Geranium Madrense n. sp. 



Caespitose, coarse; stems and petioles retrorsely almost his- 

 pid ; leaves sparsely pilose; inflorescence g-landular-hispid ; root 

 leaves sparsely hairy, many, with petioles 6-8 inches long-, blade 

 al)out 2-3 inches wide, reniform, with rounded and open sinuses, 

 5-lobed and lobes cuneately again 2-5-lobed and these inr 

 cised, all apiculate, nerves about 10 from top of petiole, promi- 

 nent and conspicuously sinuous and with branches sinuous 

 above ; stem leaves few, sessile or nearly so and deeper incised, 

 little reduced ; peduncles about 1 foot long and then umbellate- 

 Iv few-branched, these with 2-5 stout pedicels all about 1 inch 

 long, erect and not hooked ; sepals 6 lines long, elliptical, 

 5-nerved, with a mucro 1 line long, purple; fruit Ij-^ inches 

 long, with lobes at base about 3 lines high and as wide ; beak 

 slender 3^ inch wide ; petals bright-purple, about 1 inch long, 

 verv broad, about 2-3 times the sepals, not reflexed. Meadow 

 \-allev and Chuichupa, Chihuahua, Mex., 7,000 feet alt., in 

 meadows. Sept. 17, 1903. 



Rhamnus serrata var. scopulcrum n. var. 

 A low shrub with the habit of R. Californica ; twigs purplish, 

 but mostly covered with a whitish bloom or scale, season's 

 twigs densely velvety ; leaves 2-3 inches long, narrowly ellipti- 

 cal-lanceolate and acuminate, closely and finely serrulate, cu- 

 neate to truncate at base, 3-S lines wide, glabrous above; vel- 

 \'ety below, not revolute, prominently pinnate-veined ; petioles 

 2-3 lines long, stout; peduncles none; flowers 1-3 at each node: 

 pedicels in fruit nearly as long as the petioles and slender; 

 fruit oblately obovoid and depressed. 2 lines wide, 

 vVseeded. This differs from R. serrata in the velvety not vis- 

 cous lenves with obtuse base. Near Chuichupa, Sierra Madre 

 Mts.. Chihuahua. Mex., in the upper end of Guayanopa Canvon 

 at 5,000 feet alt., in the Lower Temperate Life Zone, Sept.' 23. 

 1903. ' F 



Mimosa canonis n. sp. 



Very tall and strict herbs with coarselv striate stems; pin- 

 nae many pairs, about 20, leaflets broadlv linear, ly^ lines 

 long, glabrous; fruiting peduncles stout, 2-3 inches long; flow- 

 ers m heads ; leaves 3-4 inches long ; whole plant spineless and 

 smooth : pods linear, 3-4 inches long, 3 lines wide, smooth, long- 

 beaked, abruptly mrrowed below and then 2>^ lines wide; 

 nerves thin, sparingly beset with white bosses representing the 

 bases of prickles, nearly straight, many in a head. Guayanopa 



