Macbride and ee — Plants from Idaho 69 
corolla flava 1.5-2 em. longa, tubo 1-1.5 cm. longo, galea labium 
inferius paullo superante, labiis lobis obtusis 1.5 mm. longis. — 
Ipano: dry sagebrush flat, Robinson Bar, Custer Co., July 23, 
1916, Macbride & Payson, no. 3387 (TYPE, Gray He rb.). 
The character of subequally cleft calyx and short galea place 
this plant in the group typified by C. longispica and C. oresbia and 
it is probably most closely related to these species in spite of the 
fact that the short calyx and long corolla suggest C. curticalyz. 
The habit is nearly that of C. rustica from which the short calyx 
and galea distinguish it. 
Castilleja ardifera, spec. nov. ake circa dm. alta; caulibus 
plus minusve piloso-hispida im mprim s ad apicem; foliis numerosis 
viridibus sed utrinque aliquid dd i ou aceendatoas 3-nerviis 
sine exceptione integris caulinis inferioribus lineari-lanceolatis 
acutis paullo reductis; bracteis oblongo ovatis integris inferioribus 
ubique viridibus vel saepius ad apicem coloratis, opine hain 
colore valde variabilibis sed plerumque flavis; calyce 15-23 
longo antice et postice subaequaliter fisso lobis doit dentatis; 
corolla circa 2 em. longa, tubo circa 1 em. longo, galea elongata 
calycem paululum vel multum superanti; labiis lobis acutis circa 
1 mm. longis. —IpaHo: Cape Horn, Custer County, July 30, 
1916, Afacbride & Payson, no. 3524 (Tyrer, Gray Herb.). 
This species is very closely related to C. lutescens. The bracts 
and upper leaves of that species, however, are always trifid and 
the galea is less than one half as long as the tube. The entire 
leaves are suggestive of the group of closely related species typified 
by C. confusa but that group is characterized by red-colored bracts 
which are nearly always more or less cleft and by elongate galeas 
which much exceed the calyx. C. ardifera is remarkable in the fact 
that it at times displays great variation in the length of calyx but 
not in the length of corolla so that, although the corolla and calyx 
are usually subequal, the former is sometimes distinctly the longer. 
The plants were common in the vicinity of Cape Horn where 
they grew in very wet meadow-lands and at once attracted notice 
by the marvellous variation in the color of the bracts. Although 
predominantly yellow these presented every conceivable tone of 
soft reds and even brown and white, so that the general color effect 
of a patch of the plants was indescribably pleasing. 
