VOL. IV.] Contributions to Westeini Botany. 273, 



spreading at tip; keel straight, Vv'ith tip incurved a little more 

 than 90°, obtuse, purple at tip, exceeding calyx teeth by two 

 and one-half lines; pods mottled, colored, or plain, sessile, very 

 acutely long or short-pointed with incurved tip, much inflated, 

 broadly to narrowly ovate, inclined to be retuse at base, cross 

 section round or a little wider laterally, sulcate ventrally nearly 

 to the middle and the contiguous sides not adherent, sulcate 

 dorsally to beyond the middle so that the sulci meet but there is 

 no septum between even when young, though the parts adhere, 

 with age they separate, the contiguous sides of the dorsal sulcus 

 adhere when young forming a false septum so that the pod seems 

 to be only slightly sulcate dorsally, but as the pod matures the 

 sides separate and so it becomes didymous, apex of pod not two- 

 celled; mature pods chartaceous to membranaceous, immature 

 pods slightly pubescent within with wall one-fortieth inch thick. 

 Neither peduncles, stems nor petioles perceptibly sulcate; stipules 

 adnate, triangular, not small, ciliate and inclined to be lacerate 

 on the edge, acute, lower not larger; flowers loosely short spicate; 

 peduncles none to four inches long; flowers three to ten; pods 

 prostrate as well as the flowers; whole plant very glabrous. 

 . This is a mountain plant coming down the canons to 7500 feet 

 altitude, grows on loose, gravellj^ places by the roadsides and is 

 not abundant; it never grows in alkaline places. The pods are 

 destitute of any internal sap at all times. It begins to bloom 

 about May i, and continues for a month; the pods are mature by 

 the first of July. 



By way of amplification of what I have said about the 

 confusion in species of the A. le7itiginosus and airiipes group 

 (Zoe 4, 28) I append some notes on species kindly sent me by 

 Mr. Brandegee. 

 / Astragalus near to oocarpiis San Thomas, Lower California^ 

 April 26, '93. Same as the following except more robust and 

 tall; peduncles not longer than leaves, stout; stem coarsely 

 sulcate; leaves six inches long; petiole none; leaflets about 

 twenty pairs, an inch long; pods more acute; flowers white, four 

 lines long, narrow, calyx the same; keel abruptly rounded^ 

 straight, nearly equaling the oblanceolate, scarcely ascending 

 wings; banner erect, small, barely a line longer than the keel 



