Arctostaphylos montaraensis

Roof

Four Seasons 2(3): 8, figs. pp. 8, 10, 11. 1967 ,.

Common names: Montara manzanita
EndemicConservation concern
Synonyms: Arctostaphylos imbricata subsp. montaraensis (Roof) P. V. Wells
Treatment appears in FNA Volume 8. Treatment on page 434. Mentioned on page 414.

Shrubs, erect or mound-forming, 0.5–5 m; burl absent; twigs densely fine-hairy with long, gland-tipped hairs. Leaves: petiole to 2 mm; blade light green, dull, ovate, 2.5–4.5 × 1.5–2.5 cm, base auriculate-clasping, margins entire, plane, surfaces ± scabrous, sparsely glandular-puberulent. Inflorescences panicles, 4–6-branched; immature inflorescence pendent, (branches densely clustered, sessile), axis 1–1.5 cm, 1+ mm diam., densely fine-hairy with long, gland-tipped hairs; bracts not appressed, leaflike, lanceolate, 6–9 mm, apex acuminate, surfaces finely glandular-hairy. Pedicels 5–6 mm, finely glandular-hairy. Flowers: corolla white, urceolate; ovary finely glandular-hairy. Fruits depressed-globose, 6–7 mm diam., glandular-hairy, (± viscid). Stones distinct. 2n = 26.


Phenology: Flowering winter–early spring.
Habitat: Maritime chaparral
Elevation: 100-500 m

Discussion

Of conservation concern.

Arctostaphylos montaraensis grows mostly on granitic rocks at Montara Mountain and sandstones at San Bruno Mountain, northern San Mateo County.

Selected References

None.

Lower Taxa

None.

"entire" is not a number.

V. Thomas Parker +, Michael C. Vasey +  and Jon E. Keeley +
fine-hairy +
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
not furrowed +
gray +  and reddish +
persistent +
exfoliating +
auriculate-clasping +
light green +
2.5 cm25 mm <br />0.025 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
coriaceous +
1.5cm;2.5cm +
not imbricate +  and imbricate +
hue +, light-brown +  and tan +
persistent +
lanceolate +
Montara manzanita +
rotate to crateriform campanulate cylindric globose or urceolate +
brown +, reddish-brown +  and red +
depressed-globose +  and globose +
100-500 m +
undifferentiated +
fusiform +
stonelike +
indehiscent +
glandular-hairy +
depressed-globose +
Maritime chaparral +
gland-tipped +
opposite +, whorled +  and alternate +
pubescence +  and color +
persistent +
parietal +, axile +  and placentation +
glandular-hairy +
tenuinucellate +  and unitegmic +
glandular-hairy +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 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 +
Four Seasons +
not +  and connate +
connate +  and distinct +
globose +
persistent +
distinct +
ovate +  and deltate +
Endemic +  and Conservation concern +
prostrate +  and erect +
peltate +  and capitate +
distinct +
straight +
glandular-hairy +  and glandular-puberulent +
Arctostaphylos imbricata subsp. montaraensis +
Arctostaphylos montaraensis +
Arctostaphylos +
species +
fine-hairy +
achlorophyllous +  and chlorophyllous +
evergreen +, deciduous +  and perennial +
shrub +  and mound-forming +
heterotrophic +, autotrophic +  and mycotrophic +