Phoradendron juniperinum
Phoradendron villosum
juniper mistletoe, juniper or incense cedar mistletoe, mistletoe
oak mistletoe, Pacific mistletoe
green to olive green, glabrous;
internodes terete, 5–20 × 1.5–2.5 mm.
green or olive green, grayish from pubescence, hairy, hairs stellate, becoming hirtellous to glabrate;
internodes terete, 1.5–3.8 × 1–3 mm.
green to olive green, scalelike;
blade triangular, 2 mm, apex acute;
basal phyllotaxy transverse.
green or olive green, grayish from pubescence, stellate-hairy;
blade obovate-elliptic to orbiculate, 13–45 × 9–22 mm, thin to thick and fleshy, base subtruncate to acute, apex rounded to acute;
basal phyllotaxy transverse.
petals 3–4, 0.5–1 mm.
petals 3–4, 1 mm.
white or pinkish, globose to ellipsoid-globose, 4–5 × 3 mm, glabrous.
white to pink, oblong to globose, 3 × 3 mm, puberulent below petals.
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.
inflorescences 10–80 mm, stellate-hairy;
peduncle with 1 internode, 2–4 mm;
fertile internodes 2–5, each (14–)26(–44)-flowered, triseriate, becoming irregular, flowers 2–7 per column.
inflorescences 3–5 mm;
peduncle with 1 internode, 2 mm;
fertile internode 1, 2-flowered, flowers 1 per bract.
inflorescences 10–80 mm, stellate-hairy;
peduncle with 1 internode, 2–4 mm;
fertile internodes 2–3, each (6–)11(–24)-flowered, triseriate, flowers 1–4 per column.
= 28.
Phoradendron juniperinum
Phoradendron villosum
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.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Subspecies 3 (2 in the flora).
Phoradendron villosum was treated by J. Kuijt (2003) as a synonym of P. serotinum subsp. tomentosum (= P. leucarpum in this treatment), but P. villosum has a different, non-overlapping flowering time, shorter stem internodes, and hairy berries. In addition, P. villosum averages fewer pistillate inflorescence fertile internodes than P. leucarpum. Molecular studies by V. E. T. M. Ashworth (2000, 2000b) showed that P. villosum did not form part of the strongly supported P. leucarpum clade. For these reasons, they are here considered distinct species, as was done by D. Wiens (1964).
Subspecies flavum (I. M. Johnston) Wiens, distinguished by its yellow leaf hairs, is found in Coahuila and Durango, Mexico.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Hairs on young stems, leaf blades, and inflorescences of one type, uniformly distributed and of similar lengths; pistillate inflorescence internodes each (7–)12(–24)-flowered; California, Oregon. | subsp. villosum |
1. Hairs on young stems, leaf blades, and inflorescences of two types, some in dense clusters, relatively longer, others uniformly distributed, relatively shorter; pistillate inflorescence internodes each (6–)8(–12)-flowered; Arizona, New Mexico, Texas. | subsp. coryae |
CA
OR
Flora NW
PNW Herbaria
SW CO Wildflowers
WildflowerSearch
iNaturalist
USDA Plants Database
