Flora of North America species comparison

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Arctostaphylos nevadensis

Arctostaphylos glauca

pine mat manzanita

big berry manzanita
Habit Shrubs, prostrate or mound-forming, 0.1–0.5 m; burl absent or basal, sometimes epicormic; twigs sparsely short-hairy. Shrubs or trees, erect, mound-forming, 1–8 m; burl absent; twigs usually glabrous, sometimes short-hairy or glandular-hairy.
Leaves

petiole 3–7 mm;

blade bright green, shiny, obovate or oblanceolate, 1–3 × 1–1.5 cm, base cuneate, margins entire, plane, surfaces smooth, puberulent, glabrescent.

petiole 7–15 mm;

blade white-glaucous, dull, oblong-ovate to ± orbiculate, 2.5–5 × 2–4 cm, base rounded, truncate, or slightly lobed, margins entire, plane, surfaces smooth, glabrous.
Inflorescences

racemes, simple or 1-branched;

immature inflorescence pendent, (branches congested, globose), axis 0.5–1 cm, 1+ mm diam., sparsely short-hairy;

bracts not appressed, (green), scalelike, linear or linear-lanceolate, mostly 2–3 mm (some near base leaflike, 5–10 mm), apex acuminate, mucronate, surfaces glabrous or sparsely hairy, rarely finely glandular-hairy.

panicles, 4–8-branched;

immature inflorescence pendent, branches spreading, axis 2–3 cm, 1+ mm diam., usually glabrous, sometimes short-hairy or glandular-hairy;

bracts not appressed, (spreading), scalelike, deltate, 3–6 mm, (fleshy), apex mucronate, surfaces glabrous; (buds exposed).
Pedicels

3–5 mm, glabrous.

8–10 mm, finely glandular-hairy.
Flowers

corolla white, urceolate;

ovary glabrous.

corolla white, conic to urceolate;

ovary densely glandular-viscid.
Fruits

(dark brown), globose, 6–8 mm diam., glabrous.

globose, 12–15 mm diam., glabrous, (viscid).
Stones

distinct.

connate into single sphere.
2n

= 26.

Arctostaphylos nevadensis

Arctostaphylos glauca
Phenology Flowering winter–early spring.
Habitat Rocky slopes, chaparral, woodlands
Elevation 300-2200 m (1000-7200 ft)
Distribution
from FNA
CA; NV; OR; WA
[WildflowerSearch map]
[BONAP county map]
from FNA
CA; Mexico (Baja California)
[WildflowerSearch map]
[BONAP county map]
Discussion

Subspecies 2 (2 in the flora).

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Arctostaphylos glauca is widespread, occurring from Mount Diablo in central California through the southern Coast Ranges, east through the Transverse Ranges into the desert, and south in the Peninsular Ranges into northern Baja California, usually in drier interior ranges. It is distinctive throughout its range; however, some populations have nonglandular twig puberulence and others are stipitate-glandular, often mixed in with individuals that are typically glabrous. Arctostaphylos glauca can be a component of chaparral and can also be found in woodlands and at the edges of grasslands.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Key
1. Burls absent; plants killed by fire.
subsp. nevadensis
1. Burls basal or epicormic; plants resprouting after fire.
subsp. knightii
Source FNA vol. 8, p. 435. FNA vol. 8, p. 422.
Parent taxa Ericaceae > subfam. Arbutoideae > Arctostaphylos Ericaceae > subfam. Arbutoideae > Arctostaphylos
Sibling taxa
A. andersonii, A. auriculata, A. bakeri, A. canescens, A. catalinae, A. columbiana, A. confertiflora, A. crustacea, A. cruzensis, A. densiflora, A. edmundsii, A. franciscana, A. gabilanensis, A. glandulosa, A. glauca, A. glutinosa, A. hispidula, A. hookeri, A. hooveri, A. imbricata, A. insularis, A. klamathensis, A. luciana, A. malloryi, A. manzanita, A. mewukka, A. montana, A. montaraensis, A. montereyensis, A. morroensis, A. myrtifolia, A. nissenana, A. nortensis, A. nummularia, A. obispoensis, A. ohloneana, A. osoensis, A. otayensis, A. pacifica, A. pajaroensis, A. pallida, A. parryana, A. patula, A. pechoensis, A. pilosula, A. pringlei, A. pumila, A. pungens, A. purissima, A. rainbowensis, A. refugioensis, A. regismontana, A. rudis, A. sensitiva, A. silvicola, A. stanfordiana, A. tomentosa, A. uva-ursi, A. virgata, A. viridissima, A. viscida
A. andersonii, A. auriculata, A. bakeri, A. canescens, A. catalinae, A. columbiana, A. confertiflora, A. crustacea, A. cruzensis, A. densiflora, A. edmundsii, A. franciscana, A. gabilanensis, A. glandulosa, A. glutinosa, A. hispidula, A. hookeri, A. hooveri, A. imbricata, A. insularis, A. klamathensis, A. luciana, A. malloryi, A. manzanita, A. mewukka, A. montana, A. montaraensis, A. montereyensis, A. morroensis, A. myrtifolia, A. nevadensis, A. nissenana, A. nortensis, A. nummularia, A. obispoensis, A. ohloneana, A. osoensis, A. otayensis, A. pacifica, A. pajaroensis, A. pallida, A. parryana, A. patula, A. pechoensis, A. pilosula, A. pringlei, A. pumila, A. pungens, A. purissima, A. rainbowensis, A. refugioensis, A. regismontana, A. rudis, A. sensitiva, A. silvicola, A. stanfordiana, A. tomentosa, A. uva-ursi, A. virgata, A. viridissima, A. viscida
Subordinate taxa
A. nevadensis subsp. knightii, A. nevadensis subsp. nevadensis
Synonyms A. glauca var. puberula
Name authority A. Gray: in A. Gray et al., Syn. Fl. N. Amer. 2: 27. 1878 , Lindley: Edwards’s Bot. Reg. 21: sub plate 1791. 1835 ,
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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