MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 



439 



heads large, 1.5—2 cm. high, in few-headed cymes terminating the 

 branches ; bracts linear, more or less broadly scarious-margined ; 

 rays few and very short; achenes light-colored, angled, glabrous. 



A member of the triangularis group, but differs from the rest in 

 the branched habit, the larger heads, and in the leaves, of which the 

 lower are cordate, and the upper ovate, none triangular. 



Montana: Clendennin, 1882, R. S. Williams^ 20J. 



Idaho: Quartzburg, 1892, il/iss Mabel M 11 If or d. 



Senecio serra Hook. Fl. Bor. Am. i : 332 [Syn. FL i^ : 386; Man. 



R. M. 208]. 



In wet places in the mountain regions, at an altitude of 1000— 

 2000 m. 



Montana: Tiger Butte, 1886, F. W. Anderson^ 2^6; Bozeman, 

 1887, F. Tweedy^ 334 i Melrose, 1895, Rydberg, 28^j ; Jack Creek, 

 July 14, 1897, Rydbcrg & Bessey, 324^; Forks of the Madison, July 

 26,52^5; Belt Mountains, 1882, Canby. 



Senecio serra andinus (Nutt.) ; Senecio andinus Nutt. Trans. Am. 



Phil. Soc. (II.) 7: 409 [Bot. Cal. i : 414] ; Senecio serra integri- 



usciilns Gray, Syn. Fl. i" : 387 [Man. R. M. 208]. 



In similar situations. 



Montana: Helena, 1889, F. D. Kelsey ; Silver Bow Co., Mrs. 

 Helen Dolman; East Gallatin Swamps, 1896, Flod7nan, p/j/Lima, 

 1895, Rvdberg; 2832 ; Forks of the Madison, July 26, 1897, Rydberg 

 d- Bessey, ^246 ; Belt Mountains, 1883, Scribner, iig. 



Yellowstone Park : Turbid Lake, 1885, Tzveedv, 7/7; 1873, 

 C. C. Parry, lyo. 



* Senecio Solidago. 



Tall, apparently over i meter high, glabrous, very leafy, and much 

 branched; leaves from oval-deltoid to lanceolate, 6-10 cm. long, 

 rather thin, coarsely dentate with salient teeth, short-petioled or sub- 

 sessile ; panicle very large and branched ; heads rather small, about 

 8 mm. high ; bracts linear, yellowish, much shorter than the disk ; 

 rays pale yellow ; achenes small, only 2 mm. long, glabrous. 



Apparentl}^ nearest related to .5'. serra, but has much broader 

 leaves and a much longer panicle. The plant strikingly resembles 

 Solidago serotina in general habit, hence the name. 



Montana: Tiger Butte, 1886, R. S. Williams, 264; Alhambra, 

 1892, F. D. Kelsey (both specimens in the herbarium of the Montana 

 Agricultural College, at Bozeman). 



