10 transactions of the [oct. 7, 



Aster lateriflorus (L.). 



Solidago lateriflora, L. Sp. PI. ii. 879 (1753), fide Gray, Syn. 



Flor. 143 and 187. 

 Aster difusus, Ait. Hort. Kew. iii. 205 (1789). 

 A. miser, Ait. 1. c. 



Senecio Hallii, n. sp. Nearest to S. camis, Hook. Stems 

 4-6 inches high, simple; stems, leaves, and scales of the invo- 

 lucre densely and persistently white-woolly all over ; leaves 

 about one inch long, spatulate, the blade about equalling the 

 petiole; heads ^ in. high, |— | in. broad, with the rays expand- 

 ed ; rays about a line wide ; achenes (immature) about a 

 line high, angular, glabrous. 



Yellowstone National Park, on geyserite ; collected bv the 

 Kev. Dr. Charles H. Hall, of Brooklyn, N. Y., in June,"l888. 

 Dr. Hall collected also the S. canus, Hook., in the same 

 region ; and it was the great difference in appearance of the two 

 plants that suggested to me a careful comparison of their cha- 

 racters. I fortunately found that a type of Hooker's species was 

 preserved in Dr. Torrey's herbarium, and saw at once that the 

 plant here described was different. I have evidence that it has 

 been collected in other parts of the Kocky Mountain region. It 

 is one of the most beautiful and interesting of the genus, its ex- 

 traordinary amount of woolly tomentum fully justifying Dr. 

 Hall's exclamation on finding it, — *' looks as if it were done up 

 in blankets." 



Vaccinium DisoMORPHUM, Bigel. Fl. Bost. Ed. 2, 151 (1824), 



not of Michaux. 

 V. fuscatum, Gray, Man. Ed. I. 262 (1848), not of Alton, fide 



Syn. Flor. Gamopet. 23. 

 V. corymhosum, L. var. atrococcum, Gray, Man. Ed. 5, 292 



(1867). 

 V. corymhosum, L. var. disocarpum, B. S. P. Prel. Cat. Anth. 



N. Y. 32 (1888). 



Field observations on this shrub, extended over several years, 

 have now convinced me that it is specifically distinct from 

 F. corymhosum. Indeed, I have not been able to find any inter- 

 mediate forms. Its characters were distinctly pointed out by 

 Dr. Bigelow, being essentially the small cylindric corolla of a 

 decidedly pink color, contracted at the throat so as to become 

 somewhat ovate (5 mm. long); the light-colored bark which 

 tends to become shreddy; the tomentose lower leaf surfaces; 

 and the perfectly black berries without bloom. On Staten Isl- 

 and and in the Pocono region, where the two species grow com- 

 monly in company, they can always be distinguished at a glance, 

 whether in flower or fruit. I should say that they are quite aa 

 distinct as V. Pennsylvanicum and V. Canadense. 



