454 MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 



fistulose peduncle and violet-purple flowers, sometimes escapes from 

 cultivation. 



Montana: Bozeman, 1897, H. S. Jennings. 



Taraxacum Taraxacum (L.) Karsten, Deutsch. Fl. 1138 [111. Fl. 3: 

 271] ; Leontodon Taraxacmn L. Sp. PI. 798 ; Taraxacum officin- 

 ale Weber; Wigg. Prim. Fl. Holsat. 56 [Syn. Fl. i- : 440; Man. 

 R. M. 222] : T. Dcns-Ieonis Desf. Fl. Atl. 2: 228 [Bot. Cal. i : 



439] • 



Introduced around dwellincrs and along roadsides. 



Montana: Bozeman, 1892, W. T. Shazv. 



Yellowstone Park: Mammoth Hot Springs, 1885, Tweedy, 



Taraxacum latilobum DC. Prod. 7: 146; Taraxacum officinale al- 

 finum Gray, Syn. Fl. i" : 440 [Man. R. M. 222]; not T. al- 

 piniim Koch; T. officinale lividum Gray, 1. c, in part. 

 Taraxacum alpinum of Southern Europe and Western Asia is 

 much smaller, and has nothing to do with our American plant. 

 The latter is not much smaller than T. Taraxacum, from which it 

 differs in the broad outer bracts which are not reflexed, and in the 

 shorter and broader lobes of the leaves. Tiie inner bracts are very 

 slender, often somewhat livid and occasionally slightl}' corniculate at 

 the tip. In the original description the achenes are said to be muri- 

 cate all over and the leaves hirsute on the veins. In the Rocky 

 Mountain plant the achenes are sometimes miiricate only at the apex 

 as in T. Taraxacum, and the leaves are glabrous. The original 

 specimens were from Newfoundland ; the Rocky Mountain plant may 

 be distinct. T. lividum Koch is generally regarded as the same as 

 T. palustre DC. It has very narrow leaves, and the only American 

 specimens I have seen are from Greenland and the Arctic coast. 



Montana: Bridger Mountains, June 15, 1897, Rxdberg & Bes- 

 sey, S2g^ ; Old Hollowtop, Pony, July 7, 32^6 ; Spanish Basin, July 

 28, jsgy; Sheridan, 1892, Mrs. L. A. Fitch; Highwood Moun- 

 tains, 1888, R. S. Williams, 434; Basin, 1892, Kelsey ; Bozeman 

 Pass, 1883, Scribner, i2g. 



Yellowstone Park : Black Tail Deer Creek, 1885, Tweedy, yjj. 



* Taraxacum eriophorum. 



Very small. Scape 2-3 cm. high; leaves 2-3 cm. long, oblanceo- 

 late to spatulate, entire or slightly sinuately dentate, contracted into 



