1917] Weatherby,— Color Forms of Impatiens biflora 115 
Most nearly related to R. speciosa Wenderoth, from which it differs 
in its dense retrorse pubescence, its much broader and thinner stem- 
leaves (practically uniform in size and shape with these of the stolons, 
instead of much narrower and longer as in R. speciosa), and its outer 
phyllaries which are rather densely pubescent on the inner as well as 
outer face. Also close to R. speciosa var. Sullivantii (Boynton & 
Beadle) Robinson, which however has a sparse harsh pubescence if 
any on the stem, thick leaves, thick blunt phyllaries scarcely pubes- 
cent on the upper side, and always apically ciliate pales. 
Gray HERBARIUM. 
COLOR FORMS OF IMPATIENS BIFLORA. 
C. A. WEATHERBY. 
THE common jewel-weed produces an unusually interesting series 
of color variations. In their range of hues they are very similar to 
those of the garden “nasturtium” (Tropaeolum majus L.) and, were 
it worth while, could doubtless be made to develop, under cultivation, 
as many shades and gradations of color. Indeed, Professor Fernald 
tells me of one locality where, possibly through the juxtaposition and 
crossing of several forms, something of the sort has already happened 
in the wild. The forms known to the writer and described below 
appear, however, to represent the main lines of variation. The 
flowers, in the dried specimens cited, have in most cases lost all their 
color, but the collectors’ notes give the needed information. 
IMPATIENS BIFLORA Walt. Perianth orange, with more or less 
numerous, usually crimson spots. The typical and common form. 
Forma citrina, f. nov. Perianthiis flavis modo Citri Lamonum 
fructus, coccineo-maculatis. Perianth lemon-yellow, with crimson 
spots. Connecticut: Moist thicket, Thompson, Sept. 7, 1908, 
Bissell & Weatherby (TYPE, in Gray Herb.). 
Forma albiflora (Rand & Redfield), comb. nov. I. fulva, f. albiflora 
Rand & Redfield, Fl. Mt. Desert 88 (1894). “Flowers white or cream- 
color,” the spots often paler than in the typical form, then pink or 
brownish red. Maine: Southwest Harbor, Rand; Farmington, 
Aug. 15, 1894, Fernald, “white with pink spots.” MASSACHUSETTS: 
