VOL. III. | Notes on Gnothera. 249 
i 
while the sprihg seedlings come from seeds that did not germinate 
the previous season, or perhaps from seeds ripened on the fall seed- 
lings. These flowers. open about sunset and are not fertilized in the 
bud, for the pistil greatly surpasses the stamens. I have examined 
hundreds of pods and have always found two rows of seeds in each 
cell, eight rows in all. The seeds are round and pitted. 
Ginothera trichocalyx Nutt. Of this I have collected several 
forms that vary with reference to the bud, the appearance of which 
seems to be the chief difference between this and C&. albicaulis. I 
cannot determine to which species several belong, though the 
Grand Junction @. ¢rvichocalyx and the Denver @. albicaulis seem 
quite distinct. They all have lance-linear seeds, grooved where 
_ they press against their companions, and often mottled with red. 
I found the mottled seeds on the Grand Junction form of CG. tricho- 
- calyx and the Denver form of G&. albicaulis. In both, the seeds of 
well developed pods have two rows in‘each cell. The plants from 
Grand Junction have buds that are conspicuously white vil- 
lous and decidedly blunt; the tips are not in the least free This 
seems to be the typical form, as I said before, of @. trichocalyx. 
The form from Thompson’s Springs, a station on the Rio Grande 
Western in Utah, has villous buds that are acuminate but without 
free tips. I have the same from along McEImo Creek, in south- 
_ western Colorado. The form from Moab in Utah has smooth buds, 
acuminate and with free tips. The form from Court House Wash, 
on the road to Moab, has buds slightly villous, with tips acuminate 
and partially free. These forms are all annuals or biennials. 
The Denver form of CG. albicaulis has sparingly villous pods, 
acuminate and with free tips. It would appear that a specific dif- 
ference between these two must be sought in some other organ. 
Gnothera albicaulis is distinctively a perennial, but that might arise 
from its situation. It is always found not far from water, while @. 
___ trichocalyx inhabits desert regions. 
In comparing the Denver GZ. albicaulis with the forms of @. 
trichocalyx I find the leaves to be quite dissimilar, the former hav- 
ing leaves that are either sparingly or deeply toothed and canescent 
with appressed hairs; the latter having pinnately divided smooth 
leaves with the segments narrow and linear. However, in looking 
over Watson’s Revision, I find that var. runcznata and var. Califor- 
- nica of Gz. albicaulis have pinnatifid leaves; so the difference in the 
