FNA: Arctostaphylos pallida vs. Arctostaphylos viridissima

	Arctostaphylos pallida	Arctostaphylos viridissima
	Alameda manzanita, pallid manzanita	Mcminn's manzanita, white-hair manzanita
Habit	Shrubs, erect, 2–4 m; burl absent; twigs hairy.	Shrubs, erect, 1–4 m; burl absent; twigs short-hairy with longer, white hairs.
Leaves	petiole to 2 mm, (hairy); blade glaucous-green, dull, ovate or oblong-ovate, 2.5–4.5 × 2–3 cm, base auriculate-clasping, margins entire, plane, surfaces smooth, glabrous.	petiole 1–4 mm; blade dark green, shiny, narrowly ovate to oblong-ovate, 2–3.5 × 1.5–2.5 cm, base truncate to ± auriculate-clasping, margins entire, plane, surfaces smooth, puberulent, glabrescent.
Inflorescences	panicles, 3–5-branched; immature inflorescence pendent, (branches compact, framed by bracts), axis 0.5–1 cm, 1+ mm diam., short-hairy to hispid-hairy, usually eglandular; bracts not appressed, leaflike, widely lanceolate, 5–9 mm, apex acute, surfaces finely glandular-hairy.	racemes, simple or 1-branched; immature inflorescence pendent, (branches ± concealed by bracts), axis 1–1.5 cm, 1+ mm diam., short-hairy with long, white hairs; bracts not appressed, (crowded), leaflike, lanceolate, 6–10 mm, apex acute, surfaces lightly hairy.
Pedicels	8–12 mm, finely glandular-hairy.	2–3 mm, sparsely hairy.
Flowers	corolla white, conic to urceolate; ovary finely glandular-hairy.	corolla white, conic to urceolate; ovary densely white-hairy.
Fruits	depressed-globose, 8–10 mm diam., glandular-hairy, (viscid).	subglobose, 10–15 mm diam., sparsely hairy or glabrous.
Stones	distinct.	distinct.
2n	= 26.	= 26.

	Arctostaphylos pallida	Arctostaphylos viridissima
Phenology	Flowering winter–early spring.	Flowering winter–early spring.
Habitat	Maritime chaparral, gaps in open forests	Island chaparral, open forests
Elevation	200-400 m (700-1300 ft)	100-600 m (300-2000 ft)
Distribution	CA [BONAP county map]	CA [WildflowerSearch map] [BONAP county map]
Discussion	Of conservation concern. Arctostaphylos pallida is found on shale barrens in the East Bay Hills, western Contra Costa County, overlooking San Francisco Bay. (Discussion copyrighted by Flora of North America; reprinted with permission.)	Of conservation concern. Arctostaphylos viridissima is known from siliceous shale on the eastern part of Santa Cruz Island. (Discussion copyrighted by Flora of North America; reprinted with permission.)
Source	FNA vol. 8, p. 433.	FNA vol. 8, p. 433.
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. 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. 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. viscida
Synonyms	A. andersonii var. pallida	A. pechoensis var. viridissima
Name authority	Eastwood: Leafl. W. Bot. 1: 76. 1933 ,	(Eastwood) McMinn: Man. Calif. Shrubs, 419. 1939 ,
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 pallida

Arctostaphylos viridissima

Alameda manzanita, pallid manzanita

Mcminn's manzanita, white-hair manzanita

Habit

Shrubs, erect, 2–4 m; burl absent; twigs hairy.

Shrubs, erect, 1–4 m; burl absent; twigs short-hairy with longer, white hairs.

Leaves

petiole to 2 mm, (hairy);

blade glaucous-green, dull, ovate or oblong-ovate, 2.5–4.5 × 2–3 cm, base auriculate-clasping, margins entire, plane, surfaces smooth, glabrous.

petiole 1–4 mm;

blade dark green, shiny, narrowly ovate to oblong-ovate, 2–3.5 × 1.5–2.5 cm, base truncate to ± auriculate-clasping, margins entire, plane, surfaces smooth, puberulent, glabrescent.

Inflorescences

panicles, 3–5-branched;

immature inflorescence pendent, (branches compact, framed by bracts), axis 0.5–1 cm, 1+ mm diam., short-hairy to hispid-hairy, usually eglandular;

bracts not appressed, leaflike, widely lanceolate, 5–9 mm, apex acute, surfaces finely glandular-hairy.

racemes, simple or 1-branched;

immature inflorescence pendent, (branches ± concealed by bracts), axis 1–1.5 cm, 1+ mm diam., short-hairy with long, white hairs;

bracts not appressed, (crowded), leaflike, lanceolate, 6–10 mm, apex acute, surfaces lightly hairy.

Pedicels

8–12 mm, finely glandular-hairy.

2–3 mm, sparsely hairy.

Flowers

corolla white, conic to urceolate;

ovary finely glandular-hairy.

corolla white, conic to urceolate;

ovary densely white-hairy.

Fruits

depressed-globose, 8–10 mm diam., glandular-hairy, (viscid).

subglobose, 10–15 mm diam., sparsely hairy or glabrous.

Stones

distinct.

= 26.

Arctostaphylos pallida

Arctostaphylos viridissima

Phenology

Flowering winter–early spring.

Habitat

Maritime chaparral, gaps in open forests

Island chaparral, open forests

Elevation

200-400 m (700-1300 ft)

100-600 m (300-2000 ft)

Distribution

[BONAP county map]

[WildflowerSearch map]

[BONAP county map]

Discussion

Of conservation concern.

Arctostaphylos pallida is found on shale barrens in the East Bay Hills, western Contra Costa County, overlooking San Francisco Bay.

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

Of conservation concern.

Arctostaphylos viridissima is known from siliceous shale on the eastern part of Santa Cruz Island.

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

Source

FNA vol. 8, p. 433.

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. 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. 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. 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. viscida

Synonyms

A. andersonii var. pallida

A. pechoensis var. viridissima

Name authority

Eastwood: Leafl. W. Bot. 1: 76. 1933 ,

(Eastwood) McMinn: Man. Calif. Shrubs, 419. 1939 ,

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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Flora of North America species comparison

Arctostaphylos pallida

Arctostaphylos viridissima

Arctostaphylos pallida

Arctostaphylos viridissima