Il8 UNIVERSITY OF MISSOURI STUDIES [266 



158. SAPONARIAL. Soapwort. 



407. S. officinalis L. Bouncing Bet. 



Roadsides and along railroads. 5300-5600 ft. 'Daniels, 725). 

 Not in Rydberg's Flora. 



Europe, thence to North America. 



Order 21. RAN ALES. 

 Family 45. CERATOPHYLLACEAE Gray. Hornwort family. 



159. CERATOPHYLLITM L. Hornwort. 



408. C. demersum L. Common hornwort. 



Owen's lake; Boulder lake, 5200-5300 ft. (Daniels, 614). 

 North America: Europe: Asia. 



Family 46. RANUNCULACEAE Juss. Crowfoot family. 



160. CALTHA L. Marsh marigold. 



409. C. leptosepala DC. [C. rotundifolia (Huth) Greene; 

 C. chionophila Greene]. White marsh marigold. 



Along brooks crossing the Arapahoe Trail from Eldora to 

 Arapahoe Peak, where in the wet tundras it ascends above 

 timberline, 8600-12000 ft. (Daniels, 880). Long's Peak (Coul- 

 ter in Wabash College Herb.). 



Mackenzie to Yukon and Alaska; Colorado to Nevada 

 and Oregon. 



161. TROLLIUS L. Globe flow 



410. T. albiflorus (Gray) Rydb. [T. laxus albiflorus Gray]. 

 White globe flower. 



Along brooks crossing the Arapahoe Trail from Eldora to 

 Arapahoe Peak, where in the wet tundras it ascends above 

 timberline, 9000-12000 ft. ( Daniels, 919). Long's Peak (G 

 ter in Wabash College Herb.). 



Montana to Washington; Colorado to Utah. 



