225 
marked differences between it and the European plant may be 
pointed out. : 
The Rocky Mountain plant referred to P. caruleum, but well 
separated by Professor Greene (Pittonia, ii. 7 5), as P. occidentale, 
has slender rootstocks, the upper part of the stem viscid pubes- 
cent, narrower, lanceolate leaflets and stamens only the length of 
the corolla, the fruiting calyx not nearly as large, and its lobes 
obtuse or obtusish. As pointed out by him, the subterranean 
parts of the true P. cwruleum are widely different from either of 
the American species. He supposes that the Appalachian plant 
is the same as the Colorado species, but Mrs. Van Brunt’s speci- 
mens, taken with the others that I have seen, render that view 
untenable. 
The foliage of P. Van-Bruntie bears considerable resem- 
blance to that of P. reptans, L., but that plant is well marked by 
its diffuse habit, flowers half the size, stamens included, and 
calyx lobed only about one-third of. its length, the lobes obtuse. 
PHLOX KELSEYI, n. sp. 
Many-stemmed from a woody root, the stems spreading, 
creeping or ascending, sometimes 20 cm. long, glabrous or slight- 
ly pubescent above, very leafy. Leaves sessile, oblong or 
linear-oblong, glabrous or nearly so on both sides, 5-15 mm. 
long, 2-4 mm. wide, thick, rigid, the apex mucronately tipped 
with a short spine, the margins revolute, ciliate ; upper leaves 
narrower and longer than the lower ; flowers sessile or short-pe- 
duncled, the peduncles and calyx somewhat glandular- pubescent 
or glabrous ; calyx-teeth subulate, as long as or longer than the 
tube; corolla-tube somewhat exceeding the calyx-lobes ; corolla- 
limb, about r. 5 cm. broad, bright blue or lilac, its lobes obovate- 
cuneate, rounded. : 
Helena, Mont. (F. D. Kelsey); Madison Co., Mont. (F. 
Tweedy, No. 154); Ft. Buford, N. Dakota (V. Havard); Black 
Hills (Jenney). : 
This plant, which I confidently propose as an undescribed 
Species, is apparently nearest to P. /ongéfolia, Nutt., var. Stans- 
buryi (Torr.), forma brevifolia, A. Gray, Proc. Amer. Acad. ee 
ceed changed to sub-var. brevifolia, A. Gray, in the botany ° 
the 4oth parallel and to var. brevifolia, A. Gray in the oT 
cal Flora of North America. From the remarks at the place o 
