Phoradendron juniperinum

A. Gray

Mem. Amer. Acad. Arts, n. s. 4: 58. 1849.

Common names: Juniper or incense cedar mistletoe
Synonyms: Phoradendron juniperinum subsp. libocedri (Engelmann) Wiens P. juniperinum var. libocedri Engelmann P. juniperinum var. ligatum (Trelease) Fosberg P. libocedri (Engelmann) Howell P. ligatum Trelease
Treatment appears in FNA Volume 12. Treatment on page 435. Mentioned on page 434, 436, 437.

Subshrubs, erect, 1–2(–2.5) dm, dioecious. Stems green to olive green, glabrous; internodes terete, 5–20 × 1.5–2.5 mm. Leaves green to olive green, scalelike; blade triangular, 2 mm, apex acute; basal phyllotaxy transverse. Staminate inflorescences 3–5 mm; peduncle with 1 internode, 3 mm; fertile internode usually 1, 6-flowered, seriation unknown, flowers 3 (2 proximal, 1 distal) per bract. Pistillate inflorescences 3–5 mm; peduncle with 1 internode, 2 mm; fertile internode 1, 2-flowered, flowers 1 per bract. Flowers: petals 3–4, 0.5–1 mm. Berries white or pinkish, globose to ellipsoid-globose, 4–5 × 3 mm, glabrous. 2n = 28.

Phenology: Flowering summer–early fall.
Habitat: Forests or woodlands with juniper or incense cedar.
Elevation: 800–2900 m.


V12 1006-distribution-map.jpg

Ariz., Calif., Colo., Idaho, Nev., N.Mex., Oreg., Tex., Utah, Mexico (Baja California, Chihuahua, Coahuila, Sonora).


Phoradendron juniperinum is often classified as having two subspecies, subspp. juniperinum and libocedri. Subspecies juniperinum is found throughout the species' range as globose infections on various species of Juniperus. The larger, pendent parasites of Calocedrus from California have been recognized as subsp. libocedri. J. Kuijt (2003) argued that this habit could be a host response because intermediate morphologies are known; the two taxa are not recognized here.

Selected References


Lower Taxa

... more about "Phoradendron juniperinum"
Daniel L. Nickrent +
A. Gray +
Juniper or incense cedar mistletoe +
Ariz. +, Calif. +, Colo. +, Idaho +, Nev. +, N.Mex. +, Oreg. +, Tex. +, Utah +, Mexico (Baja California +, Chihuahua +, Coahuila +  and Sonora). +
800–2900 m. +
Forests or woodlands with juniper or incense cedar. +
Flowering summer–early fall. +
Mem. Amer. Acad. Arts, n. s. +
Illustrated +
Phoradendron juniperinum subsp. libocedri +, P. juniperinum var. libocedri +, P. juniperinum var. ligatum +, P. libocedri +  and P. ligatum +
Phoradendron juniperinum +
Phoradendron +
species +