Rep. U.S. Geogr. Surv., Wheeler, 253. 1879
Phenology: Flowering Aug–Sep; fruiting Sep–Oct.
Habitat: Pinyon-juniper woodlands.
Elevation: 1200–3000 m.
Ariz., Calif., Colo., Nev., N.Mex., Tex., Utah, Mexico (Baja California).
Meiosis occurs in July, with fruits maturing 13 months after pollination.
Arceuthobium divaricatum is parasitic only on pinyon pines. Its principal hosts are Pinus edulis and P. monophylla, but it can also parasitize P. californiarum, P. cembroides, P. discolor, and P. quadrifolia. Most infections are localized; however, over time small witches’ brooms can form that are cryptic given the shrubby habit of the host tree. Pinyon dwarf mistletoe was classified in sect. Campylopoda (F. G. Hawksworth and D. Wiens 1972) as was another parasite of pinyons from Mexico, A. pendens (Hawksworth and Wiens 1980). Isozyme data first showed that these species are not part of sect. Campylopoda (D. L. Nickrent 1996) and this was later confirmed with DNA evidence (Nickrent et al. 2004). Moreover, the two pinyon dwarf mistletoes are not closely related to each other; A. divaricatum is close to A. douglasii, and A. pendens is sister to A. guatemalense Hawksworth & Wiens of Mexico and Guatemala.
|Author||Daniel L. Nickrent +|
|Authority||Engelmann in J. T. Rothrock +|
|Common name||Pinyon dwarf mistletoe +|
|Distribution||Ariz. +, Calif. +, Colo. +, Nev. +, N.Mex. +, Tex. +, Utah + and Mexico (Baja California). +|
|Elevation||1200–3000 m. +|
|Habitat||Pinyon-juniper woodlands. +|
|Phenology||Flowering Aug–Sep + and fruiting Sep–Oct. +|
|Publication title||Rep. U.S. Geogr. Surv., Wheeler, +|
|Publication year||1879 +|
|Source xml||https://firstname.lastname@example.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse grained fna xml/V12/V12 24.xml +|
|Synonyms||Razoumofskya divaricata +|
|Taxon family||Viscaceae +|
|Taxon name||Arceuthobium divaricatum +|
|Taxon parent||Arceuthobium +|
|Taxon rank||species +|
|Volume||Volume 12 +|