Difference between revisions of "Arceuthobium campylopodum subsp. occidentale"

(Engelmann) Nickrent

Phytoneuron 2012-51: 10. 2012.

Common names: Digger pine dwarf mistletoe
Endemic
Basionym: Arceuthobium occidentale Engelmann in J. T. Rothrock Rep. U.S. Geogr. Surv., Wheeler, 254, 375. 1879
Treatment appears in FNA Volume 12. Treatment on page 433. Mentioned on page 429, 430.
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|name=Arceuthobium occidentale
 
|authority=Engelmann in J. T. Rothrock
 
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name=Arceuthobium campylopodum subsp. occidentale
 
name=Arceuthobium campylopodum subsp. occidentale
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|genus=Arceuthobium
 
|genus=Arceuthobium
 
|species=Arceuthobium campylopodum
 
|species=Arceuthobium campylopodum

Revision as of 20:07, 27 May 2020

Plants usually forming localized infections only. Stems yellow or orange, 8(–17) cm; third internode 7–12.7(–18) × 1.5–1.8(–3.5) mm, dominant shoot 1.5–5 mm diam. at base. Staminate flowers 3 mm diam.; petals 3–4. Fruits 4.5 × 3 mm.


Phenology: Flowering Sep–Nov(–Dec); fruiting (Sep–)Oct–Jan(–Feb).
Habitat: Coniferous and mixed forests, especially with digger pine.
Elevation: 30–1200 m.

Discussion

Meiosis occurs in August, with fruits maturing 13 months after pollination.

Pinus sabiniana is the principal host of subsp. occidentale; secondary hosts include Pinus attenuata, P. coulteri, P. jeffreyi, and P. ponderosa, as well as some exotic species of pines. Subspecies occidentale occurs in the foothills surrounding the Central Valley and in the Coast Ranges.

Selected References

None.

Lower Taxa

None.
Daniel L. Nickrent +
(Engelmann) Nickrent +
Arceuthobium occidentale +
Digger pine dwarf mistletoe +
30–1200 m. +
Coniferous and mixed forests, especially with digger pine. +
Flowering Sep–Nov(–Dec) +  and fruiting (Sep–)Oct–Jan(–Feb). +
Phytoneuron +
Razoumofskya campylopoda +
Arceuthobium campylopodum subsp. occidentale +
Arceuthobium campylopodum +
subspecies +