498 



Leaves densely white-woolly lioinath when young, hnt wholly glabrous when 

 mature. The leaves of my specimens are UTiusnally thin. Custer, altitude 1,70() m., 

 June 5 and .Inly lij; Hermosa, altitude 1,100 m.,.Iuno 24; Elk Canyon, altitude 1,300 

 m.. .lune L'9 (No. r.80). 



Sorbus sambucifolia (Cham. «.V Schlecht. ) Kn-m. Syn. Mon. iii, 39 (1?<47); Cham. 

 A- Schlecht. Linuiea, ii. 36 (1827). 



-Vtu'ording to Mr. Kunkel, an enterprising lumberman, this is growing in a canyon 

 on the roail between Rnnkel's sawmills and Sturgis, I did not see any specimens in 

 the r.laok Hills. 



SAXIFRAGACEiE. 



Saxifraga cernua I.. J>p. PI. i. 103 (1753). 



A few slender s)>ecimens iii bud, eollected al)ove .'>ylv;in Lake, iiltitude 2,000 nj., 

 July 8 (No. fiSl). 



Tellima parviflora Hook. Fl. Bor. Amer. i, 239 (1833). 



Rare: Custer, altitude 1,700 mi., .lune 4; west of Lead City, altitude 1,800 m., 

 July 4 (NO.G82). 



Heiichera hispida Tursli. Fl. i. 1S8 (1S14). 



Common: Hot Sjirings, altitude 1,100 m., .luno 8; Roehtbrd, altitiule 1,700 m., 

 July 12 (No.r>S3). 



Heuchera parvifolia Nutt. ; Torr. & Gr. Fl. i, 581 (1840). 



( )nly one specimen secured at Rochford, altitude 1,700 m., .Inly 12 (No. 084). 



Parnassia parviflora DC. Prodr. i, 320 (1824). 



P^reneh Creek, below Custer, altitude 1,600 m., August 1 (No. 685). 



Ribes setosum Lindl. Trans. Ilort. Soc. vii. 243 (1830). 



lliis 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 

 bri.stly prickles.'' It has been taken for /». oxijcanthoules L. {Ii. 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. I'' has 

 been found in northAvestern Nebraska by Professor Swezey, of the Uuiversit ' of 

 Nebraska, who was the first to recognize it as K. sctositm Lin<ll. 



Most specimens in herbaria under the name 7i'. xctoKitm are not 7^. xeiosum of Lind- 

 ley, but of Gray,' which is a variety of A', hiciintre Poir. or a related species. It 

 resembles 7i'. setosum Lindl. somewhat in general h;ibit. but the llowers and fruit are 

 different. 



Very common in the lilack Hills: Custer, jiltitude 1,7<K» to l.i'OO m.. May L".'; in 

 fruit, Minnekahta, altitude 1,300 m., August 5 (No. 686). 



Ribes oxycanthoides L. S]>. PI. i, 201 (1753), var. 



I ])lai e tliis )d:int doubtfully with this species, from which if difiers in the longer 

 peduncles and the longer calyx tube. It may also be a form of the preceding, but is 

 nearly without thorns. The leaves are more deei>ly deft, with acutisli lobes, smooth 

 and shining above, finely .mil sparingly ]iubescent beneath, in form resembling some- 

 what those of I,', tnneum. The (lowers are as in /»'. mlosum, \. e., the ealyx eylindrical, 

 a little longer than the narrowly oblong calyx lobes; spines and bristles very rare 

 and small : jietioles cili.ited by a few fine-fringed bristles. Immature fruit smooth, 

 yellowish; mature fruit not seen. The stem and leaves of /»'. aurnim, with the 

 pubescence and llowers of I{. setosum, would fairly represent uiy plant, which may, 

 perhaps, be a hybrid between the two. 



' XV, t, 1237(1829). 



«x.271 (1876), 



"Proc. Amer. Aea<i. viii,:«3 (1872). 



