1908] Robinson,— Notes on Vascular Plants 33 
PYRUS ARBUTIFOLIA L. f., var. atropurpurea (Britton), n. comb. 
Aronia atropurpurea Britton, Man. 517 (1901). 
AMELANCHIER OBLONGIFOLIA Roem., var. micropetala, n. var., 
fruticosa suberecta plus minusve ramosa, saepissime 2-9 dm. alta, 
foliis, pubescentia, etc., formae typicae omnino simillima, sed floribus 
multo minoribus, petalis vix conspicuis linearibus vel oblanceolato- 
oblongis, vel spatulatis calycem paulo superantibus.— Branching 
shrub, suberect, usually 2-6 dm. high, in leaves, pubescence, etc., 
closely similar to the typical form, but with much smaller flowers, the 
petals scarcely conspicuous, linear, oblanceolate-oblong, or spatulate, 
3-4 mm. long, 1-1.5 mm. wide, scarcely surpassing the calyx.— Mass- 
ACHUSETTS: on ledges, toward the summit of Blue Hill, Milton, G. G. 
Kennedy & M. L. Fernald, 7 May, 1899 (type, in hb. Gray), Bartlett, 
по. 846, 14 July, 1907 (hb. Gray); moors, N antucket, J. R. Churchill, 
30 May, 1904 (hb. Gray): Connecticut: thin soil on ledge of rocks, 
Oxford, E. B. Harger, 12 May and 7 June, 1901 (hb. Gray); dry 
ground, Alewive Cove, Waterford, C. B. Graves, 20 May and 3 July, 
1901 (hb. Gray); dry sandy soil, Southington, C. H. Bissell, 12 May 
and June 13, 1901. This low small-flowered plant is strikingly dif- 
ferent in its small petals from the common and typical form of the 
species, but intermediates have already been observed at several sta- 
tions, as for instance at Wilmington, Massachusetts, by Mr. Hollis 
Webster, which seem fully to justify the view that the smaller-flowered 
form is merely a variety of the larger. 
ACACIA ANGUSTISSIMA (Mill.) Ktze., var. hirta. (Nutt.), n. comb. 
A. hirta Nutt. in Torr. & Gray, Fl. i. 404 (1840). A. filicoides 
Trelease ex Branner & Coville, Rep. Geol. Surv. Ark. 1888, pt. 4, 
178 (1891), and А. filiculoides 'l'release ex Britton, Ill. Fl. ii. 254 
(1897), as to plant, not as to synonymy. | 
Astragalus eucosmus, n. nom. A. orobioides, var. americanus Gray, 
Proc. Am. Acad. vi. 205 (1864). Phaca parviflora Nutt. ex Torr. & 
Gray, i. 348 (1838), not A. parviflorus (Pursh) MacMillan. P. ele- 
gans Hook. Fl. Bor. Am. i. 144 (1830). A. elegans Sheldon, Minn. 
Bot. Stud. i. 154 (1894); Britton in Britton & Brown, П. Fl. ii. 303 
(1897), not Bunge, Sp. Astrag. Geront. ii. 89 (1869). 
Desmopium CANESCENS (L.) DC., var. hirsutum (Hook.), n. comb. 
D. canadensis, var. hirsuta Hook. Comp. Bot. Mag. i. 23 (1835). D. 
canescens, var. villosissimum Torr. &. Gray, Fl. i. 365 (1838). Mei- 
bomia canescens, var. hirsuta Vail, Bull. Torr. Bot. Club, xix. 111 
(1892). 
