''Arceuthobium microcarpum'', called the "western spruce dwarf mistletoe," is a parasitic plant known only from Arizona and New Mexico. It is found mostly on spruce trees (''

Picea A spruce is a tree of the genus ''Picea'' (), a genus of about 35 species of coniferous evergreen trees in the family Pinaceae, found in the northern temperate and boreal (taiga) regions of the Earth. ''Picea'' is the sole genus in the subfami ...

'' spp.) but also occasionally on

Rocky Mountain bristlecone pine ''Pinus aristata'', the Rocky Mountain bristlecone pine (or the Colorado bristlecone pine), is a long-living species of bristlecone pine tree native to the United States. It appears in the Rocky Mountains in Colorado and northern New Mexico, wit ...

('' Pinus aristata'' Engelm.). The specific epithet "''microcarpum''" means "small fruited," in reference to the berries, which are only 3.5 mm long. ''Arceuthobium microcarpum'' (Engelm.) Hawksw. & Wiens, Brittonia 22(3): 268. 1970. = ''Arceuthobium douglasii'' var. ''microcarpum'' Engelm. in Rothr., Rep. U.S. Geogr. Surv., Wheeler vol. 6, Botany 253. 1879. = ''Arceuthobium campylopodum'' subsp. ''microcarpum'' (Engelm.) Nickrent, Phytoneuron 2012–51: 10. 2012. = ''Razoumofskya microcarpa'' (Engelm.) Wooton & Standl., Contr. U.S. Natl. Herb. 19: 179. 1915.Wooton, E.O., & P.C. Standley. Contributions from the United States National Herbarium 19: 179. 1915.

References

{{Taxonbar, from=Q17049657 microcarpum Parasitic plants Flora of Arizona Flora of New Mexico