(iSi) 



Mertensia Alaskana Britton, sp. now 



Similiar to M. -paniculata, 5 dm. high, or more. Stem 

 and branches glabrous ; pedicels 1—3 cm. long, very slender, 

 appressed-pubescent with whitish hairs : leaves papillose- 

 pubescent above, sparingly pubescent or glabrous beneath, 

 the lower oblanceolate, 6—10 cm. long, acute, with margined 

 petioles, the middle ones oblong-lanceolate, sessile, the upper 

 lanceolate, acuminate : corolla 1.5 cm. long, the limb about the 

 length of the tube: calyx 5-6 mm. long, cleft nearly to the 

 base, the lobes lanceolate, acuminate, bristly-ciliate, other- 

 wise glabrous or very nearly so ; style not exserted. 



Fort Yukon, Alaska, Antoine Soule, 1865 (type) ; Daw- 

 son (Williams), a white-flowered form ; Mackenzie's River, 

 Onion, Kennicott and Hardisty, 1861-62. 



Family Labiatae. 



Dracocefhalum farvijlorum Nutt. Dawson (Williams) ; 

 Fort Selkirk (Tarleton). 



Family Scrophulariaceae. 



Veronica alfina L. Summit of White Pass (Williams). 



Pcntstemon cristatus Nutt. Five-finger Rapids (Wil- 

 liams ; Tarleton) ; Lake Lebarge (Tarleton). 



Euphrasia Americana Wetts. River bank above Fort 

 Selkirk (Tarleton). 



Castilleja pallida (L.) Kunth. Above Dawson (Williams) ; 

 above Fort Selkirk, near Indian River, and Five-finger Rap- 

 ids (Tarleton). Mr. Tarleton's specimens from above Fort 

 Selkirk and Five-finger Rapids (nos. 80 and Sob) differ from 

 the others in being villous to the base and may represent 

 another species. 



Pedicularis. eufhrasioides Stephan. Dawson and mouth 

 of Bonanza (Williams) ; Five-finger Rapids (Tarleton). 



Pedicularis Sudctica Willd. Five-finger Rapids (Tarle- 

 ton). 



Family Orobanchaceae. 



Thalesia fasciadata (Nutt.) Britton. Fort Selkirk (Tarle- 

 ton). 



