Flora of North America species comparison

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Arctostaphylos pallida

Arctostaphylos franciscana

Alameda manzanita, pallid manzanita

Franciscan manzanita
Habit Shrubs, erect, 2–4 m; burl absent; twigs hairy. Shrubs, prostrate or mat-forming, 0.2–1.5 m; burl absent; twigs gray-hairy.
Leaves

petiole to 2 mm, (hairy);

blade glaucous-green, dull, ovate or oblong-ovate, 2.5–4.5 × 2–3 cm, base auriculate-clasping, margins entire, plane, surfaces smooth, glabrous.

petiole 3–5 mm, (eglandular);

blade bright green, shiny, oblanceolate, 1.5–2 × 0.5–1 cm, base cuneate, margins entire, plane, surfaces smooth, ± puberulent, glabrescent.
Inflorescences

panicles, 3–5-branched;

immature inflorescence pendent, (branches compact, framed by bracts), axis 0.5–1 cm, 1+ mm diam., short-hairy to hispid-hairy, usually eglandular;

bracts not appressed, leaflike, widely lanceolate, 5–9 mm, apex acute, surfaces finely glandular-hairy.

panicles, 1–3-branched;

immature inflorescence pendent, (branches compact), axis 0.5–1 cm, 1+ mm diam., gray-hairy;

bracts appressed, scalelike (basalmost leaflike), awl-shaped, (concave when fresh), 3–4 mm, apex acute, surfaces glabrous.
Pedicels

8–12 mm, finely glandular-hairy.

2–6 mm, glabrous.
Flowers

corolla white, conic to urceolate;

ovary finely glandular-hairy.

corolla white to pink, urceolate;

ovary canescent.
Fruits

depressed-globose, 8–10 mm diam., glandular-hairy, (viscid).

globose, 6–8 mm diam., glabrous.
Stones

distinct.

distinct.
2n

= 26.

= 26.

Arctostaphylos pallida

Arctostaphylos franciscana
Phenology Flowering winter–early spring. Flowering winter–early spring.
Habitat Maritime chaparral, gaps in open forests Maritime chaparral, serpentine soils
Elevation 200-400 m (700-1300 ft) 0-100 m (0-300 ft)
Distribution
from FNA
CA
[BONAP county map]
from FNA
CA
[BONAP county map]
Discussion

Of conservation concern.

Arctostaphylos pallida is found on shale barrens in the East Bay Hills, western Contra Costa County, overlooking San Francisco Bay.

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

Of conservation concern.

Formerly found in the northwestern portions of San Francisco, Arctostaphylos franciscana is now extirpated from the wild and survives only in cultivation.

Arctostaphylos franciscana is in the Center for Plant Conservation’s National Collection of Endangered Plants as A. hookeri subsp. franciscana.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 8, p. 433. 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. 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. nissenana, A. nortensis, A. nummularia, A. obispoensis, A. ohloneana, A. osoensis, A. otayensis, A. pacifica, A. pajaroensis, 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. 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. 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
Synonyms A. andersonii var. pallida A. hookeri subsp. franciscana
Name authority Eastwood: Leafl. W. Bot. 1: 76. 1933 , Eastwood: Bull. Torrey Bot. Club 32: 201. (1905)
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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