206 BOTANY. 



Canons and banks of creeks from Western Nevada to the Uintas ; 4,500- 

 10,000 feet elevation ; June-Seistember. (719.) 



Maceokehynchus geandifloeus, T. & Gr. Perennial, slightly webby- 

 pubescent throughout; leaves 5-15' long, linear-lanceolate, runcinately 

 toothed or laciniate with long acuminate teeth ; scapes 1-2° high ; heads 

 very large ; outer involucral scales foliaceous, broadly ovate-oblong, ciliate- 

 pubescent ; the inner ones narrovs^er and with slightly scarious margins ; 

 achenia strongly 10-ribbed, one-fourth the length of the very slender beak, 

 and halt as long as the white soft capillary pappus. — Oregon and California. 

 Foot-hills near Salt Lake City ; 4,500 feet elevation ; May. (720.) 



Maceoeehynciius heteophyllus, Nutt. Annual, pubescent, often 

 somewhat caulescent ; leaves 2-5' long, linear-spatulate ; the earlier ones 

 entire or slightly toothed ; later ones commonly laciniate with a few short 

 acute teeth ; scapes 4-9' high ; involucral scales imbricated in about 3 rows ; 

 the outer ones somewhat hairy and shorter than the smooth oblong-lance- 

 olate inner ones ; achenia fusiform, with ten corky or winged often undulate 

 ribs ; the filiform beak 3-4 times longer than the body of the achenium, and 

 considerably longer than the very delicate pappus. — The present specimens 

 have considerably longer achenia and pappus than those collected in Califor- 

 nia by Brewer, and while the ribs of the achenia are rounded and corky 

 they show nothing of the undulation so strongly insisted upon by Nuttall. 

 Oregon and California. West Humboldt Mountains, Nevada, on the hills 

 about Salt Lake City, and on Antelope Island, Utah ; 4,500-5,500 feet 

 elevation; May, June. (721.) 



Taeaxacum Dens-leonis, Desf. Common throughout the Northern 

 States and "sparingly naturalized" in the Southern, (Chapman.) Arctic 

 America, and along both sides of the Rocky Mountains, (Hooker,) to Colo- 

 rado, (" truly indigenous," Hall & Harbour.) Prof Brewer states that he has 

 never seen it in California. The dandelion is named by Josselyn in 1672 in 

 a list " of such plants as have sprung up since the English planted and kept 

 cattle in New England." Europe, Western Asia, and Northern Africa. 

 City Creek Canon in the Wahsatch, and in the meadows of Salt Lake Val- 

 ley ; probably introduced. (722.) 



Taeaxacum palustre, DC. Very smooth ; leaves lanceolate or oblong- 

 spatulate, entire, sinuate, or slightly runcinate, usually shorter than the 

 scape ; " scales of the involucre not corniculate, " the outer ones lanceolate, 



