Difference between revisions of "Arceuthobium campylopodum subsp. siskiyouense"
Wiens & Nickrent) Nickrent, Phytoneuron 2012-51: 10. 2012.
Common names: Knobcone pine dwarf mistletoe
Endemic
Basionym: Arceuthobium siskiyouense Hawksworth Wiens & Nickrent, Novon 2: 204. 1992
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Revision as of 20:16, 5 November 2020
Plants forming witches' brooms. Stems brown, 6–8(–10) cm; third internode 8–9(–15) × 2 mm, dominant shoot 2–2.5 mm diam. at base. Staminate flowers 3 mm diam.; petals 3 or 4. Fruits 4 × 2.5 mm.
Phenology: Flowering Aug–Sep; fruiting Sep–Oct.
Habitat: Coniferous forests, especially closed-cone pine forests with knobcone pine.
Elevation: 400–1200 m.
Discussion
Meiosis likely occurs in July, with fruits maturing 13 months after pollination.
The principal host of subsp. siskiyouense is Pinus attenuata; rare hosts include P. contorta, P. jeffreyi, and P. ponderosa. Subspecies siskiyouense is endemic to the Klamath and Siskiyou mountains.
Selected References
None.
Lower Taxa
None.