Flora of North America species comparison

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Arctostaphylos insularis

island manzanita
Habit Shrubs, erect, (arborescent), 2–5 m; burl absent; (lower stems reddish with glaucous patches); twigs glabrous, sometimes sparsely short-hairy or sparsely glandular-hairy.
Leaves

bifacial in stomatal distribution;

petiole 4–8 mm;

blade bright green, lustrous, oblong-elliptic, 2.5–4.5 × 1–3 cm, base rounded, margins entire, ± cupped, surfaces smooth, glabrous.
Inflorescences

panicles, 5–10-branched;

immature inflorescence pendent, branches spreading, ascending, or erect, axis 2–3 cm, 1+ mm diam., glabrous, sometimes sparsely short-hairy or sparsely glandular-hairy, (buds ± spread apart);

bracts not appressed, scalelike, deltate, 1.5–3 mm, apex acute, surfaces finely glandular-hairy.
Pedicels

6–9 mm, finely glandular-hairy.
Flowers

corolla white, conic to urceolate;

ovary glabrous or sparsely glandular-hairy.
Fruits

depressed-globose, 8–15 mm diam., sparsely hairy or glabrous.
Stones

distinct.
2n

= 26.

Arctostaphylos insularis
Phenology Flowering winter–early spring.
Habitat Island chaparral and woodlands
Elevation 200-400 m (700-1300 ft)
Distribution
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
Discussion

Of conservation concern.

Arctostaphylos insularis is known from Santa Cruz Island.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 8, p. 422.
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. hookeri, A. hooveri, A. imbricata, 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
Synonyms A. insularis var. pubescens
Name authority Greene ex Parry: Bull. Calif. Acad. Sci. 2: 494. 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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