FNA: Arctostaphylos malloryi vs. Arctostaphylos hooveri

	Arctostaphylos malloryi	Arctostaphylos hooveri
	Balaklala manzanita, Mallory's manzanita	Hoover's manzanita
Habit	Shrubs, erect or mound-forming, 1–3 m; burl absent; twigs sparsely short-hairy, viscid glandular-hairy.	Shrubs or trees, erect, 2–8 m; burl absent; twigs densely fine-hairy, with long, white, gland-tipped hairs.
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 3–6 mm; blade glaucous, dull, oblong to ovate, 4–6 × 2–3 cm, base lobed, auriculate, (not clasping), margins entire, plane, surfaces papillate, scabrous, glandular-hairy, ± 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, 4–6-branched; immature inflorescence pendent, (concealed by bracts), axis 1.5–2.5 cm, 1+ mm diam., densely fine-hairy with long, white, gland-tipped hairs; bracts not appressed, leaflike, lanceolate, 8–20 mm, apex acuminate, surfaces glandular-hairy.
Pedicels	6–9 mm, finely glandular-hairy.	8–15 mm, finely glandular-hairy.
Flowers	corolla white, conic to urceolate; ovary densely white-hairy.	corolla white, conic to urceolate; ovary finely glandular-hairy.
Fruits	depressed-globose, 7–9 mm diam., hairy or glabrous.	depressed-globose, 6–10 mm diam., glandular-hairy, (viscid).
Stones	distinct.	distinct.
2n	= 26.	= 26.

	Arctostaphylos malloryi	Arctostaphylos hooveri
Phenology	Flowering winter–late spring.	Flowering winter–early spring.
Habitat	Chaparral, open forests	Chaparral, open conifer forests
Elevation	200-1200 m (700-3900 ft)	900-1200 m (3000-3900 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.)	Of conservation concern. Arctostaphylos hooveri is known from the northern Santa Lucia Mountains in Monterey County. Populations are associated with openings in yellow pine forests and patches of chaparral. (Discussion copyrighted by Flora of North America; reprinted with permission.)
Source	FNA vol. 8, p. 430.	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. 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. 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
Synonyms	A. canescens subsp. malloryi
Name authority	(W. Knight & Gankin) P. V. Wells: Four Seasons 9(2): 54. 1992 ,	P. V. Wells: Leafl. W. Bot. 9: 152. 1961 ,
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 hooveri

Balaklala manzanita, Mallory's manzanita

Hoover's manzanita

Habit

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

Shrubs or trees, erect, 2–8 m; burl absent; twigs densely fine-hairy, with long, white, gland-tipped hairs.

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 3–6 mm;

blade glaucous, dull, oblong to ovate, 4–6 × 2–3 cm, base lobed, auriculate, (not clasping), margins entire, plane, surfaces papillate, scabrous, glandular-hairy, ± 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, 4–6-branched;

immature inflorescence pendent, (concealed by bracts), axis 1.5–2.5 cm, 1+ mm diam., densely fine-hairy with long, white, gland-tipped hairs;

bracts not appressed, leaflike, lanceolate, 8–20 mm, apex acuminate, surfaces glandular-hairy.

Pedicels

6–9 mm, finely glandular-hairy.

8–15 mm, finely glandular-hairy.

Flowers

corolla white, conic to urceolate;

ovary densely white-hairy.

corolla white, conic to urceolate;

ovary finely glandular-hairy.

Fruits

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

depressed-globose, 6–10 mm diam., glandular-hairy, (viscid).

Stones

distinct.

= 26.

Arctostaphylos hooveri

Phenology

Flowering winter–late spring.

Flowering winter–early spring.

Habitat

Chaparral, open forests

Chaparral, open conifer forests

Elevation

200-1200 m (700-3900 ft)

900-1200 m (3000-3900 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.)

Of conservation concern.

Arctostaphylos hooveri is known from the northern Santa Lucia Mountains in Monterey County. Populations are associated with openings in yellow pine forests and patches of chaparral.

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

Source

FNA vol. 8, p. 430.

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. 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. 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

Synonyms

A. canescens subsp. malloryi

Name authority

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

P. V. Wells: Leafl. W. Bot. 9: 152. 1961 ,

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

The species comparison tool is brought to you by:

Flora of North America species comparison

Arctostaphylos malloryi

Arctostaphylos hooveri

Arctostaphylos malloryi

Arctostaphylos hooveri