Phoradendron villosum subsp. coryae

(Trelease) Wiens

Brittonia 16: 45. 1964.

Basionym: Phoradendron coryae Trelease Phoradendron, 43, plate 44. 1916
Synonyms: P. villosum var. coryae (Trelease) B. L. Turner
Treatment appears in FNA Volume 12. Treatment on page 438. Mentioned on page 439.
Revision as of 19:01, 16 December 2019 by FNA>Volume Importer

Hairs on young stems, leaf blades, and inflorescences of two types, some in dense clusters, relatively longer, others uniformly distributed, relatively shorter. Staminate inflorescences: internodes each (14–)25(–44)-flowered. Pistillate inflorescences: internodes each (6–)8(–12)-flowered.


Phenology: Flowering Jul–Sep.
Habitat: Oak woodlands.
Elevation: 400–2400 m.

Distribution

V12 878-distribution-map.jpg

Ariz., N.Mex., Tex., Mexico (Chihuahua, Coahuila, Sonora).

Discussion

In the flora area, subsp. coryae is found in Arizona south of the Mogollon Rim, through central New Mexico to the Chisos and Davis mountains of western Texas. Its principal hosts are Quercus species.

The molecular study by V. E. T. M. Ashworth (2000b) showed that Phoradendron villosum is paraphyletic because P. scaberrimum Trelease forms a clade with subsp. coryae. All three of these taxa parasitize Quercus and a shared indel supported their phylogenetic relationship.

Selected References

None.

Lower Taxa

None.