156 University o.f California Publications in Botany [VOL. 9 



Pringle, September 23, 1882 ; Angora Lake, Tahoe, 7,700 feet, Smiley 

 2 ; Pyramid Peak, base of east slope, 8,500 feet, Smiley 107 ; Rubicon 

 Peak, chaparral along trail, 8,100 feet, Smiley 411; Ebbett's Pass, a 

 common chaparral oak, Brewer 2037 ; cliffs of granite on Glacier Point 

 trail, Yosemite, Hooker and Gray in 1877 ; Panorama Cliffs, Yosemite, 

 6,500 feet, Hall 9679; Cloud's Rest, 8,600 feet, Smiley 512; Sentinel 

 Dome, Yosemite, Dudley, June 11, 1894; Funston's Trail, Tulare 

 County, Dudley 2090 ; Lake Tenaya, Yosemite, 7,900 feet, Smiley 694. 



19. LOEANTHACEAE (MISTLETOE FAMILY) 



Fruit a globose sessile berry 1. Phoradendron 



Fruit a compressed berry on recurved pedicels 2. Arceuthobium 



1. PHORADENDRON 



1. Phoradendron juniperinum Engelm., Mem. Am. Acad. II, vol. 

 4, p. 58. 1849. 



Type locality. "Parasitic on the kinds of shrub cedar (Juniperus) 

 which grow on the hills and elevated plains about Santa Fe, and on 

 no other tree. ' ' 



Range. California and Oregon east to Colorado and Texas, south 

 into Mexico. 



Zone. Canadian in the Sierra since its host there is Juniperus 

 occidentalis. 



Specimen examined. Vicinity of Mt. Whitney, on Juniper and 

 abundant, Dudley 2467. 



Our Sierran form of this leafless Phoradendron is considered by 

 Professor Trelease to constitute a distinct species from the mistletoe 

 found on. the Western Juniper from Colorado to northern "Mexico. 

 To this Pacific Coast plant the name Phoradendron ligatum Trelease 

 (I.e., p. 24), is assigned with the comment: "The western represent- 

 ative of the Rocky Mountain P. juniperinum, from which it is scarcely 

 separable except by its curiously constricted scales. 



2. ARCEUTHOBIUM 



Growing only on Pinus Murray ana: male flowers in pseudo-panicles formed by 



branches simulating peduncles 1. A. americanum 



Growing on other conifers; male flowers in axils of scales in spikes. 



Staminate flowers in short spikes of usually 5 flowers; stems short (1-5 inches 



high), greenish-yellow in color 2. A. Douglasii var. abietinum 



Staminate flowers in longer spikes (9-17 flowered) ; stems 4-16 inches high, 

 greenish-brown in color 3. A. campylopodum 



