SHOOTS: up to 1 m high, mostly short pubescent, gray-green, the internodes 2-3 cm long.

LEAVES: obovate-elliptic to circular, 1.5-3 cm long, 1.5-2.5 cm wide, densely pubescent.

INFLORESCENCE: staminate spikes with 2-3 fertile segments, with 25-40 flowers in 3 rows per segment; pistillate spikes with 2-3 fertile segments, with 6-10 flowers per segment.

FLOWERS: pubescent.

FRUIT: white, short hairy around the persistent perianth segments, ca. 3 mm in diameter.

HOSTS: Quercus, rarely Condalia, Berberis, Vaquelinia and Sideroxylon.

NOTES: Sub-Mogollon oak woodlands: all AZ cos. except Apache, La Paz, and Yuma; 1200-2700 m (4000-8800 ft); Jul-Sep; NM, w TX; Chih., Coah., Son., Mex.

REFERENCES: Hawksworth, Frank G. 1994. Viscaceae. J. Ariz. - Nev. Acad. Sci. Volume 27(2), 241-245.

Duration: Perennial

Nativity: Native

Lifeform: Subshrub

General: Aerial, parasitic shrub, perennials, stems and shoots gray-green, erect to spreading, shoots to 1 m or more high, surfaces short-pubescent, especially near the apices, internodes 15-59 mm long, stems jointed and brittle when dry.

Leaves: Opposite, obovate to elliptic-round, to 3 cm long and 2 cm wide, gray-green with dull surfaces, glabrous to densely short-hairy, petioled or not.

Flowers: Small and inconspicuous, mostly green and slightly pubescent, inflorescences staminate and pistillate; staminate spikes with 4-7 fertile segments, with 20-40 flowers per segment in 3 rows; pistillate spikes with 3-5 fertile segments, with 6-15 flowers per segment.

Fruits: White to pink-tinged, globose berries with glabrous surfaces, 4-5 mm in diameter. Seeds solitary.

Ecology: Parasitic, generally found on Quercus, rarely on Adenostoma, Arctostaphylos, Rhus, and Umbellularia, from 200-7,000 ft (61-2134 m); flowering July-September.

Distribution: California, north to Oregon, south to Texas and Mexico.

Notes: Many sources consider the current name for this species to be Phoradendron serotinum subsp. tomentosum as of August 2012. USDA Plants has this species occurring only in Texas, Okalhoma, and Louisiana, distribution data here taken from Jepson 2012. Look to the gray-green leaves with dull surfaces of the leaves to help identify this species. The whitish clusters of berries are also distinctive of this genus, along with the large leaves.

Ethnobotany: Specific uses for this species are unknown, but other species in the genus have uses; plant growing on cottonwood used medicinally for unspecified purpose, decoction of leaves taken for menstrual cramps, stomach cramps, powdered berries mixed with water and used to bathe sore or infected eyes, also ground berries mixed with a small amount of ashes, boiled in a pot and eaten, and bed of heated branches used by women for menstrual cramps, leaves used to dye basket weeds permanently black, used in the War Dance liniment, and twigs hung over the doorway of a hogan for protection from lightning.

Synonyms: Phoradendron flavescens var. pubescens, P. serotinum var. pubescens

Editor: LCrumbacher2012

Etymology: Phoradendron comes from the Greek phor, "a thief," and dendron, "tree," hence "tree thief" because it draws nourishment from its host tree, and tomentosum means densely covered with matted wool or short hair, tomentose.