56 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Shrubs. 



Berberis nervosa. Near Farmington. 



Cornus occidciitalis. Near Spokane. Wash. 



Corylus calif or nica. Near Kettle Falls, Wash. 



Echluoimnax horridutu. 



Gaultheria oratifolia. Friest Lake. 



Rubus niacropclalus. 



Riibus spectabilis. Priest Lake, very rare. 



Herbs. 



Antennaria hwrellii. Cedar Mountain. Spangle, Wash. 



Claytonia parvifoUa. PriesftLake; Packsaddle Peak. 



Coilitisia grand iflora. Troy. 



Collomia hetcrophylla. Wlessner Peak. 



Corallorhiza striata. Cedar Mountain. 



Erigcron speciosus. 



Fritillaria laiiccolata. Farmington Landing. Palouse City, Wash. 



Heuchera cylbidrica. Near I-^wiston. 



Hosackia bicolor. 



Hoicellia aqttatilis. Lake Tesemini. 



Lilium parrifloruvi. Lake Pend Oreille. 



Maianthemuni bifoUum kamtscfiaticutn. Priest Lake. 



Micranipclis oregana. Uuiatilla River, Oreg. Kettle Falls, Wash. 



Mitella caulescens. Farmington Landing. 



Polygonum bistortoidcs. Near Moscow. 



Folystichuni mnnitum. Cedar Mountain. Also in Blue Mountains. 



Psoralea phy nodes. One station near Troy. 



Saxifraga oregaiia. Priest Lake. 



StenantMum occidentale. Priest Lake. 



Trientalis latifolia. Wlessner Peak. Blue Mountains, Wash. 



Vaccinium ovalifolium. Priest Lake. 



In this connection the fact may also be pointed out that in several 

 cases the species of the coast region are replaced in Idaho by very 

 close allies. JThis fact is illustrated by the following pairs : 



Coast region of Washington : Northern Idaho : , 



Alnus oregana. Alnus tenuifolia. 



Philadelphus gordonianus. Philadelphus lewisii. 



Potentilla gracilis. Potentilla blaschkeana. 



Ranunculus orthorhynchus. Ranunculus platyphyllus. 



Ribes divaricatum. Ribes irriguuni. 



Salix lasiaudra. Salix lancifolia. 



Sambucus callicarpa,. Sambucus melanocarpa. 



Spiraea donglasli. Spiraea menziesii. 



Viola sempervirens. Viola orbiculata. 



Perhaps the most significant of the above lists is that of the species 

 which are now so rare in Idaho, but abundant in western Washington. 

 These species must be either relatively newcomers, just obtaining a 

 foothold, or else old inhabitants, now. on the verge of extinction, so 

 far as this immediate region is concerned. The latter hypothesis 



