156 University of 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. LORANTHACEAE (Mistletoe Family) 



Fruit a globose sessile berry 1. Phoradendron 



Fruit a compressed berry on recurved pedicels 2. Arceuthobiura 



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 

 accidentalis. 



Specimen ezafniincd. — ^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. ARCEUTHOBITJM 



Growing only on Pinus Murrayana: 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 



