FNA: Arctostaphylos malloryi vs. Arctostaphylos obispoensis

	Arctostaphylos malloryi	Arctostaphylos obispoensis
	Balaklala manzanita, Mallory's manzanita	Bishop manzanita, serpentine manzanita
Habit	Shrubs, erect or mound-forming, 1–3 m; burl absent; twigs sparsely short-hairy, viscid glandular-hairy.	Shrubs or trees, erect, 1–4 m; burl absent; twigs sparsely short-hairy.
Leaves	petiole 5–10 mm; blade glaucous, dull, orbiculate to ovate, 2–3 × 1.5–2.5 cm, base rounded, truncate, or ± lobed, margins entire, plane, surfaces smooth, gray-canescent or densely white-tomentose, glabrescent.	petiole 5–7 mm; blade gray-glaucous, dull, oblong- to lanceolate-ovate, 2–4.5 × 1–2.5 cm, base rounded to truncate or ± lobed, margins entire, plane, surfaces smooth, appressed gray-canescent, glabrescent.
Inflorescences	panicles, 2–5-branched; immature inflorescence pendent, branches spreading or ascending, axis 1–2 cm, 1+ mm diam., sparsely short-hairy, viscid glandular-hairy; bracts appressed, scalelike, linear-lanceolate, 3–5 mm, apex acute, surfaces canescent.	panicles, 2–4-branched; immature inflorescence pendent or ascending, (branches curved, bell-shaped), axis 1–2.5 cm, 1+ mm diam., sparsely short-hairy; bracts not appressed, leaflike, linear-lanceolate, 7–14 mm, apex acuminate, surfaces appressed-canescent or glabrous.
Pedicels	6–9 mm, finely glandular-hairy.	8–10 mm, glabrous.
Flowers	corolla white, conic to urceolate; ovary densely white-hairy.	corolla white, conic to urceolate; ovary glabrous.
Fruits	depressed-globose, 7–9 mm diam., hairy or glabrous.	depressed-globose, 9–14 mm diam., glabrous.
Stones	distinct.	distinct.
2n	= 26.	= 26.

	Arctostaphylos malloryi	Arctostaphylos obispoensis
Phenology	Flowering winter–late spring.	Flowering winter–early spring.
Habitat	Chaparral, open forests	Chaparral, open, closed-cone conifer forests
Elevation	200-1200 m (700-3900 ft)	200-700 m (700-2300 ft)
Distribution	CA [BONAP county map]	CA [WildflowerSearch map] [BONAP county map]
Discussion	Of conservation concern. Arctostaphylos malloryi occurs in disjunct populations on volcanic soils in Colusa, Shasta, and Sonoma counties in the North Coast Ranges. It possibly originated as a hybrid between A. canescens and A. viscida, and merits further study. (Discussion copyrighted by Flora of North America; reprinted with permission.)	Arctostaphylos obispoensis is found in the southern Santa Lucia Mountains on serpentine soils in Monterey and San Luis Obispo counties. (Discussion copyrighted by Flora of North America; reprinted with permission.)
Source	FNA vol. 8, p. 430.	FNA vol. 8, p. 430.
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. 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. 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. canescens subsp. malloryi
Name authority	(W. Knight & Gankin) P. V. Wells: Four Seasons 9(2): 54. 1992 ,	Eastwood: Leafl. W. Bot. 2: 8. 1937 ,
Web links	Local floras: CA Local Web sites: CalFlora, CalPhotos WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search	Local floras: CA Local Web sites: CalFlora, CalPhotos WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search

Arctostaphylos obispoensis

Balaklala manzanita, Mallory's manzanita

Bishop manzanita, serpentine manzanita

Habit

Shrubs, erect or mound-forming, 1–3 m; burl absent; twigs sparsely short-hairy, viscid glandular-hairy.

Shrubs or trees, erect, 1–4 m; burl absent; twigs sparsely short-hairy.

Leaves

petiole 5–10 mm;

blade glaucous, dull, orbiculate to ovate, 2–3 × 1.5–2.5 cm, base rounded, truncate, or ± lobed, margins entire, plane, surfaces smooth, gray-canescent or densely white-tomentose, glabrescent.

petiole 5–7 mm;

blade gray-glaucous, dull, oblong- to lanceolate-ovate, 2–4.5 × 1–2.5 cm, base rounded to truncate or ± lobed, margins entire, plane, surfaces smooth, appressed gray-canescent, glabrescent.

Inflorescences

panicles, 2–5-branched;

immature inflorescence pendent, branches spreading or ascending, axis 1–2 cm, 1+ mm diam., sparsely short-hairy, viscid glandular-hairy;

bracts appressed, scalelike, linear-lanceolate, 3–5 mm, apex acute, surfaces canescent.

panicles, 2–4-branched;

immature inflorescence pendent or ascending, (branches curved, bell-shaped), axis 1–2.5 cm, 1+ mm diam., sparsely short-hairy;

bracts not appressed, leaflike, linear-lanceolate, 7–14 mm, apex acuminate, surfaces appressed-canescent or glabrous.

Pedicels

6–9 mm, finely glandular-hairy.

8–10 mm, glabrous.

Flowers

corolla white, conic to urceolate;

ovary densely white-hairy.

corolla white, conic to urceolate;

ovary glabrous.

Fruits

depressed-globose, 7–9 mm diam., hairy or glabrous.

depressed-globose, 9–14 mm diam., glabrous.

Stones

distinct.

= 26.

Arctostaphylos obispoensis

Phenology

Flowering winter–late spring.

Flowering winter–early spring.

Habitat

Chaparral, open forests

Chaparral, open, closed-cone conifer forests

Elevation

200-1200 m (700-3900 ft)

200-700 m (700-2300 ft)

Distribution

[BONAP county map]

[WildflowerSearch map]

[BONAP county map]

Discussion

Of conservation concern.

Arctostaphylos malloryi occurs in disjunct populations on volcanic soils in Colusa, Shasta, and Sonoma counties in the North Coast Ranges. It possibly originated as a hybrid between A. canescens and A. viscida, and merits further study.

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

Arctostaphylos obispoensis is found in the southern Santa Lucia Mountains on serpentine soils in Monterey and San Luis Obispo counties.

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

Source

FNA vol. 8, p. 430.

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. insularis, A. klamathensis, A. luciana, 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. 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. canescens subsp. malloryi

Name authority

(W. Knight & Gankin) P. V. Wells: Four Seasons 9(2): 54. 1992 ,

Eastwood: Leafl. W. Bot. 2: 8. 1937 ,

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).

Choose a data source: Flora of North America

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Arctostaphylos malloryi

Arctostaphylos obispoensis

Arctostaphylos malloryi

Arctostaphylos obispoensis