488 GEOLOGICAL SURVEY OF THE TEEEITOEIES. 



Mulgedium pulcJiellum, Nutt. — Fort Ellis to tke Yellowstone; Fish 

 Creek ; Madison Yalley. 



LOBELIACE^. 



PoiiTEE,ELLA, gen. nov., (by Dr. John Torrey.) 



Calyx 5-cleft ; the tube obconical and adherent. Tube of the corolla 

 entire, cylindrical, straight ; limb bi-labiate ; the upper lip erect, 2- 

 parted ; lower lip of 3 nearly obovate-cuneate, erect lobes. Filaments 

 united their whole length ; anthers included, smooth, the two lower ones 

 with a minute bristle at the tip. Capsule oval- obconical, 2-celled ; pla- 

 centae many-seeded. Seeds elongated, tapering at each end. — A small 

 branching annual, tvith entire linear-lanceolate leaves, and blue, axillary, 

 pedicellate flowers. 



Porterella carnulosa, {Lohelia carnulosa, Hook, and Arn.) — Plant gla- 

 brous, 2-3 inches high,. branching from the base; leaves ^~ an inch long, 

 sessile, acute; pedicels shorter than the leaves; tube of the calyx acute 

 at the base, lobes linear-lanceolate, erect; corolla nearly twice as long 

 as the lobes of the calyx. — Muddy shores of Yellowstone Lake, along 

 with Limosella aquatica, L.; Madison Valley. It has also been found in 

 the Snake country of Oregon. ' The genus is dedicated to Professor 

 Thomas C. Porter, and the diminutive form used because suited to the 

 plant, and also because Forteria is already i^reoccupied by a South 

 American genus. 



Campanulaceje. 



Campanula rotundifolia, L. — Stinking Water Creek ; Fort Ellis to the 

 Yellowstone ; Hot Sulphur Springs. 



Campanula rotundifolia, L., var. linifolia, Gray. — Mud Springs. 

 Speoularia perfoliata, A. D. C. — Ogdeu, tFtah Territory. 



Ericace^. 



Yaccinium Myrtillus, L. — Fort Ellis to the Yellowstone ; Upper Falls 

 of the Yellowstone. 



Arctostaphylos JJva-ursi, Spreng. — Fort Ellis to the Yellowstone. 



Bryantlms empetriformis, Gray, (Proc. Am. Acad., vol. VII. p. 307.) — ' 

 Upper Falls of the Yellowstone. 



Ledum glandulosum, I^utt. — Madison Valley. 



Pyrola rotundifolia^ L., var. incarnata, Hook. — Upper Falls of the 

 Yellowstone. 



Fyrola chlorantha, Swtz. — Yellowstone Lake ; Hot Sulphur Springs. 



Fyrola secunda, L. — Pleasant Valley ; Yellowstone Lake. 



Moneses nnifora, Gray. — Yellowstone Lake ; Falls of the Yellowstone. 



Chimaphila umhellata, JSTutt. — Yellowstone Lake. 



Fterospora Andromedea, Nutt. — Madison Valley ; Upper Falls of the 

 Yellowstone. 



Plantaginace^. 



Flantago eriopoda, Torr. — Mountains south of Virginia City. 



PRIMUL,ACEJ3. 



Primula farinosa, L. — Mountains south of Virginia City; Stinking 

 Water Creek. 



