[From the Bulletin of the Torkey Botanical Cluu, 34 ; 35-50. 1907. 



Studies on the Rockv Mountain flora— XVII i 



Per Axel Rydberg NiJW 1; > 



WOT A NIC. 



Pedicularis siifolia UAKi^eiN 



Perennial with a rootstock ; stem glabrous, 3-6 dm. high, 

 leafy ; leaves pinnately divided to the midrib, glabrous, 5-1 5 cm. 

 long; divisions lanceolate, narrowed at the base, 1-4 cm. long, 

 more or less doubly serrate-dentate ; spike short, 3-8 cm. long ; 

 bracts linear, oblong, or lanceolate, entire or slightly toothed ; 

 calyx glabrous or with a few scattered hairs, 8-9 mm. long, its 

 lobes lanceolate ; corolla yellowish, nearly 2 cm. long ; galea 

 about 8 mm. long, curved, upper portion helmet-shaped with a 

 short conical beak ; lip 4 mm. long, rather deeply 3-cleft with 

 rounded lobes. 



This species is somewhat intermediate between P. Canbyi and 

 P. bracteosa. In habit it resembles closely the latter, but the 

 corolla is that of the former, having an evident although short 

 beak. It grows in the mountains of western Montana and Idaho 

 at an altitude of 600-1200 m. 



Montana: Grant Creek, June 7, 1897, M. J. Elrod and assist- 

 a7its gy. 



Adenostegia ciliosa 



Annual ; stem more or less branched, puberulent, purplish, 

 1.5-2 dm. high; leaves 2-3 cm. long, finely puberulent, 3-5- 

 cleft into filiform divisions ; flowers in small headlike clusters ; 

 bracts similar to the leaves but with broader bases and more or 

 or less hirsute-ciliate with white flat hairs; calyx nearly 1.5 cm. 

 long, more or less ciliate ; its divisions about 5-ribbed ; corolla 

 about I 5 mm. long ; galea 5-6 mm. long, hooded at the apex ; 

 lip nearly as long, pubescent without ; stamens 4, anthers 2- 

 celled, sparingly short-bearded. 



This species is probably most closely related to A. ramosa 

 Nutt., but is easily distinguished by the ciliate bracts and calyces. 

 It grows on dry mesas at an altitude of about 2000 m. 



Wyoming : Spread Creek, 1897, Frank Tzveedy §4.^. 



Castilleja arcuata 



Perennial, more or less tufted at the base ; stems erect, strict, 

 usually simple, 2—4 dm. high, shining, yellow or tinged with 



35 



