FNA: Arctostaphylos nissenana vs. Arctostaphylos malloryi

	Arctostaphylos nissenana	Arctostaphylos malloryi
	nissenan manzanita	Balaklala manzanita, Mallory's manzanita
Habit	Shrubs, erect or mound-forming, 0.2–1.5 m; burl absent; bark on older stems persistent, gray, shredded; twigs short soft-hairy.	Shrubs, erect or mound-forming, 1–3 m; burl absent; twigs sparsely short-hairy, viscid glandular-hairy.
Leaves	petiole 1–3 mm; blade gray-glaucous, dull, elliptic to oblong-elliptic, 1–2 × 0.8–1.5 cm, base cuneate to rounded, margins entire, plane, surfaces smooth, sparsely appressed-puberulent, glabrescent.	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.
Inflorescences	racemes, simple or 1-branched; immature inflorescence pendent, (framed by leafy bracts), axis 0.2–0.5 cm, 1+ mm diam., short soft-hairy; bracts not appressed, narrowly leaflike, lanceolate, 3–5 mm, apex acute, surfaces glabrous or sparsely hairy.	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.
Pedicels	5–7 mm, sparsely hairy or glabrous.	6–9 mm, finely glandular-hairy.
Flowers	corolla white, urceolate; ovary white-hairy.	corolla white, conic to urceolate; ovary densely white-hairy.
Fruits	subglobose, 3–4 mm diam., glabrous.	depressed-globose, 7–9 mm diam., hairy or glabrous.
Stones	distinct.	distinct.
2n	= 26.	= 26.

	Arctostaphylos nissenana	Arctostaphylos malloryi
Phenology	Flowering winter–early spring.	Flowering winter–late spring.
Habitat	Shallow shale soils in chaparral and foothill woodlands	Chaparral, open forests
Elevation	500-1200 m (1600-3900 ft)	200-1200 m (700-3900 ft)
Distribution	CA [BONAP county map]	CA [BONAP county map]
Discussion	Of conservation concern. Arctostaphylos nissenana occurs in the western Sierra Nevada in El Dorado, Placer, and Tuolumne counties. (Discussion copyrighted by Flora of North America; reprinted with permission.)	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.)
Source	FNA vol. 8, p. 425.	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. malloryi, A. manzanita, A. mewukka, A. montana, A. montaraensis, A. montereyensis, A. morroensis, A. myrtifolia, A. nevadensis, 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. 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	Merriam: Proc. Biol. Soc. Wash. 31: 102, plates 4, 5. 1918 ,	(W. Knight & Gankin) P. V. Wells: Four Seasons 9(2): 54. 1992 ,
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 malloryi

nissenan manzanita

Balaklala manzanita, Mallory's manzanita

Habit

Shrubs, erect or mound-forming, 0.2–1.5 m; burl absent; bark on older stems persistent, gray, shredded; twigs short soft-hairy.

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

Leaves

petiole 1–3 mm;

blade gray-glaucous, dull, elliptic to oblong-elliptic, 1–2 × 0.8–1.5 cm, base cuneate to rounded, margins entire, plane, surfaces smooth, sparsely appressed-puberulent, glabrescent.

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.

Inflorescences

racemes, simple or 1-branched;

immature inflorescence pendent, (framed by leafy bracts), axis 0.2–0.5 cm, 1+ mm diam., short soft-hairy;

bracts not appressed, narrowly leaflike, lanceolate, 3–5 mm, apex acute, surfaces glabrous or sparsely hairy.

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.

Pedicels

5–7 mm, sparsely hairy or glabrous.

6–9 mm, finely glandular-hairy.

Flowers

corolla white, urceolate;

ovary white-hairy.

corolla white, conic to urceolate;

ovary densely white-hairy.

Fruits

subglobose, 3–4 mm diam., glabrous.

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

Stones

distinct.

= 26.

Arctostaphylos malloryi

Phenology

Flowering winter–early spring.

Flowering winter–late spring.

Habitat

Shallow shale soils in chaparral and foothill woodlands

Chaparral, open forests

Elevation

500-1200 m (1600-3900 ft)

200-1200 m (700-3900 ft)

Distribution

[BONAP county map]

Discussion

Of conservation concern.

Arctostaphylos nissenana occurs in the western Sierra Nevada in El Dorado, Placer, and Tuolumne counties.

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

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.)

Source

FNA vol. 8, p. 425.

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. malloryi, A. manzanita, A. mewukka, A. montana, A. montaraensis, A. montereyensis, A. morroensis, A. myrtifolia, A. nevadensis, 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. 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

Merriam: Proc. Biol. Soc. Wash. 31: 102, plates 4, 5. 1918 ,

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

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 nissenana

Arctostaphylos malloryi

Arctostaphylos nissenana

Arctostaphylos malloryi