Arceuthobium campylopodum subsp. siskiyouense

(Hawksworth

Wiens & Nickrent) Nickrent, Phytoneuron 2012-51: 10. 2012

Common names: Knobcone pine dwarf mistletoe
Endemic
Basionyms: Arceuthobium siskiyouense Hawksworth Wiens & Nickrent, Novon 2: 204. 1992
Treatment appears in FNA Volume 12. Treatment on page 433. Mentioned on page 429, 430.
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 </i>subsp.<i> siskiyouense is Pinus attenuata; rare hosts include P. contorta, P. jeffreyi, and P. ponderosa. Subspecies siskiyouense is endemic to the Klamath and Siskiyou mountains.

References

None.

Lower Taxa

No lower taxa listed.

AuthorDaniel L. Nickrent +
Authority(Hawksworth +
BasionymsArceuthobium siskiyouense +
Common nameKnobcone pine dwarf mistletoe +
DistributionCalif. + and Oreg. +
Elevation400–1200 m. +
HabitatConiferous forests, especially closed-cone pine forests with knobcone pine. +
PhenologyFlowering Aug–Sep + and fruiting Sep–Oct. +
Publication titleWiens & Nickrent) Nickrent, Phytoneuron +
Publication year2012 +
ReferenceNone +
Source xmlhttps://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse grained fna xml/V12/V12 665.xml +
Special statusEndemic +
SynonymsRazoumofskya campylopoda +
Taxon familyViscaceae +
Taxon nameArceuthobium campylopodum subsp. siskiyouense +
Taxon parentArceuthobium campylopodum +
Taxon ranksubspecies +
VolumeVolume 12 +