Flora of North America species comparison

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Arctostaphylos bakeri

Arctostaphylos myrtifolia

Baker's manzanita

Ione manzanita
Habit Shrubs, erect, 1–3 m; burl absent; twigs densely glandular-hairy, puberulent, or finely tomentose with sessile glands. Shrubs, erect or mound-forming, 0.5–1.5 m; burl absent; bark on older stems persistent, dark red with translucent, grayish patches, smooth; twigs finely glandular-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 1–3 mm;

blade bright green, shiny, narrowly elliptic, 0.6–1.5 × 0.3–0.8 cm, base cuneate, margins entire, plane, surfaces rough, papillate, sparsely finely glandular-hairy.
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., finely glandular-hairy;

bracts not appressed, scalelike, deltate, 1–2 mm, apex acuminate, surfaces glabrous.
Pedicels

3–5 mm, glabrous.

1–3 mm, glabrous.
Flowers

corolla white, conic to urceolate;

ovary glabrous.

corolla white, urceolate;

ovary white-hairy.
Fruits

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

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

distinct.

distinct, (breaking apart when mature).
2n

= 26.

Arctostaphylos bakeri

Arctostaphylos myrtifolia
Phenology Flowering winter–early spring.
Habitat Exposed acidic, whitish, clay soils (oxisols)
Elevation 30-200 m (100-700 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 myrtifolia is known only from the lower Sierra Nevada foothills near Ione in the eastern part of the Central Valley.

(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. 415.
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. 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. bakeri subsp. bakeri, A. bakeri subsp. sublaevis
Synonyms A. stanfordiana subsp. bakeri
Name authority Eastwood: Leafl. W. Bot. 1: 115. 1934 , Parry: Pittonia 1: 34. 1887 ,
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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