Arctostaphylos morroensis

Wieslander & B. Schreiber

Madroño 5: 42, fig. 2a. 1939 ,.

Common names: Morro manzanita
EndemicConservation concern
Treatment appears in FNA Volume 8. Treatment on page 432. Mentioned on page 406, 410.

Shrubs, erect or mound-forming, 1–4 m; burl absent; bark on older stems persistent, gray, shredded; twigs short-hairy with long, white hairs. Leaves bifacial in stomatal distribution; petiole 2–5 mm; blade dull gray abaxially, dark green, ± shiny adaxially, oblong-ovate to oblongelliptic, 1.5–3 × 1–2 cm, base subcordate to ± truncate (sometimes with vestigial auricles), margins entire, cupped, abaxial surface smooth, densely tomentose, adaxial surface smooth, glabrous. Inflorescences panicles, 2–5-branched; immature inflorescence pendent, (branches congested, bell-shaped, partly framed by bracts), axis 0.5–0.8 cm, 1+ mm diam., short-hairy with long, white hairs; bracts not appressed, leaflike, linear-lanceolate, 5–8 mm, apex acuminate, surfaces puberulent. Pedicels 4–6 mm, hairy or glabrous. Flowers: corolla white, urceolate; ovary densely white-hairy. Fruits depressed-globose, 7–10 mm diam., sparsely hairy. Stones distinct. 2n = 26.


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

Discussion

Of conservation concern.

Arctostaphylos morroensis is known from the Morro Bay region in San Luis Obispo County.

Selected References

None.

Lower Taxa

None.

"entire" is not a number.

... more about "Arctostaphylos morroensis"
V. Thomas Parker +, Michael C. Vasey +  and Jon E. Keeley +
Wieslander & B. Schreiber +
short-hairy +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
not furrowed +
persistent +
exfoliating +
subcordate to more +
dark green +  and gray +
1.5 cm15 mm <br />0.015 m <br /> (3 cm30 mm <br />0.03 m <br />) +
shiny +  and dull +
oblong-ovate;oblongelliptic +
coriaceous +
1cm;2cm +
not imbricate +  and imbricate +
hue +, light-brown +  and tan +
persistent +
linear-lanceolate +
Morro 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 near coast +
multicellular +
opposite +, whorled +  and alternate +
pubescence +  and color +
persistent +
parietal +, axile +  and placentation +
white-hairy +
tenuinucellate +  and unitegmic +
glabrous +  and hairy +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
reduced +
not sticky +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 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 +
Undefined tribe Arbuteae +
Arctostaphylos morroensis +
Arctostaphylos +
species +
short-hairy +
achlorophyllous +  and chlorophyllous +
evergreen +, deciduous +  and perennial +
shrub +  and mound-forming +
heterotrophic +, autotrophic +  and mycotrophic +