
—- 
Loranthaceae 129 
Flowers monoicous or dicicous (ours) or perfect, regular, terminal or axillary, clus- 
tered or solitary. Perianth of similar parts (ours) or calyx and corolla distinguishable ; 
tube adhereni to the ovary; limb entire or toothed or lobed. Stamens 26. Style O—1; 
stigmas terminal, entire, obtuse. Fruit a berry. Seed 1. 
A. Herbs, parasitic on branches of Abies or Pseudotsuga or Tsuga or Larix or Pinus; 
anthers |-celled; berry stalked; inflorescence not bracted. RAZOUMOFSKYA (p, 129) 
AA. Shrubs, parasitic on Quercus or Juniperus or Libocedrus; anthers 2-celled; berry 
sessile; inflorescence bracted. PHORADENDRON (p. 129) 
RAZOUMOFSKYA (Arceuthobium) SMALL MISTLETOE 
Herbs, perennial, parasitic on branches of conifers, fleshy, small or minute, glabrous; 
branches 4-angled. Leaves scale-like, opposite, connate. Flowers not bracted, solitary 
or several together in the axils of the scales; disk present. Perianth of staminate flowers 
2—5-parted: stamens usually as many as the perianth-lobes and on them; anthers sessile. 
Perianth of pistillate flowers with 2-parted limb. Berry ovoid, somewhat flat. (Honor 
of A. Razoumofski, a Russian botanist. ) 
A. On Pinus contorta or Pinus flexilis; staminate plants 5—10 cm. high, 0.5——-2 mm. 
thick at base; pistillate plants much smaller; staminate flowers dichotomously panicu- 
late, nearly all terminal on peduncle-like joints. W. E. 
R. americana Kuntze 
AA. On trees other than those in A; staminate flowers nearly all axillary, forming 
simple or compound spikes. 
B. On Pinus ponderosa; stems 5—13 cm. high, 4—5 mm. thick at base. W. (R. 
robusta for our region.) R, campylopoda Pip. (Snappers) 
BB. On conifers other than Pinus; stems 0.8—4 cm. high. 
C. On Pseudotsuga taxifolia.  E. 
R. douglasii Kuntze 
CC. On Tsuga heterophylla. E. 
R. douglasii tsugensis Pip. 
CCC. On Larix occidentalis. E. 
R. douglasii laricis Pip. 
CCCC. On Abies grandis or Abies concolor. C. E. (RR. occidentalis abietina 
for our region.) R. douglasii abietina Pip. 
PHORADENDRON MISTLETOE 
Shrubs, parasitic on trees, yellowish-green or olive-green; twigs brittle, usually 
jointed. Leaves flat, coriaceous, entire or undulate, faintly veined. Flowers small, in 
bracted spikes, | to several to each bract. Perianth 2—4-lobed, globose or ovoid. 
Anther | at the base of each perianth-lobe, sessile, transversely 2-celled. Ovary inferior; 
stvle short; stigma obtuse or capitate. Berry ovoid or globose. (Gk. phor—a thief, 
dendron—a tree; because it is parasitic on trees.) 
A. On oaks; even the younger branches terete; leaves orbicular to spatulate, 1.2—4.2 
cm. long, not scales, not connate at base, permanently villous; berry white. W. 
P. villosum Nutt. (Oak Mistletoe) 
AA. On conifers; younger branches 4-angled; leaves broadly triangular, scales, often 
connate at base, ciliate; berry white or red. : 
B. On junipers (Juniperus). E. 
P, juniperinum Engelm. (Juniper Mistletoe) 
BB. On Incense Cedar CLibocedrus decurrens). W. (P. libocedri.) 
P. juniperinum libocedri Engelm. (Incense Mistletoe) 
