(i73) 



date, petioles as long as the blades or much longer: scapes 

 erect, 2-4 dm. tall: panicle narrow, 5—15 cm. long, the 

 branches erect or nearly so : pedicels glandular-pilose : sepals 

 2-2.5 mm - l° n g> triangular-ovate, reflexed : corolla white; 

 petals oblong to oblong-lanceolate, 3-5 mm. long, sometimes 

 slightly accrescent : filaments filiform, longer than the petals : 

 capsules 12-13 mm - higH ; follicles erect, nearly distinct. 



Along mountain streams, near Indian River, August 3, 

 1899 (Tarleton, no. 176). 



Related to Saxifraga punctata L. ; but the leaves with 

 blades manifestly longer than broad, the narrow panicle with 

 its short branches and the lower leaf- like bracts, and the 

 larger fruit are some of the characters which readily separate 

 this species from its relative. 



Chrysosplenium tetrandrum Fries. Klondike below Bo- 

 nanza Creek (Williams) ; White Horse Rapids (Tarleton). 



Family Parnassiaceae. 



Parnassia -palustris L. Walker Gulch (Williams) ; above 

 Fort. Selkirk (Tarleton). 



Parnassia Kotzebuei C. & S. Fort Selkirk and near 

 Selwyn River (Tarleton). 



Family Grossulariaceae. 



Ribcs riibrum L. Lindeman and Bonanza Creek (Wil- 

 liams). 



Ribcs Hudsonianum Richards. Near mouth of Bonanza 

 Creek (Williams). 



Ribes lacustre Poir. West Dawson (Williams). 



Ribes irriguum Dougl. Five-finger Rapids (Tarleton). 



Family Rosaceae. 



Spiraea densifora Nutt. Klondike-Indian Divide (Tarle- 

 ton) ; Mouth of Bonanza (Williams). 



Luetkea pectinata (Pursh) Kuntze. Summit of White 

 Pass (Williams). 



Potentilla Pennsylvanica L. Five-finger Rapids (Tarlet 



Potentilla nivea L. White Horse Rapids (Tarleton). 



Potentilla Monspclicnsis L. Dawson (Williams). 



