Flora of North America species comparison

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Arctostaphylos nissenana

Arctostaphylos myrtifolia

nissenan manzanita

Ione 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, 0.5–1.5 m; burl absent; bark on older stems persistent, dark red with translucent, grayish patches, smooth; twigs finely 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.

erect;

petiole 1–3 mm;

blade bright green, shiny, narrowly elliptic, 0.6–1.5 × 0.3–0.8 cm, base cuneate, margins entire, plane, surfaces rough, papillate, sparsely finely glandular-hairy.
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.

racemes, simple or 1-branched;

immature inflorescence pendent, axis 0.5–1 cm, 1+ mm diam., finely glandular-hairy;

bracts not appressed, scalelike, deltate, 1–2 mm, apex acuminate, surfaces glabrous.
Pedicels

5–7 mm, sparsely hairy or glabrous.

1–3 mm, glabrous.
Flowers

corolla white, urceolate;

ovary white-hairy.

corolla white, urceolate;

ovary white-hairy.
Fruits

subglobose, 3–4 mm diam., glabrous.

subcylindric, 3–4 mm diam., glabrous.
Stones

distinct.

distinct, (breaking apart when mature).
2n

= 26.

= 26.

Arctostaphylos nissenana

Arctostaphylos myrtifolia
Phenology Flowering winter–early spring. Flowering winter–early spring.
Habitat Shallow shale soils in chaparral and foothill woodlands Exposed acidic, whitish, clay soils (oxisols)
Elevation 500-1200 m (1600-3900 ft) 30-200 m (100-700 ft)
Distribution
from FNA
CA
[BONAP county map]
from FNA
CA
[WildflowerSearch map]
[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 myrtifolia is known only from the lower Sierra Nevada foothills near Ione in the eastern part of the Central Valley.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 8, p. 425. FNA vol. 8, p. 415.
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. malloryi, A. manzanita, A. mewukka, A. montana, A. montaraensis, A. montereyensis, A. morroensis, 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 Merriam: Proc. Biol. Soc. Wash. 31: 102, plates 4, 5. 1918 , Parry: Pittonia 1: 34. 1887 ,
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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