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amount of pubescence and different foliage. The genus Agrimo- 
nta@ was monographed by Wallroth in his “ Beitrage zur Bo- 
tanik,” i. 1-61 (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. 1. f. 3. 
(1842). 
Smaller and more slender than A. striata, villous-pubescent at 
least below. Larger leaflets 3-5, obovate, obtuse or sometimes 
acutish at the apex, narrowed or cuneate at the base, dentate, 
114-5 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 czspitose, 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 Bepes s 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 Sivm rigidius, 
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 7iedemannia vigida, Coult. and Rose. 
PTILIMINUM, Raf. Neogen. 2 (1825). 
Discopleura, DC., Mem. Omb. 38 (1829). 
