ocr., 1899.] PLANTS. 159 
The form here referred to is the dwarf Iligh Sierra one, given under 
cespitosum by Coville, in his ‘Botany of the Death Valley Expedition’ 
(p. 145, 1893), 
Vaccinium arbuscula (Gray) |== Vaccinium caspitesum var. arbuscula 
Gray]. 
Common in moist places in the Transition zone from Wagon Camp 
down to Warmeastle Soda Springs at tbe south base of the mountain. 
This species seems to be distinct from the dwarf boreal JV’. cespitosum. 
It averages about 2 feet (60 centimeters) in height and has red branches 
and decidedly larger and thicker leaves than the alpine caspitosum. 
Whether or not the latter is the typical form is another question. The 
zone position of V. arbuscula is probably Canadian and Transition. 
Vaccinium occidentale Gray. Blueberry. 
Common in the Canadian zone in some of the canyons, and in the 
marsh at Wagon Camp, where it fruited early. 
Fraxinus oregana Nutt. Oregon Ash. 
Occurs sparingly in the upper Sacramento Canyon, but was not 
observed about the actual base of the mountain. 
Gentiana simplex Gray. Blue Gentian. 
Common in the Canadian zone swamp at Wagon Camp the first half 
of August. (Identified by Professor Greene.) 
Apocynum pumilum (Gray) Greene. 
Common in suitable places throughout the Transition zone, from 
which it pushes up a short distance into the lower edge of the Cana- 
dian. With other Transition zone species it was found ou a warm 
slope in Mud Creek Canyon at 6,700 feet. (Identified by Professor 
Greene.) 
Cycladenia humilis Benth. 
Common in places in the Hudsonian zone, but very local. It occurs 
plentifully on the top of Red Cone, a short distance northeast of Wagon 
Camp, at an elevation of about 6,600 feet; on a red lapilli hill which 
forms a part of Red Butte, just east of ‘The [South] Gate,’ and on both 
sides of Mud Creek Canyon alittle below true timberline. The highest 
altitude at which it was observed was 8,700 feet on a southwesterly slope 
on the west side of Mud Creek Canyon. Cycladenia humilis is a curious 
and rather striking plant. It usually has four large entire leaves, sug- 
gesting those of Polygonum neiberryi, and bears a pair of conspicuous 
red tubular flowers followed by two curious seed pods, which are very 
long and lie side by side, one above the other, like the barrels of 1 Win- 
chester rifle. (Identified by Miss Mastwood.) 
Gilia aggregata (Pursh) Spreng. 
Common thronghout the ponderosa pine forests of the Transition zone 
and sometimes seen in the lower part of the Shasta fir forest, where its 
