12 Notes on Cupressus Macnabiana. [ZOE 
and habitat of this species, showing that it is much more 
widely distributed than has been supposed. 
In the first place, this Cypress is more partial to the banks of 
streams than.to dry slopes and only in moist localities do the 
trees attain any size. Generally it is associated with C. Govent?- 
ana: but among all the trees that have come under my observation 
the two species are distinct and without the slightest trace of 
hybridization. Carl Purdy who has found these two species to- 
gether on Red Mountain in Mendocino County tells me that, 
there, they seem to interniingle. 
On the stage road between Hopland and Highland Springs, on 
the eastern slope of the dividing ridge, not very far from the sum- 
mit, Isaw C. Macnadbiana for the first time. It startled me by 
its pale and strange appearance. ‘This first tree was one of the 
largest seen and grew along the creek bordering the road. From 
there to within three miles of Highland Springs these cypresses 
occurred sparingly along the creek, associated generally with C. 
Goveniana, At one place, quite a dense grove of small trees 
appeared to be climbing up the hillside. ‘These were from five 
to fifteen feet high, pyramidal in outline, with the lowest branches 
sweeping the ground. The large trees lose this symmetry, be- 
come loosely branched and rise to a height of from thirty to forty 
feet, with a diameter near the base of the trunk, of between one 
and two feet. 
A week later, on the road from the toll-house on Mt. St. Helena 
to Middleton, in Napa County, not far from the summit of the 
ridge, I again found a patch of C. Goveniana on the hillside, near 
the road. I wondered whether the other species was to be found 
along the creek that could be seen far below at the base of the 
hill, and, upon investigation, discovered a few scattered trees 
there, but genuine representatives of the species. Several years 
ago Mr. John Mc. Lean had brought specimens of this cypress 
from the same range of hills, which he had collected on the road 
from Calistoga to the Etna mines and had presented to the 
Herbarium of the California Academy of Sciences. 
In this collection, also is a specimen collected oy Dr CO. C. 
Parry at Chico, Butte County, 
