Flora of North America species comparison

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Arctostaphylos purissima

Arctostaphylos montereyensis

La Purisima manzanita, La Purissima manzanita

Monterey manzanita, toro manzanita
Habit Shrubs, erect, 1–4 m; burl absent; twigs densely short-hairy with longer hairs. Shrubs, erect, 1–3 m; burl absent; twigs finely glandular-hairy.
Leaves

petiole to 2 mm;

blade bright green, shiny, orbiculate-ovate to ± orbiculate, 1–2.5 × 1–2 cm, base auriculate-clasping, margins entire, plane, surfaces smooth, glabrous.

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

racemes, simple or 1–2-branched;

immature inflorescence pendent, (branches dense, concealed by bracts), axis 0.5–1 cm, 1+ mm diam., densely short-hairy with longer hairs;

bracts not appressed, (overlapping), leaflike, ovate to lanceolate-ovate, 5–8 mm, apex acute, surfaces glabrous.

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

3–5 mm, sparsely hairy or glabrous.

5–6 mm, finely glandular-hairy.
Flowers

corolla white, conic to urceolate;

ovary glabrous.

corolla white, urceolate;

ovary glandular-hairy.
Fruits

depressed-globose, 5–8 mm diam., glabrous.

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

distinct.

distinct or partially connate.
2n

= 26.

= 26.

Arctostaphylos purissima

Arctostaphylos montereyensis
Phenology Flowering winter–early spring. Flowering winter–early spring.
Habitat Maritime chaparral on deep, sandy soils Maritime chaparral
Elevation 0-100 m (0-300 ft) 0-500 m (0-1600 ft)
Distribution
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
from FNA
CA
[BONAP county map]
Discussion

Of conservation concern.

Arctostaphylos purissima is known from hills and mesas near the coast (Burton Mesa) in Santa Barbara County.

(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. 434. 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. 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. 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: 195. 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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