Arctostaphylos franciscana

Eastwood

Bull. Torrey Bot. Club 32: 201. 1905,

Synonyms: Arctostaphylos hookeri subsp. franciscana (Eastwood) Munz
Treatment appears in FNA Volume 8. Treatment on page 425. Mentioned on page 410, 411.
Shrubs, prostrate or mat-forming, 0.2–1.5 m; burl absent; twigs gray-hairy. Leaves: petiole 3–5 mm, (eglandular); blade bright green, shiny, oblanceolate, 1.5–2 × 0.5–1 cm, base cuneate, margins entire, plane, surfaces smooth, ± puberulent, glabrescent. Inflorescences panicles, 1–3-branched; immature inflorescence pendent, (branches compact), axis 0.5–1 cm, 1+ mm diam., gray-hairy; bracts appressed, scalelike (basalmost leaflike), awl-shaped, (concave when fresh), 3–4 mm, apex acute, surfaces glabrous. Pedicels 2–6 mm, glabrous. Flowers: corolla white to pink, urceolate; ovary canescent. Fruits globose, 6–8 mm diam., glabrous. Stones distinct. 2n = 26.

Phenology: Flowering winter–early spring.
Habitat: Maritime chaparral, serpentine soils
Elevation: 0-100 m

Discussion

Of conservation concern.

Formerly found in the northwestern portions of San Francisco, Arctostaphylos franciscana is now extirpated from the wild and survives only in cultivation.

Arctostaphylos franciscana is in the Center for Plant Conservation’s National Collection of Endangered Plants as A. hookeri subsp. franciscana.

References

None.

Lower Taxa

No lower taxa listed.

AuthorV. Thomas Parker +, Michael C. Vasey + and Jon E. Keeley +
AuthorityEastwood +
DistributionCalif. +
Elevation0-100 m +
HabitatMaritime chaparral, serpentine soils +
IllustratorYevonn Wilson-Ramsey +
PhenologyFlowering winter–early spring. +
Publication titleBull. Torrey Bot. Club +
Publication year1889 +
ReferenceNone +
Source xmlhttps://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse grained fna xml/V8/V8 803.xml +
SynonymsArctostaphylos hookeri subsp. franciscana +
Taxon familyEricaceae +
Taxon nameArctostaphylos franciscana +
Taxon parentArctostaphylos +
Taxon rankspecies +
VolumeVolume 8 +