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
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.
Distribution
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Calif., Oreg.
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.
... more about "Arceuthobium campylopodum subsp. siskiyouense"
dehiscing +
dehiscent +
glaucous +
brittle +
scale-like +
fleshy +
Knobcone pine dwarf mistletoe +
singly +
spikelike +
arising +
oriented +
bright green +
staminate +
asymmetric +
unisexual +
lenticular +
dehiscent +
adnate +
absent +
8mm;9mm +
simple +
opposite +
connate +
scale-like +
parallel +
absent +
defined +
articulated +
inferior +
true +
staminate +
recurved +
absent +
epigynous +
opposite +
valvate +
yellowish green +
4;3 +
not persisting +
absent +
2[-3]-carpellate +
complex +
absent +
Wiens & Nickrent Nickrent, Phytoneuron +
2012 +
mucilaginous +
later +
sticky +
absent +
dominant +
Endemic +
branching +
whorled +
brown +
brittle +
secondary +
multiple +
fanlike +
undifferentiated +
2-lobed +
absent +
absent +
Arceuthobium campylopodum subsp. siskiyouense +
Arceuthobium campylopodum +
subspecies +
spikelike +
mucilaginous +
sticky +
branching +
fanlike +
parasitic +
dioecious +