* 
144 PITTONIA. 
R. cARDIOPHYLLUS, Hook., var. PINETORUM. Stems 
shorter than in the type, seldom 6 inches high, the roots 
much more strongly and copiously developed; stems and 
petioles canescently villous; oval leaves commonly subcor- 
date, sometimes truncate at base, the margins crenate: co- 
rollas larger than in the type, an inch broad, the round- 
obovate petals overlapping: head of achenes never more 
than ovoid, sometimes no more than globose. 
“Abundant in pine woods, at Graham’s Park, 7,800 feet,” 
southern Colorado, 12 May, 1899, C. F. Baker. 
R. EREMOGENES, Greene, var. DEGENER. Much smaller 
than the type, differing from it in exhibiting several stems 
from the root, all ascending ; the fascicle of roots itself larger, 
and the roots coarser: head of achenes and their receptacle 
shorter and more rounded; the individual lacking the 
thick marginal development which I find universal in the 
type, though it was not mentioned in my original diagno- 
sis. 
Obtained in southern Colorado, in the summer of 1899, 
by C. F. Baker, perhaps near Pagosa Springs; but the label 
has been lost. 
R. TRIFOLIATUS, Muhl. fide Schlechtendal, Animadv. ii. 
30 (1820); R. fascicularis, Schl. l. e. as to plate ii, but not of 
Muhlenberg. Ithaslongbeenevidentto me that the R. fascicu- 
remarkably distinct species; and I had the impression that one 
of them wasin need ofa name. There isa dwarf plant of the 
North, very early-flowering, which exhibits a large fascicle 
of almost fusiform fleshy roots; and this appears to be every- 
where recognized as R. faseicularis, and I think correctly. . It 
seems to range from Massachusetts to Iowa and northward. 
Then from the vicinity of New York City westward and 
southwestward along the Alleghanies we have a somewhat 
nearly related several times larger plant having a large 
fascicle of long but merely coarse-fibrous roots, which is also 
