466 RYDBERG: STUDIES ON THE Rocky MOUNTAIN FLORA 
ASCLEPIADACEAE 
Astephanus utahensis Engelm., Philibertella cynanchoides (Dec.) 
Vail and P. heterophylla (Engelm.) Vail, Asclepias erosa Torr., A- 
macrosperma Eastw. and A. labriformis Jones have been collected 
in Utah; Acerates lanuginosa (Nutt.) DC., in the Yellowstone Park; 
Asclepias ovatifolia, in Saskatchewan; and Asclepias mexicana Cav., 
in Idaho. 
CONVOLVULACEAE 
Cressa erecta Rydb. sp. nov. 
Stem branched, with a woody base, erect, 2-3 dm. high with 
erect branches, silvery canescent; leaves elliptic, 5-7 mm. long, 
acute at both ends, sessile, silvery canescent; pedicels in fruit 
6-10 mm. long, usually exceeding the leaves; bracts elliptic, 3 
mm. long; sepals 4-5 mm. long, oval, equaling the corolla-tube; 
corolla white; lobes elliptic, acutish, rarely spreading; filaments 
filiform, slightly pubescent; ovary densely pubescent; styles fili- 
orm. 
This differs from C. depressa Goodding in the erect stem and 
branches, the more silvery pubescence, the longer pedicels (in C. 
depressa shorter than the leaves) and the comparatively narrower 
corolla-lobes. 
Utau: Near Beck’s Hot Springs, Salt Lake County, July, 
1905, Garrett 87of (type, in herb. N. Y. Bot. Gard.). 
CUSCUTACEAE 
Cuscuta curta (Engelm.) Rydb. sp. nov. 
Cuscuta Gronovi curta Engelm. Trans. St. Louis Acad. 1: 507. 
1859. 
In saline districts of Utah and Colorado. 
POLEMONIACEAE 
Dr. Brand* reduces the amply distinct Phlox muscoides Nutt. to 
* Pflanzenreich, Vol. 4, Fam. 250. The following pages contain a good deal of 
criticism of Dr. Brand’s monograph of this family. The monograph is one of the 
best, differing in that respect from most works done by Europeans on American 
plants. The citation of publication is very carefully prepared, correct, and com- 
plete; but Dr. Brand has fallen into the same errors as 9 foreigners do, in not 
trying to find.out exactly what the types are or what plants the descriptions really 
represent. He made definite abana op es bess to oxeier ra sepa never -_ oie 
inade synonyms from mere guesses. My Mountain 
8 f the 
Pacific Slope species are considered, probably as many more incon- 
gruities could be pointed out. 
