Flora of Denver. 49 



401. Yucca angustifolia PURSH. (SOAP-WEED. SPANISH- 

 BAYONET.) With bayonet-shaped leaves and a raceme of droop- 

 ing flowers which are thick and large, cream color and usually 

 tinged with pink. Common on the plains. Summer. 



402. Calochortus Gunnisoni WATSON. (MARIPOSA LILY.) 

 This was found near Clear Creek, about six miles from the city 

 by Albert Eaton. He reports it as very abundant. 



403. Zygadenus Nuttallii GRAY. Bulb like an onion, bur- 

 ied deep, stem with leaves crowded near the base, few-leaved 

 above. Raceme densely flowered on the long scape. On the 

 plains. Rather common. Spring. 



COMMELYNACE^E. (Spiderwort Family.) 



404. Tradescantia Virgmica L. (SPIDERWORT.) Stems 

 leafy, flowers deep blue in a sessile umbel. Common. Spring 

 and earl y summer. 



JUNCACE^. (Rush Family.) 



405. Liizula spicata DESF. Dr. Smith. 



406. Juncus Balticus DETH. var. montanus ENGELM. Com- 

 mon. 



407. Juncus bufonius L. Common along Cherry Creek 

 and the Platte. 



408 Juncus longistylis TORR. Dr. Smith and B. H. Smith. 



409. Juncus nodosus L. var. megacephalus TORR. Dr. 

 Smith and B. H. Smith. 



TYPHACE^E. (Cat-Tail Family.) 



410. Typha latifolia L. (CAT-TAIL.) Common in the 

 ponds and marshes. 



411. Sparganium eurycarpum ENGELM. (BuR-REED.) 

 Steins tall and stout; clusters of fruit globular, lower on stalks, 

 upper sessile. In a marsh near Valverde. Summer. 



