Flora of North America species comparison

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Arctostaphylos glutinosa

Arctostaphylos viscida

Schreiber's manzanita

sticky manzanita, sticky whiteleaf manzanita, white-leaf manzanita
Habit Shrubs, erect, 1–2 m; burl absent; twigs sparsely to densely soft-hairy with some glandular hairs. Shrubs, erect, 1–3 m; burl absent; twigs glabrous, sparsely short-hairy, or densely glandular-hairy.
Leaves

petiole to 4 mm;

blade glaucous, dull, oblong to oblong-ovate, 2–5 × 1–3 cm, base distinctly lobed, auriculate-clasping, margins entire, plane, surfaces smooth, gray-canescent, glabrescent.

petiole 5–12 mm;

blade white-glaucous, dull, ovate to ± orbiculate, 2–5 × 2–4 cm, base rounded, truncate, or ± lobed, margins entire or ciliate, plane, surfaces smooth-papillate, rough, scabrous, glabrous or sparsely puberulent.
Inflorescences

panicles, 2–4-branched;

immature inflorescence pendent, branches spreading, curved, (obscured by bracts), axis 1.5–2.5 cm, 1+ mm diam., sparsely to densely soft-hairy with glandular hairs;

bracts not appressed, leaflike, oblong-lanceolate, 5–15 mm, apex acute, surfaces canescent.

panicles, 4–7-branched;

immature inflorescence pendent or ascending, branches spreading, axis 1–3 cm, 1+ mm diam., densely glandular, (sticky);

bracts appressed, (glaucous), scalelike, deltate, 3–4 mm, apex acute to acuminate, surfaces viscid-glandular (rarely minutely stipitate-glandular) or glandular-hairy, especially along margins.
Pedicels

5–8 mm, finely glandular-hairy.

6–10 mm, finely to densely glandular-hairy.
Flowers

corolla white, urceolate;

ovary densely long white-hairy, hairs often gland-tipped.

corolla white, conic to urceolate;

ovary glabrous or glandular-hairy.
Fruits

depressed-globose, 7–14 mm diam., glandular-hairy, (viscid).

depressed-globose, 6–8 mm diam., glabrous or sparsely to densely glandular-hairy, (sometimes viscid).
Stones

distinct.

distinct.
2n

= 26.

Arctostaphylos glutinosa

Arctostaphylos viscida
Phenology Flowering winter–early spring.
Habitat Chaparral, closed-cone conifer forests
Elevation 500- 700 m (1600- 2300 ft)
Distribution
from FNA
CA
[BONAP county map]
from FNA
CA; OR
[WildflowerSearch map]
[BONAP county map]
Discussion

Of conservation concern.

Arctostaphylos glutinosa is found in chaparral and knobcone pine woodlands on Monterey Shale barrens near the Pacific Coast in a limited area of the central Santa Cruz Mountains on northern Ben Lomond Mountain in Santa Cruz County.

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

Subspecies 3 (3 in the flora).

Arctostaphylos viscida is distributed widely in the Sierra Nevada and northern Coast Ranges of California and the Cascade Mountains in southern Oregon. The subspecies occasionally occur in mixed populations, especially subspp. viscida and mariposa.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Key
1. Twigs densely glandular-hairy; leaf blades sparsely short glandular-hairy.
subsp. mariposa
1. Twigs and leaf blades glabrous (except sometimes near inflorescence)
→ 2
2. Ovaries and fruits smooth, glabrous, not viscid.
subsp. viscida
2. Ovaries and fruits rough, densely glandular, viscid.
subsp. pulchella
Source FNA vol. 8, p. 431. FNA vol. 8, p. 423.
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. 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
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. viridissima
Subordinate taxa
A. viscida subsp. mariposa, A. viscida subsp. pulchella, A. viscida subsp. viscida
Name authority B. Schreiber: Amer. Midl. Naturalist 23: 620, plate 1, fig. 2. 1940 , Parry: Bull. Calif. Acad. Sci. 2: 492. 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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