mm. the stipules and inflorescence of D. Wislizemi. The 1 

 lets are those of the former but three and on a manifest petiole. 

 It also resembles D. Arizonicum. Colonia Juarez, Chihuahua, 

 Mex.. 5.200 feet alt., in the Tropical Life Zone, Sept. 11, 1903. 



Phaseolus angustissimus var. latus n. var. 



Only the uppermost leaflets linear and even these in- 

 clined to have an enlarged but not lobed base which is broad- 

 ly cuneate; middle leaves with narrowly triangular leaflets; 

 lowest leaves with leaflets 6-8 fines long, 3-4 lines wide, trun- 

 cate at base and obtuse at tip, with straight sides, triangular. 

 J; has the characteristic open habit of the species with its very 

 Ic-ng internodes and short petioles. On the Little Colorado 

 River, northern Arizona, below Winslow, June 9, 1890. 



Phaseolus Ritensis n. sp. 



This closely resembles P. retusus but the leaves are rhom- 

 bic-ovate with a very broadly deltoid base and acute and 

 strongly apiculate tip, rarely obtuse, never refuse, smooth; 

 whole plant smooth except the minutely pubescent peduncles 

 petioles and stems; peduncles slender, 1-2 feet long; pods glan- 

 cous, 1>4 inches long, with a sharply falcate and triangular 

 rather long-stipitate base, about 3-4 lines wide, tip strongly 

 beaked: bracts minute. What I take to P. retusus has 

 short peduncles, broad and sessile pods and conspicuous and 

 persistent bracts about 4 lines long. Santa Rita Mts., Arizona, 

 Loiver Temperate Life Zone, 4,500 feet alt., Aug. 24, 1903. 



Phaseolus prorifirus n. sp. 



A tall and climbing herb with rhombic ovate abruptly 

 acuminate leaflets w^hich are about 2 inches long, smooth, en- 

 tire ; peduncles including the rachis not over 4 inches long, 

 stout, several flowered usually with one pod which is 4 inches 

 long and 3 lines wide, narrower below, straight, smooth, with 

 a detlex&d subulate beak 6 lines long. Guayanopa Canon, Sier- 

 ?Jn'c^'^ Mts. Chihuahua, Mex., in the Tropical Life Zone, 

 3,600 feet alt., Sept., 1903. 



^, ^'11^'^5'^1p^^"s serpyllifolius var. argyrocalyx. Wooton 

 lorr. Bull. 2:?. 4^2 is P. Mexicanus Schlect. 



Rubus Madrensis n. sp. 



Stems long and slender and freely branching, glaucous and 

 «^mooth, armed like the petioles with stout, permanent, f!at- 

 tencd, recurved and hooked prides; leaves of 3, ovate-lanceo- 



