Arctostaphylos auriculata

Eastwood

Bull. Torrey Bot. Club 32: 202. 1905 ,.

Common names: Mount Diablo manzanita
EndemicConservation concern
Treatment appears in FNA Volume 8. Treatment on page 430. Mentioned on page 413, 431.

Shrubs, erect, 1–4.5 m; burl absent; twigs densely white-hairy with long, white hairs. Leaves: petiole to 2 mm; blade whitish gray, dull, oblong-ovate to orbiculate-ovate, 1.5–4.5 × 1.5–3 cm, base distinctly lobed, auriculate-clasping, margins entire, plane, surfaces smooth, gray-canescent, glabrescent. Inflorescences panicles, 3–5-branched; immature inflorescence pendent, (branches crowded, ± obscured by bracts), axis 1–1.5 cm, 1+ mm diam., densely white-hairy with long, white hairs; bracts somewhat appressed, leaflike, ovate to lanceolate-ovate, 5–15 mm, apex acute, surfaces canescent. Pedicels 4–10 mm, tomentose. Flowers: corolla white to pink, conic; ovary densely white-hairy. Fruits depressed-globose, 5–10 mm diam., short white-hairy, glabrescent. Stones distinct. 2n = 26.


Phenology: Flowering winter–early spring.
Habitat: Chaparral, open, closed-cone conifer forests
Elevation: 300-500 m

Discussion

Of conservation concern.

Arctostaphylos auriculata is found on the western slopes of Mount Diablo in Contra Costa County.

Selected References

None.

Lower Taxa

None.

"entire" is not a number.

... more about "Arctostaphylos auriculata"
V. Thomas Parker +, Michael C. Vasey +  and Jon E. Keeley +
Eastwood +
white-hairy +
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
not furrowed +
gray +  and reddish +
persistent +
exfoliating +
auriculate-clasping +
whitish gray +
1.5 cm15 mm <br />0.015 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
oblong-ovate;orbiculate-ovate +
coriaceous +
1.5cm;3cm +
not imbricate +  and imbricate +
hue +, light-brown +  and tan +
persistent +
ovate +  and lanceolate-ovate +
Mount Diablo manzanita +
white +  and pink +
rotate to crateriform campanulate cylindric globose or urceolate +
brown +, reddish-brown +  and red +
depressed-globose +  and globose +
300-500 m +
undifferentiated +
fusiform +
stonelike +
indehiscent +
glabrescent +  and white-hairy +
depressed-globose +
Chaparral, open, closed-cone conifer forests +
multicellular +
opposite +, whorled +  and alternate +
pubescence +  and color +
persistent +
parietal +, axile +  and placentation +
white-hairy +
tenuinucellate +  and unitegmic +
0.4 cm4 mm <br />0.004 m <br /> (1 cm10 mm <br />0.01 m <br />) +
reduced +
not sticky +
0 cm0 mm <br />0 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Flowering winter–early spring. +
4-5-carpellate +
Bull. Torrey Bot. Club +
not +  and connate +
connate +  and distinct +
globose +
persistent +
distinct +
ovate +  and deltate +
Endemic +  and Conservation concern +
prostrate +  and erect +
peltate +  and capitate +
distinct +
straight +
canescent +, glabrescent +  and gray-canescent +
Undefined tribe Arbuteae +
Arctostaphylos auriculata +
Arctostaphylos +
species +
white-hairy +
achlorophyllous +  and chlorophyllous +
evergreen +, deciduous +  and perennial +
heterotrophic +, autotrophic +  and mycotrophic +