Arctostaphylos stanfordiana

Parry

Bull. Calif. Acad. Sci. 2: 493. 1887 ,.

Common names: Stanford’s manzanita
IllustratedEndemic
Treatment appears in FNA Volume 8. Mentioned on page 411, 412.

Shrubs, erect or prostrate to decumbent, mat or mound-forming, 0.1–3 m; burl absent; twigs usually glabrous, sometimes sparsely short-hairy, hairs sometimes glandular. Leaves: petiole 4–12 mm; blade bright green, shiny or slightly glaucous, elliptic, oblong, or oblanceolate, 3–5 × 1.5–2.5 cm, base cuneate, (not clasping), margins entire, plane, surfaces smooth, glabrous or, rarely, finely glandular-puberulent. Inflorescences panicles, 3–5-branched; immature inflorescence ascendent, branches widespreading, often ascending to erect, axis 2–2.5 cm, to 1 mm diam., usually glabrous, sparsely hairy, or sometimes sparsely glandular-hairy; bracts tightly appressed, scalelike, ovate to deltate, 1–1.5 mm (± equaling buds), apex acuminate, surfaces usually sparsely hairy or sometimes sparsely glandular-hairy; (buds scattered along inflorescence axis, round, appearing as “beads”). Pedicels 5–10 mm, glabrous. Flowers: corolla white to pink, urceolate; ovary glabrous. Fruits subglobose, 6–8 mm diam., glabrous. Stones distinct.

Discussion

Subspecies 3 (3 in the flora).

Selected References

None.

Key

1 Twigs, inflorescence axes, and bracts short glandular-hairy. Arctostaphylos stanfordiana subsp. raichei
1 Twigs, inflorescence axes, and bracts glabrous or sparsely short-hairy > 2
2 Plants erect, 1-3 m; interior n Coast Ranges Arctostaphylos stanfordiana subsp. stanfordiana
2 Plants prostrate to decumbent, 0.1-1 m; Sonoma County. Arctostaphylos stanfordiana subsp. decumbens

"entire" is not a number.

V. Thomas Parker +, Michael C. Vasey +  and Jon E. Keeley +
0mm +  and 1mm +
glandular-hairy +, hairy +  and glabrous +
2 cm20 mm <br />0.02 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
not furrowed +
gray +  and reddish +
persistent +
exfoliating +
cuneate +
bright green +
3 cm30 mm <br />0.03 m <br /> (5 cm50 mm <br />0.05 m <br />) +
oblanceolate;oblong;oblanceolate;oblong;elliptic +
coriaceous +
1.5cm;2.5cm +
not imbricate +  and imbricate +
hue +, light-brown +  and tan +
persistent +
ovate +  and deltate +
ascending;erect +
Stanford’s manzanita +
white +  and pink +
rotate to crateriform campanulate cylindric globose or urceolate +
brown +, reddish-brown +  and red +
depressed-globose +  and globose +
undifferentiated +
fusiform +
stonelike +
indehiscent +
subglobose +
multicellular +
opposite +, whorled +  and alternate +
pubescence +  and color +
persistent +
mound-forming +
10 cm100 mm <br />0.1 m <br /> (300 cm3,000 mm <br />3 m <br />) +
parietal +, axile +  and placentation +
tenuinucellate +  and unitegmic +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
reduced +
not sticky +
0.4 cm4 mm <br />0.004 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
4-5-carpellate +
Bull. Calif. Acad. Sci. +
not +  and connate +
connate +  and distinct +
globose +
persistent +
distinct +
ovate +  and deltate +
Illustrated +  and Endemic +
prostrate +  and erect +
peltate +  and capitate +
distinct +
straight +
glandular-hairy +, hairy +, glandular-puberulent +, , +  and glabrous +
Undefined tribe Arbuteae +
Arctostaphylos stanfordiana +
Arctostaphylos +
species +
short-hairy +  and glabrous +
achlorophyllous +  and chlorophyllous +
evergreen +, deciduous +  and perennial +
heterotrophic +, autotrophic +  and mycotrophic +