Arctostaphylos densiflora

Life-forms

Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Asterids
Ordo: Ericales

Familia: Ericaceae
Subfamilia: Arbutoideae
Genus: Arctostaphylos
Subgenus: A. subg. Arctostaphylos

Sectio: A. sect. Arctostaphylos
Species: Arctostaphylos densiflora
Name

Arctostaphylos densiflora M.S.Baker, (1932).
Synonyms

Arctostaphylos uva-ursi var. densiflora (Baker) J.B.Roof

Distribution
Native distribution areas:

Continental: Northern America
Regional: Southwestern U.S.A.
California.

References: Brummitt, R.K. 2001. TDWG – World Geographical Scheme for Recording Plant Distributions, 2nd Edition
References
Primary references

Baker, M.S. 1932. Leaflets of Western Botany. San Francisco, CA 1: 31.

Links

Hassler, M. 2020. Arctostaphylos densiflora. World Plants: Synonymic Checklists of the Vascular Plants of the World In: Roskovh, Y., Abucay, L., Orrell, T., Nicolson, D., Bailly, N., Kirk, P., Bourgoin, T., DeWalt, R.E., Decock, W., De Wever, A., Nieukerken, E. van, Zarucchi, J. & Penev, L., eds. 2020. Species 2000 & ITIS Catalogue of Life. Published online. Accessed: 2020 Apr 18. Reference page.
Govaerts, R. et al. 2020. Arctostaphylos densiflora in Kew Science Plants of the World online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published online. Accessed: 2020 Apr 18. Reference page.
International Plant Names Index. 2020. Arctostaphylos densiflora. Published online. Accessed: Apr 18 2020.
Tropicos.org 2020. Arctostaphylos densiflora. Missouri Botanical Garden. Published online. Accessed: 18 Apr 2020.
USDA, ARS, Germplasm Resources Information Network. Arctostaphylos densiflora in the Germplasm Resources Information Network (GRIN), U.S. Department of Agriculture Agricultural Research Service. Accessed: 07-Oct-06.

Vernacular names
English: Vine Hill manzanita

Arctostaphylos densiflora, known by the common name Vine Hill manzanita, is a very rare species of manzanita. It is endemic to Sonoma County, California, where it is known from only one extant population of 20 to 30 individual plants. These last wild members of the species are on land near Sebastopol which is owned and protected by the California Native Plant Society. In addition, there are five to ten plants of this manzanita taxon growing on private property about a mile away.[2] The local habitat is mostly chaparral on sandy shale soils.

Description

Arctostaphylos densiflora is a small shrub growing in low, spreading clumps under one meter in height. The shiny green leaves are oval to widely lance-shaped and less than three centimeters long. It bears inflorescences of light to bright pink urn-shaped flowers. The fruit is a drupe about half a centimeter wide.
Species differentiation

A. densiflora likely appeared about 1.5 million years ago, although the Arctostaphylos genus itself arose in the Miocene era.[3]
See also

California chaparral and woodlands

References

"NatureServe Explorer 2.0".
Center for Plant Conservation Archived 2009-08-19 at the Wayback Machine
C. Michael Hogan & Sarah Gordon. 2014. Arctostaphylos densiflora Archived May 21, 2014, at the Wayback Machine. ed. J. Lee. Encyclopedia of Earth. National Council for Science & Environment. Washington DC