Flora of North America species comparison

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Arctostaphylos catalinae

Arctostaphylos montereyensis

Santa Catalina Island manzanita

Monterey manzanita, toro manzanita
Habit Shrubs or trees, erect, 2–5 m; burl absent; twigs densely glandular-hairy with long, white hairs. Shrubs, erect, 1–3 m; burl absent; twigs finely glandular-hairy.
Leaves

petiole 2–6 mm;

blade green-glaucescent, dull, lanceolate-ovate to elliptic, 2–5 × 1.5–3 cm, base truncate to ± slightly lobed, margins entire or ± serrate, plane, surfaces papillate, scabridulous, glandular-hispid.

petiole 4–6 mm;

blade light green, reddish, or slightly glaucous, dull, orbiculate-ovate to orbiculate, 2–3 × 1.5–3 cm, base rounded, truncate, or slightly lobed, margins entire, plane, surfaces papillate, scabrous, finely glandular-hairy.
Inflorescences

panicles, 4–10-branched;

immature inflorescence pendent, branches ± spreading, axis 2–3 cm, 1+ mm diam., densely glandular-hairy with long, white hairs;

bracts not appressed, (overlapping on distal 1/2, green), leaflike, lanceolate to narrowly ovate, 6–10(–15) mm, apex acute, surfaces sparsely glandular-hairy.

panicles, 4–10-branched;

immature inflorescence pendent, branches crowded, axis 1–2 cm, 1+ mm diam., densely glandular-hairy;

bracts not appressed, (green), leaflike, lanceolate, 3–12 mm, apex acuminate, surfaces glandular-hairy.
Pedicels

2–5 mm, densely white-hairy.

5–6 mm, finely glandular-hairy.
Flowers

corolla white, conic to urceolate;

ovary densely white-hairy, sparsely glandular-hairy.

corolla white, urceolate;

ovary glandular-hairy.
Fruits

globose, 8–15 mm diam., sparsely hairy.

depressed-globose, 8–12 mm diam., finely glandular-hairy, (viscid).
Stones

distinct.

distinct or partially connate.
2n

= 26.

= 26.

Arctostaphylos catalinae

Arctostaphylos montereyensis
Phenology Flowering winter–early spring. Flowering winter–early spring.
Habitat Chaparral, open woodlands Maritime chaparral
Elevation 0-500 m (0-1600 ft) 0-500 m (0-1600 ft)
Distribution
from FNA
CA
[BONAP county map]
from FNA
CA
[BONAP county map]
Discussion

Of conservation concern.

Arctostaphylos catalinae is known from Santa Catalina Island.

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

Of conservation concern.

Arctostaphylos montereyensis is known from sandy soils, ranging from dunes to sandstone outcrops, in the southern Monterey Bay area, Monterey County. Plants found on Fort Ord with auriculate leaf bases and blue-green leaves may represent hybrids with A. pajaroensis.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 8, p. 427. FNA vol. 8, p. 426.
Parent taxa Ericaceae > subfam. Arbutoideae > Arctostaphylos Ericaceae > subfam. Arbutoideae > Arctostaphylos
Sibling taxa
A. andersonii, A. auriculata, A. bakeri, A. canescens, 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. 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
Name authority P. V. Wells: Madroño 19: 193. 1968 , Hoover: Leafl. W. Bot. 10: 87. 1964 ,
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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