Phoradendron villosum subsp. villosum

Synonyms: Phoradendron villosum var. rotundifolium Trelease
Treatment appears in FNA Volume 12. Treatment on page 438.

Hairs on young stems, leaf-blades, and inflorescences of one type, uniformly distributed and of similar lengths. Staminate inflorescences: internodes each (15–) 29 (–45) -flowered. Pistillate inflorescences: internodes each (7–) 12 (–24) -flowered. 2n = 28.


Phenology: Flowering Jul–Sep.
Habitat: Oak woodlands.
Elevation: 20–2200 m.

Distribution

V12 651-distribution-map.jpg

Calif., Oreg., Mexico (Baja California)

Discussion

Subspecies villosum is parasitic mainly on oaks, including Quercus agrifolia, Q. douglasii, and Q. lobata (V. E. Thompson and B. E. Mahall 1983), but can be found on Aesculus, Arctostaphylos, Betula, Populus, Robinia, and Salix. The subspecies is distributed from the Coast Ranges and Willamette Valley of Oregon south through the Sierra Nevada and Coast and Transverse ranges of California into northern Baja California.

Selected References

None.

Lower Taxa

None.

"thin" is not a number."dm" is not declared as a valid unit of measurement for this property.

rounded +  and acute +
Daniel L. Nickrent +
(Nuttall) Nuttall ex Engelmann +
subtruncate;acute +
Viscum villosum +
white +  and pink +
3 cm30 mm <br />0.03 m <br /> (?) +
oblong;globose +
3 cm30 mm <br />0.03 m <br /> (?) +
1.3 cm13 mm <br />0.013 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
obovate-elliptic +  and orbiculate +
spikelike +
Calif. +, Oreg. +  and Mexico (Baja California) +
20–2200 m. +
elliptical +, ovate +  and flattened +
pistillate +  and staminate +
asymmetric +  and symmetric +
1 +  and 4 +
Oak woodlands. +
distributed +
hirtellous +  and glabrate +
pistillate +  and staminate +
terminal +  and axillary +
1 cm10 mm <br />0.01 m <br /> (8 cm80 mm <br />0.08 m <br />) +
(7-)12(-24)-flowered +  and (15-)29(-45)-flowered +
1.5mm;3.8mm +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
olive green;green +
stellate-hairy +  and grayish +
scale-like +
pinnate +  and entire +
articulated +
0.2 cm2 mm <br />0.002 m <br /> (?) +  and 0.4 cm4 mm <br />0.004 m <br /> (?) +
distinct +
triangular +
1 cm10 mm <br />0.01 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Flowering Jul–Sep. +
2[-3]-carpellate +
Boston J. Nat. Hist. +
mucilaginous +
percurrent +  and branching +
olive green;green +
pendulous +  and erect +
hairy +  and grayish +
multiple +  and single +
undifferentiated +
2[-3]-lobed +
Phoradendron villosum var. rotundifolium +
Phoradendron villosum subsp. villosum +
Phoradendron villosum +
subspecies +
spikelike +
mucilaginous +