1899 | BRIEFER ARTICLES 135 
‘Arabis Crandallii.— Cespitose perennial, 3°" high, pale green and 
hoary puberulent throughout, with minute stellate interplexed hairs: 
stems numerous (20 or more), slender, terete, from a loosely mul- 
ticipital caudex: root single, vertical: radical leaves oblanceolate- 
spatulate, 1.5 to 1.8 long, 3 to 4™ broad, entire, acutish, cuneate- 
attenuate at the base, concolorous, minutely stellate-tomentulose on 
both surfaces, I-nerved ; the cauline (about 8 on each stem) similar but 
shorter and more oblong, sessile by a subamplexicaul base: pedicels 
ascending or appressed, 5 to 6™™ long, slightly enlarged at the summit : 
sepals oblong, obtuse, stellate-puberulent, often purplish-tinged, 3™ 
long: petals obovate, cuneate, white, roseate-tinged, twice as long as 
the calyx : pods erect, slender, subtorulose in dried specimens, 2.5 to 
4" long, 1™" broad, flattened ; seeds (immature) uniseriate in each cell 
and nearly or quite as broad as the septum. 
Collected by Professor C. S. Crandall at Cimmarron, Montrose co., Col- 
“Ee attitude 2100", 18 May, 1898, no. 6. Type in herb. Gray. 
Was nid Species most early approaches the Canadian A. Macounn 
“s which, however, it is clearly distinguished by its fine stellate 
pubescence, shorter erect pods, and larger leaves. 
$-foliolate j oe 
fololate in the manner of AL. sensitiva (a diminutive fourth leaflet occa- 
Pre aa leaflets glabrous, glaucous, coriaceous, oblong, entire, 
very He nes, acute to rounded at the apex, subcordate and 
Pe a the base, oblong, 3 to 10™ long, nearly half as broad ; 
35 ‘ag i slender, wiry, 3 to 8™ long ; secondary rhachises 2 to 
along the ae uncles slender, ascending, fascicled by 3’s, 4’s, and 5’s 
fated, ora Pen of the branch, and forming a loose, elon- 
» teem y iad inflorescence, leafy towards the base: heads 
Perfect aie a diameter (incl. the long stamens), roseate ; flowers 
date. ces calyx campanulate, less than 1" long, cuspi- 
corolla 2.7™™ long, glabrous, 3-4-nerved and 3-4- 
ate-deltoid, a third as long as the tube: pods 2.5 to 
‘and wholly unarmed both as to valves and replum, 
ity ; too acuminate at the tip, 3-4-jointed, Indian-brown 
> Valves falling away in segments. 
