Arctostaphylos purissima

P. V. Wells

Madroño 19: 195. 1968 ,.

Common names: La Purissima manzanita
EndemicConservation concern
Treatment appears in FNA Volume 8. Treatment on page 434. Mentioned on page 413.

Shrubs, erect, 1–4 m; burl absent; twigs densely short-hairy with longer hairs. Leaves: petiole to 2 mm; blade bright green, shiny, orbiculate-ovate to ± orbiculate, 1–2.5 × 1–2 cm, base auriculate-clasping, margins entire, plane, surfaces smooth, glabrous. Inflorescences racemes, simple or 1–2-branched; immature inflorescence pendent, (branches dense, concealed by bracts), axis 0.5–1 cm, 1+ mm diam., densely short-hairy with longer hairs; bracts not appressed, (overlapping), leaflike, ovate to lanceolate-ovate, 5–8 mm, apex acute, surfaces glabrous. Pedicels 3–5 mm, sparsely hairy or glabrous. Flowers: corolla white, conic to urceolate; ovary glabrous. Fruits depressed-globose, 5–8 mm diam., glabrous. Stones distinct. 2n = 26.


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

Discussion

Of conservation concern.

Arctostaphylos purissima is known from hills and mesas near the coast (Burton Mesa) in Santa Barbara County.

Selected References

None.

Lower Taxa

None.

"entire" is not a number.

... more about "Arctostaphylos purissima"
V. Thomas Parker +, Michael C. Vasey +  and Jon E. Keeley +
P. V. Wells +
short-hairy +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
not furrowed +
gray +  and reddish +
persistent +
exfoliating +
auriculate-clasping +
bright green +
1 cm10 mm <br />0.01 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
orbiculate-ovate;more or less orbiculate +
coriaceous +
1cm;2cm +
not imbricate +  and imbricate +
hue +, light-brown +  and tan +
persistent +
ovate +  and lanceolate-ovate +
La Purissima 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 deep, sandy soils +
multicellular +
1-2-branched +  and simple +
opposite +, whorled +  and alternate +
pubescence +  and color +
persistent +
parietal +, axile +  and placentation +
tenuinucellate +  and unitegmic +
glabrous +  and hairy +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 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 +
not +  and connate +
connate +  and distinct +
globose +
persistent +
distinct +
ovate +  and deltate +
Endemic +  and Conservation concern +
prostrate +  and erect +
peltate +  and capitate +
distinct +
straight +
Undefined tribe Arbuteae +
Arctostaphylos purissima +
Arctostaphylos +
species +
short-hairy +
achlorophyllous +  and chlorophyllous +
evergreen +, deciduous +  and perennial +
heterotrophic +, autotrophic +  and mycotrophic +