367 



amount of pubescence and different foliage. The genus Agnmo- 

 nia was monographed by Wallroth in his " Beitrage zur Bo- 

 tanik," i. i-6i (1842), and a much larger number of species 

 recognized than have since been admitted. There is at least one 

 of his North American species there first described, which seems 

 to me perfectly good ; this is : 



Agrimonia microcarpa, Wallr. Beitr. i. 33, 39, t. i. f- 3- 

 (1842). 



Smaller and more slender than A. striata, villous-pubescent at 

 least below, Lar<^er leaflets 3-5, obovate, obtuse or sometimes 

 acutish at the apex, narrowed or cuneate at the base, dentate, 

 1)^-5 cm. long, glabrous or nearly so above, generally pubescent 

 along the veins beneath ; raceme very slender, the flowers short- 

 pedicelled, less than two lines broad ; petals slightly exceeding 

 the calyx-lobes ; fruit smaller, about 3 mm. long. 



In dry soil, Pennsylvania (according to Wallroth), Maryland 

 (Rusby), to Florida (Chapman), west to Kentucky (Short) and 

 Louisiana (Carpenter). 



Mamillaria NOTESTEINII, n. sp. 



Stems oval, simple or caespitose, about 3 cm. in diameter. 

 Tubercles nearly terete and about 6 mm. high ; spines 12-18, 

 white, becoming gray with age, weak and slender, 8-12 mm. 

 long, spreading, pubescent throughout. Usually each tubercle 

 bears a central spine which is longer and stouter than the others, 

 and is frequently tipped with pink ; flowers 15-25 mm. in diame- 

 ter, ash-gray, tinged and penciled with a delicate pink. Petals 

 broadly linear-oblong, mucronate tipped ; fruit obovoid ; seeds 

 black, globose, pitted. 



Found in gravelly soil, near a small creek, in the vicinity of 

 Deer Lodge, Montana, by Prof F. N. Notestein, June,4th, 1891. 



OxYPOLIS, Raf Neogen. 2 (1825). 



Tiedemannia, DC. Mem. Omb. 51, t. 12 (1829). 

 Archemora, DC. loc. cit. 52 (1829). 

 Rafinesque characterizes the genus and cites Siuni rigidins, 

 L. as the type, so there can be no question' about what he had in 

 mind. This plant is well known to be Archemora rigida, DC, 

 and Tiedemannia rigida, Coult. and Rose. 

 Ptiliminum, Raf Neogen. 2 (1825). 



Discopleiira, DC, Mem. Omb. 38 (1829). 



