Flora of North America species comparison

The green links below add additional plants to the comparison table. Blue links lead to other Web sites.
enable glossary links

Arctostaphylos pajaroensis

Arctostaphylos columbiana

Pajaro manzanita

bristly manzanita, Columbia manzanita, hairy manzanita, redwood manzanita
Habit Shrubs, erect or mound-forming, 1–4 m; burl absent; bark on older stems persistent, gray, shredded; twigs short-hairy, sometimes with long hairs. Shrubs or trees, erect, 2–5 m; burl absent; twigs densely short-hairy, usually with long, white hairs, often glandular.
Leaves

bifacial in stomatal distribution;

petiole to 2 mm;

blade light green abaxially, dark blue-green, glaucous adaxially, dull, ovate to triangular-ovate, 2–4 × 1–2 cm, base distinctly lobed, auriculate-clasping, margins (tinged with red), entire, ± cupped, surfaces smooth, glabrous, midvein hairy abaxially.

petiole 4–10 mm;

blade dark green, dull, lanceolate-ovate to narrowly oblong-ovate, 4–6 × 2–3 cm, base cuneate to ± rounded, margins entire, plane, surfaces ± papillate, finely scabrous, finely hairy, sparsely glandular-hairy.
Inflorescences

panicles, 2–5-branched;

immature inflorescence pendent, branches spreading, axis 1–1.5 cm, 1+ mm diam., short-hairy, sometimes with long hairs;

bracts not appressed, leaflike, linear-lanceolate, 5–10 mm, apex acuminate, surfaces glabrous.

panicles, 3–8-branched;

immature inflorescence pendent, branches ± spreading, axis 1.5–2.5 cm, 1+ mm diam., densely short-hairy, usually with long, white hairs, sometimes glandular;

bracts not appressed, (green), leaflike, oblong-lanceolate, 10–18 mm, apex acuminate, surfaces finely glandular-hairy.
Pedicels

5–8 mm, finely hairy or glabrous.

2–4 mm, finely glandular-hairy.
Flowers

corolla white to pink, urceolate;

ovary densely white-hairy.

corolla white, conic to urceolate;

ovary densely white-hairy, sometimes sparsely glandular.
Fruits

depressed-globose, 6–8 mm diam., sparsely hairy or glabrous.

depressed-globose, 8–11 mm diam., sparsely hairy.
Stones

distinct.

distinct.
2n

= 26.

= 26.

Arctostaphylos pajaroensis

Arctostaphylos columbiana
Phenology Flowering early winter–early spring. Flowering winter–early spring.
Habitat Maritime chaparral on deep to shallow, sandy soils or sandstone outcroppings Chaparral, gaps and margins of conifer forests along coast, sometimes extending inland, open areas around rock outcrops
Elevation 0-200 m (0-700 ft) 0-1000(-1400) m (0-3300(-4600) ft)
Distribution
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
from FNA
CA; OR; WA; BC
[WildflowerSearch map]
[BONAP county map]
Discussion

Of conservation concern.

Arctostaphylos pajaroensis is found in the vicinity of the Pajaro Hills in Monterey County.

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

Arctostaphylos columbiana is widespread near the coast from northern California to southern British Columbia; it extends inland along the Columbia River Gorge in Oregon and Washington, and inland in Oregon to the western base of the Cascades. Some variation in twig indument occurs in the prominence of longer, stiff hairs, and in the degree of glandulosity. Some plants along the immediate coast of northern California into Oregon lack the longer hairs and have been distinguished as var. tracyi. Hybrids with A. uva-ursi are low shrubs (0.5–1 m) with intermediate vegetative characters. Referred to as A. ×media Piper, these hybrids have been reported from British Columbia, California, Oregon, and Washington.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 8, p. 432. FNA vol. 8, p. 425.
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. 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. 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. viridissima, A. viscida
Synonyms A. andersonii var. pajaroensis A. columbiana var. tracyi, A. tracyi
Name authority (J. E. Adams) J. E. Adams: J. Elisha Mitchell Sci. Soc. 56: 41. 1940 , Piper: in C. V. Piper and R. K. Beattie, Fl. N.W. Coast, 279. 1915 ,
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).



Type/paste one or more Latin names into the boxes above; matching taxa will show up below the box as you type. You can use the up/down arrow keys to move through the list.

(If the plant you're looking for doesn't show up in the auto-complete list, that means it either isn't described in Flora of North America yet, or it's listed under a synonym. And please note that Flora of North America is still missing several plant families, including Fabaceae, Apiaceae, Boraginaceae, and Polemoniaceae.)

Choose a data source: Flora of North America, OregonFlora, UW Burke Herbarium

The species comparison tool is brought to you by:
Northwest Wildflowers