Arctostaphylos nissenana

Merriam

Proc. Biol. Soc. Wash. 31: 102, plates 4, 5. 1918 ,.

Common names: Nissenan manzanita
EndemicConservation concern
Treatment appears in FNA Volume 8. Treatment on page 425. Mentioned on page 406, 413.

Shrubs, erect or mound-forming, 0.2–1.5 m; burl absent; bark on older stems persistent, gray, shredded; twigs short-soft-hairy. Leaves: petiole 1–3 mm; blade gray-glaucous, dull, elliptic to oblongelliptic, 1–2 × 0.8–1.5 cm, base cuneate to rounded, margins entire, plane, surfaces smooth, sparsely appressed-puberulent, glabrescent. Inflorescences racemes, simple or 1-branched; immature inflorescence pendent, (framed by leafy bracts), axis 0.2–0.5 cm, 1+ mm diam., short-soft-hairy; bracts not appressed, narrowly leaflike, lanceolate, 3–5 mm, apex acute, surfaces glabrous or sparsely hairy. Pedicels 5–7 mm, sparsely hairy or glabrous. Flowers: corolla white, urceolate; ovary white-hairy. Fruits subglobose, 3–4 mm diam., glabrous. Stones distinct. 2n = 26.


Phenology: Flowering winter–early spring.
Habitat: Shallow shale soils in chaparral and foothill woodlands
Elevation: 500-1200 m

Discussion

Of conservation concern.

Arctostaphylos nissenana occurs in the western Sierra Nevada in El Dorado, Placer, and Tuolumne counties.

Selected References

None.

Lower Taxa

None.

"entire" is not a number.

... more about "Arctostaphylos nissenana"
V. Thomas Parker +, Michael C. Vasey +  and Jon E. Keeley +
Merriam +
short-soft-hairy +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
not furrowed +
persistent +
exfoliating +
cuneate;rounded +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
gray-glaucous +
elliptic;oblongelliptic +
coriaceous +
0.8cm;1.5cm +
not imbricate +  and imbricate +
hue +, light-brown +  and tan +
persistent +
lanceolate +
Nissenan manzanita +
rotate to crateriform campanulate cylindric globose or urceolate +
brown +, reddish-brown +  and red +
depressed-globose +  and globose +
500-1200 m +
undifferentiated +
fusiform +
stonelike +
indehiscent +
subglobose +
Shallow shale soils in chaparral and foothill woodlands +
multicellular +
1-branched +  and simple +
opposite +, whorled +  and alternate +
pubescence +  and color +
persistent +
parietal +, axile +  and placentation +
white-hairy +
tenuinucellate +  and unitegmic +
glabrous +  and hairy +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
reduced +
not sticky +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Flowering winter–early spring. +
4-5-carpellate +
Proc. Biol. Soc. Wash. +
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 +
hairy +, glabrous +, glabrescent +  and appressed-puberulent +
Undefined tribe Arbuteae +
Arctostaphylos nissenana +
Arctostaphylos +
species +
short-soft-hairy +
achlorophyllous +  and chlorophyllous +
evergreen +, deciduous +  and perennial +
shrub +  and mound-forming +
heterotrophic +, autotrophic +  and mycotrophic +