32 Rhodora [FEBRUARY 
which it is quickly distinguished by the loose hispidulous pubescence 
of the stem and pedicels, the smaller flowers and the very slender 
acutish pods. In the pubescence of its stem the Bic plant approaches 
the Rocky Mountain 4. Holboellii, var. Fendleri, Watson, but that has 
loosely pubescent or merely ciliate basal leaves, those of the plant 
from Bic being densely invested (pannose) with minute whitish 
stellate hairs, its roseate flowers are much larger, and its less refracted 
broader and blunt pods are on glabrous pedicels. 
The Bic plant, which is obviously an isolated relative of a high- 
northern and Rocky Mountain group of species, is here proposed as 
new; and itis a great pleasure to associate with it the name of its 
discoverer, an indefatigable and accurate student of the northeastern 
flora. 
Arabis Collinsii.— Perennial: stems slender, 1 to 3 dm. high, 
numerous, from a subligneous base, caespitose, erect, slightly glauces- 
cent, below hispidulous with pale simple or forked hairs, above glab- 
rate or glabrous: basal leaves densely rosulate, oblanceolate to 
narrowly obovate, acutish, slender-petioled, 1 to 2.5 cm. long, pan- 
nose on both surfaces with minute canescent stellate hairs, the petiole 
ciliate especially at base; cauline leaves lanceolate, acute, auriculate 
or sagittate at base, more loosely pubescent, the margins often ciliate, 
the uppermost glabrate: flowers at first erect, on stellate-hispidulous 
pedicels: calyx 3 mm. long; the oblong loosely stellate sepals with 
white-margined rounded tips: petals white, becoming pink-tinged in 
age, 4 or 5 mm. long, glabrous throughout: fruiting pedicels strongly 
refracted, loosely pubescent, 5 to 8 mm. long: pods glabrous, very 
slender, 2.25 to 4 cm. long, 1 to 1.5 mm. broad, linear, subacute, 
straight or barely arcuate; the median rib of the valves prominent 
only toward the base: seeds rather crowded in 2 rows, suborbicular 
to broadly oblong, 1 to 1.2 mm. long, very narrowly winged above. — 
Dry limestone-conglomerate ledges, headland in the harbor of Bic, 
Rimouski County, Quebec, July 18, 1904 (J. F. Collins & M. L. 
Fernald). Type in Herb. Gray. 
GRAY HERBARIUM. 
