1918] NELSON & MACBRIDE—WESTERN PLANTS 59 
length of the tube, 3-4 mm. long: corolla purple; standard minutely 
crenulate at the rounded apex; tip of wings obtusish: pod pubes- 
cent like leaves; seeds 2. 
This clover is most nearly related to T. Lemmonii Wats., but the remark- 
ably long calyx teeth and the very different leaves and sisbaseeice mark it as 
distinct. It is equally at variance, in these and other characters, with 7. 
gymnocarpon Nutt. Miss McDermott (N. Am. Trif. 194. 1910) regards 
. Lemmonii as a variety of the latter. We are not certain as to the justifica- 
tion of this disposition, but these species are certainly more closely related to 
each other than to T. Leibergii. We have had the pleasure of designating 
many of LEIBERG’s specimens as types. It seems fitting, therefore, to call this 
unique clover T. Leibergii, based on his no. 2344 (as represented in the Gray 
Herbarium) from serpentine dykes near Dewey, Oregon, June 21, 1896. 
CLARKTA 
In a former contribution (Bor. Gaz. 61:31-32. 1916) we 
expressed the opinion that the genera Phaeostoma, Godetia, and 
Clarkia should be united, because when all the species concerned are 
considered it is possible to establish an unbroken series on the same 
characters relied upon to maintain the genera as distinct. JEPSON 
in his careful revision of Godetia (Univ. Calif. Publ. Bot. 2:319-320. 
1907) pointed out its technical weakness and, after citing several 
standard works in which the genus is recognized, he wrote “in favor 
of its retention it may be urged that the genus forms a group of 
species which is very compact, that it does not include doubtful 
species, and that its ecological characteristics, habitats, time of 
flowering, and pollination devices are exceedingly uniform.” In 
our judgment the only argument advanced here which will be 
affected in any way by the reduction of Godetia to Clarkia is the 
Statement that “the genus forms a group of species which is very 
compact.” ‘This will not be truly applicable until in reality these 
genera are merged. As they now stand, it is impossible to “key 
out” certain species, even in ENGLER and PRanTL’s Die natiirlichen 
P. ‘flanzenfamilien, a work cited by JEPSON as an argument in favor 
of the maintenance of Godetia. When united with Clarkia, how- 
€ver, we have a genus which, considered in its entirety, represents 
as definite and distinctive a unit as there is in the family. JEPSON 
seems to have realized how unreliable and artificial the generic 
