. 

 Flowers in globose lateral spikes ; fruit not hidden among bristles. 



Fam. 12. SpargaHiaceae. 



Family 11. TYPHACEAE J. St. Hil. Cat-tail Family. 

 I. TYPHA L. Cat-tails. 



I. Typha latifolia L. In marshes, lakes and streams from Newf. to Wash., 

 Fla. and Calif. ; also Mex., Asia and Europe. — Alt. 4000-6000 ft. — Pagosa 

 Springs; Ft. Collins; common in swamps formed by irrigation. 



Family 12. SPARGANIACEAE Agard. Bur-reed Family. 

 I. SPARGANIUM L. Bur-reed. 



Leaves triangular-keeled at the base. 



Mature achenes truncate at the apex, stalked ; stigmas often i:. 



I. 5*. eurocarpum. 

 Mature achenes acuminate at the apex, sessile ; stigma always solitary ; lower 

 heads peduncled. " 2. S. multipedunculatum. 



Leaves flat throughout, mostly floating. 



Mature heads 12-15 mm. in diameter ; style and stigma of about the same 



length as the achenes. 3. S. angustifolium. 



Mature heads 7-10 mm. in diameter ; style and stigma shorter than the achenes. 



4. S. minimum, 



1. Sparganium eurocarpum Engelm. In marshes and slow streams from 

 Newf. to Wash., Fla. and Calif. — Alt. 4000-5500 ft. — Along Platte River, 

 Denver. 



2. Sparganium multipedunculatum (Morong) Rydb. {S. simplex multi- 

 pedunculatum Morong) In marshes, slow streams and lakes, from the 

 Mackenzie River to Wash, and Colo. — Alt. 6500-10,500 ft. — Gunnison; Cot- 

 tonwood Lake; Kremmling; West Cliff; margin of lake, Buffalo Pass, Park 

 Range; Estes Park; eight miles west of Hebron. 



3. Sparganium angustifolium Michx. In lakes and streams from Newf. to 

 Ore., N. Y. and Calif. — Alt. 8500-11,500 ft. — Near Pagosa Peak; Seven Lakes; 

 Trapper's Lake; Estes Park. 



11 



