STS Ee 
RAZOUMOFSKYA LORANTHACEZ 609 
6-18-flowered: anthers transverse, opening by pores: pistillate spikes 2- 
Bear, berries reddish. On Libocedrus decurrens, southern Oregon to 
alifornia. 
2 RAZOUMOFSKYA Hoff. Hort. Mosq. 1808. 
ARCEUTHOBIUM Bieb. 1819. 
Small fleshy plants parasitic on the branches of coniferous trees, 
with 4-angled jointed branches, opposite connate scales in the 
place of leaves and small naked dioecious flowers solitary or sev- 
eral together in the axils of the scales. Staminate flowers witha 
2-5-parted calyx and usually an equal number of stamens, the 
anthers sessile on the segments. Pistillate flowers with the calyx- 
limb 2-parted. Fruit a fleshy more or-less flattened berry borne 
on a short somewhat recurved peduncle. Embryo enclosed in 
copious albumen. 
R. Americana Kuntze Rev. Gen. ii, 587. Arceuthobium Americanum 
Nutt. Greenish-yellow, glabrous: stems slender, dichotomously or verticil- 
lately much branched: staminate plants 2-4. inches long with the flowers 
on terminal peduncle-like joints, paniculate, a line broad or more, with 
ovate-orbicular acutish lobes: pistillate plant much smaller, with the 
flowers a line long or less: berries 2lines long. On Pinus contorta, Brit. 
Columbia to California and Colorado. 
R.., Douglasii Kuntze l.c. <Arceuthobium Douglasii Engelm. Greenish 
ellow: stems slender, 3-12 lines high, much branched but not verticillate- 
y: spikes short, mostly 5-flowered : staminate flowers less than a line wide, 
with round-ovate acutish lobes, axillary, forming simple or compound 
spikes: accessory branchlets of fruiting plant flower-bearing: berries 244 
lines long. On Psetdotsuga Douglasii, Idaho to California and New Mex. 
Var. abietinum Greene Fl. Fr. 341. Fertile plants larger 1-3 inch- 
es high, the sterile smaller with spreading or recurved branchlets: fruit 
smaller. On Abies concolor. Oregon and California. 
R. occidentalis Kuntze 1. c. Arceuthobium occidentale Engelm. 
Greenish brown, glabrous: stems stout, 2-5 inches high paniculately much 
branched: staminate plants brownish-yellow, smaller, its flowers in long 
dense spikes, often 9-17 on a single axis, buds ventricose with the upper 
edge curved outward ; calyx 3-5-, usually 4-parted. 144-2 lines wide: anthers 
sessile below the middle of the lanceolate acuminate lobes: pistillate plant 
commoly of a dark olive-brown color, accessory branchlets mostly leaf-bear- 
ing : fruit 244 lines long. On various conifers, Oregon to California and 
aho. 
Var. abietinum. Arceuthobium abietinum Engelm. More spread- 
ing and less densely branched: the accessory branchlets in the fertile 
plant bearing fertile flowers as often as they do leaf-buds. On Abies gran- 
dis, Columbia river valley. 
R. robusta Kuntzel.c Arceuthobium robustum Engelm. Reddish- 
brown and glabrous: stems 2-4 inches long, much branched: staminate 
flowers in short spikes, flat, appressed to the rachis, 3-parted, with bread 
lobes, bearing the stamens above the middle fertile flowers mostly solitary : 
fruit 2-3 lines long. On Pinusponderosa, Brit. Columbia to Uregon. 
OrpER LXXXVIII FAGACEZ Drude Phan. 40 9 
Trees or shrubs with alternate leaves, deciduous stipules 
and small monoecious flowers, the staminate in aments, the pis- 
