f ge to he the case in the five ee pitts Ee in the 
. D. Clarkae has usually three bracts, but sometimes two, 
or five, inclosing usually three akenes. The bracts of D. 
Bs Clarkae also appear more saccate and hooded. ‘The akenes of 
Dz Wetherilli although immature, are 8 to 9 min. long and 
e akenes of D. Clarkae are only 5 to 6mm. long and 2mm. wide, 
d not including the toothed margin. This margin is only one half 
the width of that of D. Clarkae. The akenes of D. Wethertili 
are oblong, while those of D. Clarkae are distinctly obianceolate. 
In my paper in MUHLENBERGIA 4: 1, I stated that there 
were only two plants seen. One of them was collected for speci- 
mens. Recently ] took a week end trip in search for the other 
plant, and found it dried up, but with the bracts and akenes still 
adhering to the stems in great abundance. The root is about 
an inch and a half in diameter at the crown, and tapers into the 
ground about a foot, with several aaditional small lateral roots 
on it. It is coarse and fibrous in texture. Although I have an 
abundance of seed, yet only a very small proportion of them con- 
tain an embryo. 
Dicoria Clarkae has been distributed to many of the lead- 
ing herbaria in the United States, but I still have some speci- 
mens which I shall be pleased to send upon application. Seeds 
also could be sent to those who have facilities for growing plants. 
Those who have specimens of D. canescens, D. Brandegei, 
D. paniculata, or D. Wetherillt, could perhaps. favor me by ex- 
change. ‘The representatives of the genus may now be consid- 
ered as follows: 
D. CANESCENS T. & G. Bot. Mex. Bound. 86. A/. 70. 1859. 
Emory’s Notes of a Military Reconnoissance 143. 1848, under 
Dicoris, without description. 
Type locahty: Sandy deserts of the Gila and Colorado. 
as 4mm. wide, not including the toothed margin, while mature. 
