Arctostaphylos rudis

Jepson & Weislander

Erythea 8: 100. 1938 ,.

Common names: Shagbark manzanita
EndemicConservation concern
Treatment appears in FNA Volume 8. Treatment on page 416. Mentioned on page 406, 409, 411.

Shrubs, erect, 1–3 m; burl present or absent; bark on older stems persistent, gray, shredded; twigs sparsely short-hairy. Leaves erect; petiole 3–8 mm; blade bright green, shiny, elliptic, 1–3 × 1–2 cm, base cuneate to rounded, margins entire, plane, surfaces smooth, puberulent, glabrescent. Inflorescences racemes, (simple or 1-branched); immature inflorescence pendent, axis 0.5–1 cm, 1+ mm diam., sparsely short-hairy; bracts not appressed, scalelike, deltate, 2–6 mm, apex acuminate, surfaces glabrous. Pedicels 3–6 mm, glabrous. Flowers: corolla white, conic to urceolate; ovary glabrous. Fruits depressed-globose, 8–14 mm diam., glabrous. Stones distinct. 2n = 26.


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

Discussion

Of conservation concern.

Arctostaphylos rudis is found along the coast in Nipomo and Burton mesas and Point Sal, Santa Barbara and San Luis Obispo counties.

Selected References

None.

Lower Taxa

None.

"entire" is not a number.

... more about "Arctostaphylos rudis"
V. Thomas Parker +, Michael C. Vasey +  and Jon E. Keeley +
Jepson & Weislander +
short-hairy +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
not furrowed +
persistent +
exfoliating +
cuneate;rounded +
bright green +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
ovate;elliptic +
coriaceous +
1cm;2cm +
not imbricate +  and imbricate +
hue +, light-brown +  and tan +
persistent +
deltate +  and scale-like +
Shagbark manzanita +
rotate to crateriform campanulate cylindric globose or urceolate +
brown +, reddish-brown +  and red +
depressed-globose +  and globose +
0-100 m +
undifferentiated +
fusiform +
stonelike +
indehiscent +
depressed-globose +
Maritime chaparral on sandy soils +
multicellular +
opposite +, whorled +  and alternate +
pubescence +  and color +
persistent +
parietal +, axile +  and placentation +
tenuinucellate +  and unitegmic +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
reduced +
not sticky +
0.3 cm3 mm <br />0.003 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Flowering winter–early spring. +
4-5-carpellate +
not +  and connate +
connate +  and distinct +
globose +
persistent +
distinct +
ovate +  and deltate +
Endemic +  and Conservation concern +
persistent +
prostrate +  and erect +
peltate +  and capitate +
distinct +
straight +
glabrous +, glabrescent +  and puberulent +
Undefined tribe Arbuteae +
Arctostaphylos rudis +
Arctostaphylos +
species +
short-hairy +
achlorophyllous +  and chlorophyllous +
evergreen +, deciduous +  and perennial +
heterotrophic +, autotrophic +  and mycotrophic +