Flora of North America species comparison

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Arctostaphylos hookeri

Hooker's manzanita, Raven's manzanita
Habit Shrubs, prostrate or erect, mat- or mound-forming, 0.1–1.5 m; burl absent; bark on older stems persistent, reddish, smooth; twigs sparsely short-hairy.
Leaves

petiole 1–8 mm;

blade bright green, shiny, narrow-elliptic (rhombic) or lanceolate-elliptic to widely elliptic, 0.8–3 × 0.4–1.5 cm, base rounded to cuneate, margins entire, plane, surfaces smooth, ± puberulent, glabrescent.
Inflorescences

racemes, simple or 1-branched;

immature inflorescence pendent (crook-necked), axis 0.3–1 cm, 1+ mm diam., sparsely short-hairy;

bracts not appressed, (weakly spreading), (congested), (dark green), scalelike, deltate, (globose, cuplike), 2–5 mm, apex acute, surfaces glabrous.
Pedicels

2–6 mm, glabrous.
Flowers

corolla white, urceolate;

ovary glabrous.
Fruits

globose, 3–6 mm diam., glabrous.
Stones

distinct.
2n

= 26.

Arctostaphylos hookeri
Distribution
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.)
Key
1. Plants erect or mound-forming; leaf blades ± elliptic, 2-3 × 1-1.5 cm; petioles 4-8 mm; Monterey Bay area.
subsp. hookeri
1. Plants prostrate, mat-forming; leaf blades narrow-elliptic (diamond-shaped), 0.8-1.2 × 0.4-0.7 cm; petioles 1-3 mm; San Luis Obispo County.
subsp. hearstiorum
Source FNA vol. 8, p. 417.
Parent taxa 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. 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. hookeri subsp. hearstiorum, A. hookeri subsp. hookeri
Name authority G. Don: Gen. Hist. 3: 836. 1834 ,
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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