

78 LEAFLETS. 



Farewell Gap, at 10,600 feet in the mountains of southern 

 Cahfornia, C. A. Purpus, 1897, his n. 5229 J^. It has the 

 habit of the A, platysperma group, but with rather too much 

 stellate pubescence, and the pods also too narrow. 



Formerly every simple-stemmed western ^ra^zV wearing the 

 aspect of a rather tall biennial, and having erect small petals 

 and long narrow straight pods, was named A. Holboellii. A 

 number of segregates from that medley have long since been 

 offered, and accepted, and others are here indicated. 



Arabis nemophila. Apparently biennial, the solitary stem 

 erect, simple, more than a foot high, firm but not stout, 

 unusually leafy up to the very short raceme ; herbage green, 

 with barely a glaucescent tinge : basal leaves 1 to 1/^ inches 

 long, of oblong-lanceolate entire or remotely toothed limb and 

 rather narrow petiole, all thinly and minutely stellate but not in 



the least hoary; cauline leaves H to 1/i inches long, oblong, 



acute, sagittate-auricled, glabrous: flowers few, small, white; 

 sepals green, wnth few stellate hairs at summit ; petals twice 

 as long, white or pinkish : pods straight, extremely narrow, 

 3 inches long, perfectly erect above short ascending pedicels : 

 seeds in one row, immature. 



Sequoia National Forest, Calif., July, 1908, Dr. Anstruther 

 Davidson; specimens on sheet 612,692, U. S. Herb. 



Arabis inthrposita. Perennial, wnth stem 1/^ to 2 feet 

 high, rigidly erect from amid several suberect leafy offsets ; all 

 basal leaves 1 to 1 ^ inches long, the narrowly ellipsoidal 

 entire blades and narrow^ly winged petioles of about equal 

 length, both faces substellate-canescent ; cauline leaves oblong, 

 sessile, sagittate-auriculate, these and the stem less stellate : 

 flowers not seen : pods narrowly linear, straight, erect, 2 

 inches long; hardly a line wide; seeds thick, oval, widely 

 winged at the upper end, narrowly so up and down the sides. 



A good fruiting specimen on sheet n. 444,616 of U. S. 



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collected by W 



