VOL. I]. West American Plants. 83 
The capsule of AZ. glutinosus has a flexure near the base on the un- 
derside. It is most apparent on the growing ovary. The ‘‘ tuber- 
cular enlargement of the base of the style’’ is not apparent till the 
ripening of the capsule, being produced apparently by the shrink- 
ing of the tissues above and below the point where the style ceases 
to be tubular. 
The latest character brought forward to sustain Diplacus is its 
vernation. This differs from all other species of Mimulus known to 
the writer, but the difference is not nearly as great as Professor 
_ Greene has implied. The lower part of the leaf is somewhat con- 
_ duplicate in AZ, glutinosus as in all the species, the hollowed surfaces 
of the opposite leaves forming a cavity for the growing shoot, the 
_ limb is revolute as stated. In wide leaved Mimuli the limb is more 
or less folded, but in species with somewhat narrower ones as our 
variety of JZ. moschatus it is almost plane, or the edges turned 
slightly backward. 
[Since the note concerning C. rvugosus was in print I have re- 
ceived a flowering branch of the plant from Mr. C. F. Sonne of 
Truckee. It bears evidence of its parentage, being without doubt 
C. prostratus X velutinus, and the first undoubted hybrid between 
_ the §Euceanothus and §Cerastes ever noted. Mr. Sonne failed to get 
fruit although he left flowers for the purpose. It is not probable that 
fruit will form in a hybrid of such dissimilar parents, though hybrids 
between the different species in each section are very common and 
apparently as fertile as any of the species. The only exception 
known to me is C. incanus X papillosus. which occurs occasionally 
on Ben Lomond in Santa County, and in all the examples observed 
failed to set fruit.] - . 
_ * Hybrids in all degrees, to all appearance as fertile as their parents 
"are very common between C. velutinus and the other species, C. co7- 
dulatus, found in the vicinity of Truckee. 
