Flora of North America species comparison

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Arctostaphylos bakeri

Arctostaphylos rudis

Baker's manzanita

sand mesa manzanita, shagbark manzanita
Habit Shrubs, erect, 1–3 m; burl absent; twigs densely glandular-hairy, puberulent, or finely tomentose with sessile glands. Shrubs, erect, 1–3 m; burl present or absent; bark on older stems persistent, gray, shredded; twigs sparsely short-hairy.
Leaves

petiole 3–8 mm;

blade dark green, not glaucous, dull, oblong-ovate to orbiculate-ovate, 2.5–3 × 1.5–2 cm, base usually cuneate, sometimes truncate to rounded, margins entire, plane, surfaces papillate, glandular-hispidulous.

erect;

petiole 3–8 mm;

blade bright green, shiny, elliptic, 1–3 × 1–2 cm, base cuneate to rounded, margins entire, plane, surfaces smooth, puberulent, glabrescent.
Inflorescences

panicles, 2–5-branched;

immature inflorescence pendent, branches spreading, axis 1–2 cm, 1+ mm diam., finely glandular-hairy, puberulent, or finely tomentose;

bracts not fully appressed, scalelike, deltate to awl-like, 2–4 mm, apex acute, surfaces finely glandular-hairy, puberulent, or finely tomentose.

racemes, (simple or 1-branched);

immature inflorescence pendent, axis 0.5–1 cm, 1+ mm diam., sparsely short-hairy;

bracts not appressed, scalelike, deltate, 2–6 mm, apex acuminate, surfaces glabrous.
Pedicels

3–5 mm, glabrous.

3–6 mm, glabrous.
Flowers

corolla white, conic to urceolate;

ovary glabrous.

corolla white, conic to urceolate;

ovary glabrous.
Fruits

depressed-globose, 8–10 mm diam., glabrous.

depressed-globose, 8–14 mm diam., glabrous.
Stones

distinct.

distinct.
2n

= 26.

Arctostaphylos bakeri

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

Subspecies 2 (2 in the flora).

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

Of conservation concern.

Arctostaphylos rudis is found along the coast in Nipomo and Burton mesas and Point Sal, Santa Barbara and San Luis Obispo counties.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Key
1. Twigs, petioles, rachises, and bracts glandular-hairy; immature inflorescence axes 1-1.5 cm.
subsp. bakeri
1. Twigs, petioles, rachises, and bracts eglandular-hairy, with sessile glands beneath; immature inflorescence axes 1.5-2 cm.
subsp. sublaevis
Source FNA vol. 8, p. 439. FNA vol. 8, p. 416.
Parent taxa Ericaceae > subfam. Arbutoideae > Arctostaphylos Ericaceae > subfam. Arbutoideae > Arctostaphylos
Sibling taxa
A. andersonii, A. auriculata, 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. 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. 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. sensitiva, A. silvicola, A. stanfordiana, A. tomentosa, A. uva-ursi, A. virgata, A. viridissima, A. viscida
Subordinate taxa
A. bakeri subsp. bakeri, A. bakeri subsp. sublaevis
Synonyms A. stanfordiana subsp. bakeri
Name authority Eastwood: Leafl. W. Bot. 1: 115. 1934 , Jepson & Weislander: Erythea 8: 100. 1938 ,
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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