MEMOIRS FROM THE DEPARTMENT OP BOTANY OP COLUMBIA UNIVERSITY 185 



Neiv Mexico: Fendler, No. 206, 1847. 



Colorado: (?) C. S. Crandall, 1892; J. M. Coulter, 1873. 



Wyoming: (?) Aven Nelson, No. 207. 



20. Fragaria Helleri Holz. 



Fragaria sp. Holz. Cont. U. S. Nat. Herb. 3 : 222. 1895. 



Fragaria Helleri Holz. Bot. Gaz. 21: 36. 1896. 



Rootstock rather slender. Leaves very thin, glabrate above, finely silky beneath ; 

 petioles, as well as scapes, very slender, sparingly silky-strigose, or glabrate in age, 5-10 

 cm. long; leaflets rounded-obovate, coarsely serrate, the lateral ones very oblique. Run- 

 ners very slender. Scape 1.5-2 dm. high, very slender, often with a fohaceous unifolio- 

 late bract. Flowers rather large, 1 .5-2 cm. in diameter, on nodding pedicels ; bractlets 

 lanceolate, shorter than the ovate sepals, both acute ; petals nearly orbicular, light rose- 

 color, almost twice as long as the sepals. Mature fruit unknown, but achenes in the 

 unripe ones superficial. 



It is evidently nearest related to F. hracteata, from which it is easily distinguished 

 by the nodding rose-colored flowers. 



Idaho : Sandberg, MacDougal & Heller, No. 508, 1892. 



g. SIBBALDIA L. 



Sibbaldia L. Sp. PL 284. 1753. 



Potentilla Clairv. Man. 166. 1811. 



Dactylophyllum Spenn. Fl. Frib. 3 : 1034. In part. 1829. 



Coelas Dulac. Fl. Hautes Pyr. 303. 1867. 



Hypanthium saucer-shaped or cup-shaped, small. Bractlets, sepals and petals 5. 

 Petals yellow, obovate, cuneate or oblanceolate, scarcely equalling the sepals. Stamens 

 5, inserted not very close to the small receptacle ; filaments filiform but short, inclined. 

 Pistils 5-20 ; style lateral. Ovule and seed attached near the base of the style, ascend- 

 ing and amphitropous. 



Sibbaldia is a genus consisting of small arctic or alpine plants generally with ternate 

 leaves and small flowers in small cymes. All the species are Siberian except the follow- 

 ing which is also found in Europe and North America. ^ 



I. Sibbaldia procumbens L. 



Sibbaldia procumbens L. Sp. PL 284. 1753. 



L. Sp. PL Ed. 2, 406; MilL Gard. Diet. Ed. 8, No. 1; Ait. Hort. Kew. 1: 398; Ed. 



