ROSACEOUS GENERA. 239 
tricts of the South, there occur several excellent subspecies to be 
distinguished. Those proposed below are western. 
B. HETERODOXA. Stems and slender flowering branches deep 
red-purple, the latter sparsely hispid, otherwise glabrous, but 
pedicels with also a short pubescence: leaves very diverse, the 
lowest 3-foliolate, those next them simple, deeply 3-parted, the 
uppermost slightly lobed to merely ovate; the margins of all 
incise-serrate, all deep-green and plicate-rugose above, white 
tomentose beneath: calyx hispid and glandular, segments 
triangular, acute. 
Woods at Clarke, Indiana, 29 May, 1897, L. M. Umbach, 
U. 8. Herb. 
B. AMPLISSIMA. Stem and branches vivid green, sparsely both 
hispid and with short fine gland-tipped hairs: foliage pinnately 
3-foliolate, thin, very ample, odd leaflet ovate, 34 inches long, 24 
inches wide, coarsely and doubly crenate, all green on both faces 
when mature, only the youngest hoary beneath: pedicels hispid 
with many short and few long and spinescent hairs all gland- 
tipped: calyx sparsely aculeate and pubescent, its segments ovate, 
acuminate. 
Warren’s Woods, Brookings Co., S. D., 17 June, 1893, Thorn- 
ber, U. S. Herb. 
B. ELEGANTULA. Stem and branches nearly glabrous, a few 
short scattered hispid hairs seen under a lens: leaves very thin 
and delicate, 3-foliolate, on slender petioles sparsely short-aculeo- 
late and finely glandular-pubescent; odd leaflet ovate, acumi- 
nate, 2 inches long, all regularly and most elegantly double- 
serrate, the teeth all very acute, lower face whitish with very fine 
tomentum: pedicels glandular-hispid; calyx sparsely aculeolate, 
its segments ovate, but with greatly elongated acumination. 
Pokegama Lake, Minnesota, June, 1891, J. H. Sandberg, n. 
214, as in U. S. Herb. 
B. Irascrca. Stem and branches almost completely devoid 
of both bristles and pubescence, the whole, even to the pedicels, 
` appearing glabrous: odd leaflet 2 inches long, rhombic-ovate, 
all three simply and somewhat crenately serrate, of thin texture 
