May i 2, 1909 61 



membranaceous, entire, lobes long*-acuminate: leaflets haiiy be- 

 neath, glabrous above, ab i:t [O mnii long and 4 nun. wide, vari- 

 able in form, lowest ones smaller, obovate and cuneate, upper 

 ones oblong-lanceolate, irregularly and sharply dentate-margined 

 and tapering to a cuspidate apex; petioles hairy, 2-3 cm. long: 

 peduncles 4-6 cm. long, erect, hairy; heads terminal, 2 cm. in di- 

 ameter when young, becoming larger at maturity: flowers pur. 

 pie, completely reflexed in age l>v the deflexion of the pedicels, 

 which are 1 mm. long ami hairy: calyx tinged with purple, 

 densely pubescent, tube 2 mm. long, teeth 5, unequal and vari- 

 able, frequently curved at tip, two 4 mm. long, two 3 mm. long, 

 one 1.5mm. long, ionerved, 5 strong main ones running up to 

 the apex of the teeth, and 5 intermediate weak ones: vexillum 

 14 mm. long and 6 mm. wide, apex rounded and emarginate 

 with a prominent tip 1 mm. long; blade of wings 6 mm. long 

 and 2 mm. wide, aurieled at base, long acuminate at apex, claw 

 of wings 5 mm long; blade of keel oblong, 4.5 mm. long, 2 mm. 

 wide, with a short abrupt beak: ovary not well developed in our 

 specimens, but sparingly hairy, about 5 mm. long, with a style 

 of the same length. 



The type, which is deposited in the Nevada Agricultural 

 Experiment Station herbarium, was collected at the summit of 

 China Cap, Oregon, at 8600 feet altitude in granitic soil. It is 

 Mr. Win. C. Cusick's no. 3190, bearing the date July 30, i<) 7. 

 Its nearest ally in habit would be T. CovillcL and T. origanum 

 in the character of the flowers. 



Explanation of the Plate 



1. Wings, about four times natural size. 



2. Vexillum, a little more than three and a half times nat- 

 ural size. 



3. Keel, about three and a half times natural size. 



4. Calyx, slightly more than four times natural size. 



5. Flower, natural size. 



Nevada Agricultural Fxperiment Station. 



