498 
Leaves densely white-woolly beneath when young, but wholly glabrous wien 
mature. The leaves of my specimens are unusually thin. Custer, altitude 1,700 m., 
June 5 and July 15; Hermosa, altitude 1,100 m., June 24; Elk Canyon, altitude 1,300 
m,, June 29 (No. 680), 
Sorbus sambucifolia (Cham, & Schlecht.) Roem. Syn. Mon. iii, 89 (1847); Cham, 
& Schlecht. Linnea, ii, 36 (1827). 
According to Mr, Runkel, an enterprising lumberman, this is growing in a canyon 
on the road between Runkel’s sawmills and Sturgis. I did not see any specimens in 
the Black Hills. 
SAXIFRAGACEA. 
759) 
Saxifraga cernua L. Sp. Pl. i. 403 (1753). 
A few slender specimens in bud, collected above Sylvan Lake, altitude 2,000 m., 
July 8 (No. 681). 
Tellima parviflora Hook. Fl. Bor. Amer. i, 239 (1833). 
Rare: Custer, altitude 1,700 m., June 4; west of Lead City, altitude 1,800 m., 
July 4 (No. 682). 
Heuchera hispida l’ursh, Fl. i, 188 (1814). 
Common: Hot Springs, altitude 1,100 m., June &; Rochford, altitude 1,700 m., 
July 12 (No, 683). 
Heuchera parvifolia Nutt.; Torr. & Gr. FI. i, 581 (1840). 
Only one specimen secured at Rochford, altitude 1,700 m., July 12 (No. 684), 
Parnassia parviflora DC. Prodr. i, 320 (1824). 
French Creek, below Custer, altitude 1,600 m., August 1 (No. 685). 
Ribes setosum Lindl. Trans. Hort. Soc. vii, 243 (1830), 
This agrees with the description, also by Lindley, in the Botanical Register,! 
except that the berries are rarely bristly. Dr. Gray says, in the American Natural- 
ist:* ‘‘The young berries, either perfectly smooth and naked, or beset with a few 
bristly prickles.” It has been taken for 2. oryeanthoides 1. (2. hirtellum Mx.), from 
which it differs in that the leaves are finely pubescent, the calyx cylindrical and 
longer than the lobes. The bush is generally more spiny and prickly, and the berry 
sometimes a little bristly, dark purple, and extremely sour even when ripe. J* has 
been found in northwestern Nebraska by Professor Swezey, of the Universit > of 
Nebraska, who was the first to recognize it as R. sefosum Lindl. 
Most specimens in herbaria under the name 2. selosnm are not ht. selosum of Lind- 
ley, but of Gray,® which is a variety of 2. lacustre Poir. or a related species. It 
resembles /?, setosum Lind]. somewhat in general habit, but the flowers and fruit are 
different. 
Very common in the Black Hills: Custer, altitude 1,700 to 1,900 m., May 29; in 
fruit, Minnekahta, altitude 1,300 m., August 5 (No. 686). 
Ribes oxycanthoides L. Sp. I'l. i, 201 (1753), var. 
I place this plant doubtfully with this species, from whieh it differs in the longer 
peduneles and the longer calyx tube. It may also be a form of the preceding, but is 
nearty without thorns. The leaves are more deeply cleft, with acutish lobes, smvoth 
and shining above, finely and sparingly pubescent beneath, in form resembling some- 
what those of 2. aureum. The flowers are as in 2. setosum,1.e., the calyx cylindrical, 
a little longer than the narrowly oblong calyx lobes; spines and bristles very rare 
and small; petioles ciliated by a few fine-fringed bristles. Immature fruit smooth, 
yellowish; mature fruit not seen. The stem and leaves of R, aureum, with the 
pubescence and flowers of FR, setosum, would fairly represent my plant, which may, 
perhaps, be a hybrid between the two. 
i xy, t. 1287 (1829). 
2x, 271 (1876), 
3 Proc, Amer, Acad. viii, 8383 (1872). 
