Flora of North America species comparison

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Arctostaphylos bakeri

Arctostaphylos rainbowensis

Baker's manzanita

rainbow manzanita
Habit Shrubs, erect, 1–3 m; burl absent; twigs densely glandular-hairy, puberulent, or finely tomentose with sessile glands. Shrubs, erect, 1–4 m; burl present; twigs minutely 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.

petiole 6–12 mm;

blade light green to weakly glaucous or glaucous, dull, elliptic-ovate, 3.5–5 × 2–3.5 cm, base rounded, margins entire, plane, surfaces smooth, glabrous.
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.

panicles, 4–10-branched;

immature inflorescence pendent, axis 2–3 cm, 1+ mm diam., glabrous;

bracts appressed, scalelike, deltate to awl-like, 2–4 mm, apex acute, surfaces glabrous.
Pedicels

3–5 mm, glabrous.

5–10 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.

globose, 8–12 mm diam., glabrous.
Stones

distinct.

connate into single sphere.
2n

= 26.

Arctostaphylos bakeri

Arctostaphylos rainbowensis
Phenology Flowering winter–early spring.
Habitat Chaparral of granite uplands
Elevation 500-700 m (1600-2300 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 rainbowensis is found in a coastal portion of the Peninsular Range in northern San Diego and adjacent Riverside 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. 422.
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. 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 , J. E. Keeley & Massihi: Madroño 41: 2, fig. 1. 1994 ,
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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