Loranthaceae. ilistletoe Family. 
Evergreen parasites on the stems of trees and shrubs, absorbing nourish- 
ment from the host by means of haustoria, true roots wanting. Stems branching, 
commonly forming clumps, swollen at the often conspicuous joints. Leaves in ours 
reuuced to small scales. Flowers 
dioecious, regular, greenish or yellowish-green, often minute. Calyx 2-5 
lobed, the stamens subequal to and inserted upon them. Ovary inferior,1-chambered. 
Fruit a small berry. 
Arceuthobium llarsch-Bieb. 
mm 
wee, Yellowish or greenish brown, thevstems conspicuously jointed, 
appearing leafless, the leaves reduced % « minute encircling scales. Flowers 
crowded into short spikes. Staminate calyx 3-lobed, the anthers sessile 
circular in outline, _«,, Tistillate flowers subglobose, calyx 2-lobed, 
the lobes minute, a&e-the"Stimift-or-tme-ttower, Fruit a small watery creen berry 
Which dehisces explosively with some force by a circular rupture near the base, : 
thus expelling the seed to a distance of several feet, whence the local name , 
"Snappers". (Razofade skya Hoffm. ) 
4 
, e Plants spreading evenly along the infected branch 
q) A /trequently for several inches, 1-2 cm. tall, branching 
' put little; on Psewiotsuga taxifolia I, As Douglasii i 
o Plants more or less tufted, localized on the infected 
4 branch, commonly 5-5 cm. tall, branchine 
¢, Branching freely, either dichotomously or with 3-4 
“branches froma single joint; stems commonly 
) 1-125 mn. thick; staminate flowers nearly all 
?@ | terminal, pistillate opposite and terminal, 
\ neither crowded into spikes; on Pinus contorta 2, Ac americanum 
— 
Branching freely, the secondary branches, however, 
fcomnonly short, frequently fertile, the main branch 
> (readily discernible; stems commonly 1.5-3 mn. 
thick; flowers in spikes 
{ 
<| Staminate flowers appearing as though overlapped; 
& on Pinus ponderosa (a form on Tsuga) 3 As campylopodun 
4 staminate flowers not appearing overlapped; on i 
= Larix occidentalis Ae laricis 
