Arctostaphylos malloryi

(W. Knight & Gankin) P. V. Wells

Four Seasons 9(2): 54. 1992 ,.

Common names: Mallory’s manzanita
EndemicConservation concern
Basionyms: Arctostaphylos canescens subsp. malloryi W. Knight & Gankin Four Seasons 6(4): 23. 1983
Treatment appears in FNA Volume 8. Treatment on page 430. Mentioned on page 413.

Shrubs, erect or mound-forming, 1–3 m; burl absent; twigs sparsely short-hairy, viscid glandular-hairy. Leaves: petiole 5–10 mm; blade glaucous, dull, orbiculate to ovate, 2–3 × 1.5–2.5 cm, base rounded, truncate, or ± lobed, margins entire, plane, surfaces smooth, gray-canescent or densely white-tomentose, glabrescent. Inflorescences panicles, 2–5-branched; immature inflorescence pendent, branches spreading or ascending, axis 1–2 cm, 1+ mm diam., sparsely short-hairy, viscid glandular-hairy; bracts appressed, scalelike, linear-lanceolate, 3–5 mm, apex acute, surfaces canescent. Pedicels 6–9 mm, finely glandular-hairy. Flowers: corolla white, conic to urceolate; ovary densely white-hairy. Fruits depressed-globose, 7–9 mm diam., hairy or glabrous. Stones distinct. 2n = 26.


Phenology: Flowering winter–late spring.
Habitat: Chaparral, open forests
Elevation: 200-1200 m

Discussion

Of conservation concern.

Arctostaphylos malloryi occurs in disjunct populations on volcanic soils in Colusa, Shasta, and Sonoma counties in the North Coast Ranges. It possibly originated as a hybrid between A. canescens and A. viscida, and merits further study.

Selected References

None.

Lower Taxa

None.

"entire" is not a number.

... more about "Arctostaphylos malloryi"
V. Thomas Parker +, Michael C. Vasey +  and Jon E. Keeley +
(W. Knight & Gankin) P. V. Wells +
glandular-hairy +  and short-hairy +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
not furrowed +
gray +  and reddish +
persistent +
exfoliating +
lobed;truncate;lobed;truncate;rounded +
Arctostaphylos canescens subsp. malloryi +
2 cm20 mm <br />0.02 m <br /> (3 cm30 mm <br />0.03 m <br />) +
orbiculate;ovate +
coriaceous +
1.5cm;2.5cm +
not imbricate +  and imbricate +
hue +, light-brown +  and tan +
persistent +
linear-lanceolate +  and scale-like +
ascending;spreading +
Mallory’s manzanita +
rotate to crateriform campanulate cylindric globose or urceolate +
brown +, reddish-brown +  and red +
depressed-globose +  and globose +
200-1200 m +
undifferentiated +
fusiform +
stonelike +
indehiscent +
glabrous +  and hairy +
depressed-globose +
Chaparral, open forests +
multicellular +
opposite +, whorled +  and alternate +
pubescence +  and color +
persistent +
parietal +, axile +  and placentation +
white-hairy +
tenuinucellate +  and unitegmic +
glandular-hairy +
0.6 cm6 mm <br />0.006 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
reduced +
not sticky +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Flowering winter–late 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 +
canescent +, glabrescent +, white-tomentose +, gray-canescent +  and smooth +
Undefined tribe Arbuteae +
Arctostaphylos malloryi +
Arctostaphylos +
species +
glandular-hairy +  and short-hairy +
achlorophyllous +  and chlorophyllous +
evergreen +, deciduous +  and perennial +
shrub +  and mound-forming +
heterotrophic +, autotrophic +  and mycotrophic +