Flora of North America species comparison

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Arctostaphylos purissima

Arctostaphylos canescens

La Purisima manzanita, La Purissima manzanita

downy manzanita, hoary manzanita
Habit Shrubs, erect, 1–4 m; burl absent; twigs densely short-hairy with longer hairs. Shrubs, erect, 0.3–3 m; burl absent; twigs densely short soft-hairy to white-tomentose.
Leaves

petiole to 2 mm;

blade bright green, shiny, orbiculate-ovate to ± orbiculate, 1–2.5 × 1–2 cm, base auriculate-clasping, margins entire, plane, surfaces smooth, glabrous.

petiole 3–10 mm;

blade whitish gray, dull, orbiculate-ovate, ovate, or elliptic, 2–5 × 1–3 cm, base rounded to cuneate, margins entire, plane, surfaces smooth, gray-canescent, glabrescent.
Inflorescences

racemes, simple or 1–2-branched;

immature inflorescence pendent, (branches dense, concealed by bracts), axis 0.5–1 cm, 1+ mm diam., densely short-hairy with longer hairs;

bracts not appressed, (overlapping), leaflike, ovate to lanceolate-ovate, 5–8 mm, apex acute, surfaces glabrous.

panicles, 1–3-branched, immature inflorescence pendent, (branches crowded, bell-shaped, ± obscured by bracts), axis 1–2 cm, 1+ mm diam., densely short soft-hairy to white-tomentose;

bracts not appressed, (spreading), leaflike, wide-lanceolate, 6–20 mm, apex acute, surfaces canescent.
Pedicels

3–5 mm, sparsely hairy or glabrous.

5–9 mm, hairy, sometimes glandular.
Flowers

corolla white, conic to urceolate;

ovary glabrous.

corolla white to pink, conic to urceolate;

ovary densely white-hairy, sometimes glandular.
Fruits

depressed-globose, 5–8 mm diam., glabrous.

depressed-globose, 5–10 mm diam., sparsely hairy or glabrous, sometimes sparsely glandular.
Stones

distinct.

distinct.
2n

= 26.

Arctostaphylos purissima

Arctostaphylos canescens
Phenology Flowering winter–early spring.
Habitat Maritime chaparral on deep, sandy soils
Elevation 0-100 m (0-300 ft)
Distribution
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
from FNA
CA; OR
[WildflowerSearch map]
[BONAP county map]
Discussion

Of conservation concern.

Arctostaphylos purissima is known from hills and mesas near the coast (Burton Mesa) in Santa Barbara County.

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

Subspecies 2 (2 in the flora).

Arctostaphylos canescens is widespread in the Coast Ranges of central and northern California and northward into southwestern Oregon.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Key
1. Twigs, inflorescence axes, pedicels, and fruits eglandular.
subsp. canescens
1. Twigs, inflorescence axes, pedicels, and fruits glandular-hairy.
subsp. sonomensis
Source FNA vol. 8, p. 434. FNA vol. 8, p. 429.
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. pallida, A. parryana, A. patula, A. pechoensis, A. pilosula, A. pringlei, A. pumila, A. pungens, 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. 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. 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. canescens subsp. canescens, A. canescens subsp. sonomensis
Name authority P. V. Wells: Madroño 19: 195. 1968 , Eastwood: Proc. Calif. Acad. Sci., ser. 3, 1: 84. 1897 ,
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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