Flora of North America species comparison

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Arctostaphylos glauca

Arctostaphylos nissenana

big berry manzanita

nissenan manzanita
Habit Shrubs or trees, erect, mound-forming, 1–8 m; burl absent; twigs usually glabrous, sometimes short-hairy or glandular-hairy. 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 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.

petiole 1–3 mm;

blade gray-glaucous, dull, elliptic to oblong-elliptic, 1–2 × 0.8–1.5 cm, base cuneate to rounded, margins entire, plane, surfaces smooth, sparsely appressed-puberulent, glabrescent.
Inflorescences

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).

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

8–10 mm, finely glandular-hairy.

5–7 mm, sparsely hairy or glabrous.
Flowers

corolla white, conic to urceolate;

ovary densely glandular-viscid.

corolla white, urceolate;

ovary white-hairy.
Fruits

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

subglobose, 3–4 mm diam., glabrous.
Stones

connate into single sphere.

distinct.
2n

= 26.

= 26.

Arctostaphylos glauca

Arctostaphylos nissenana
Phenology Flowering winter–early spring. Flowering winter–early spring.
Habitat Rocky slopes, chaparral, woodlands Shallow shale soils in chaparral and foothill woodlands
Elevation 300-2200 m (1000-7200 ft) 500-1200 m (1600-3900 ft)
Distribution
from FNA
CA; Mexico (Baja California)
[WildflowerSearch map]
[BONAP county map]
from FNA
CA
[BONAP county map]
Discussion

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.)

Of conservation concern.

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

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 8, p. 422. FNA vol. 8, p. 425.
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. 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
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. nevadensis, 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
Synonyms A. glauca var. puberula
Name authority Lindley: Edwards’s Bot. Reg. 21: sub plate 1791. 1835 , Merriam: Proc. Biol. Soc. Wash. 31: 102, plates 4, 5. 1918 ,
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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