Flora of North America species comparison

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Arctostaphylos pumila

Arctostaphylos tomentosa

sand-mat manzanita

woolly leaf manzanita
Habit Shrubs, prostrate or mound-forming, 0.1–1 m; burl absent; twigs short gray-hairy. Shrubs, erect or mound-forming, 1–3 m; burl present; bark of older stems persistent, gray, shredded; twigs usually short-hairy, sometimes with long hairs and glandular hairs.
Leaves

bifacial in stomatal distribution;

petiole 2–3 mm;

blade dull gray abaxially, dark green, ± shiny adaxially, narrowly obovate to oblanceolate, (convex), 1–2 × 0.5–1.5 cm, base cuneate, margins (tinged with red), entire, ± cupped, abaxial surface smooth, densely gray-tomentose, adaxial surface smooth, sparsely puberulent.

bifacial in stomatal distribution;

petiole 2–5 mm;

blade dark to bright green, dull abaxially, ± shiny adaxially, oblong-ovate to oblong-lanceolate, 2–5 × 1.5–2.5 cm, base truncate to ± lobed, margins entire, sometimes toothed, cupped or ± rolled, (distal portion glabrous, proximal tomentose), surfaces short-hairy or glabrous abaxially, papillate, scabrous, sometimes finely glandular-hairy or ± glabrous adaxially.
Inflorescences

racemes, simple or 1-branched;

immature inflorescence pendent, axis 0.3–0.5 cm, 1+ mm diam., short gray-hairy;

bracts not appressed, scalelike (proximalmost leaflike), lanceolate or oblanceolate, 2–3 mm, apex acute to mucronate, surfaces hairy or glabrous.

panicles, 2–8-branched;

immature inflorescence pendent, axis 1–2.5 cm, 1+ mm diam., usually short-hairy, sometimes with long hairs and glandular hairs;

bracts not appressed, leaflike, lanceolate, 8–15 mm, apex acute, surfaces glabrous, hairy, or finely glandular-hairy.
Pedicels

3–4 mm, hairy.

2–5 mm, sparsely hairy, sometimes glandular, or hairy.
Flowers

corolla white, urceolate;

ovary white-hairy or ± glabrous.

corolla white, conic to urceolate;

ovary white-hairy and sometimes sparsely glandular.
Fruits

globose, 5–6 mm diam., sparsely hairy or glabrous.

depressed-globose, 6–10 mm diam., sparsely hairy or glabrous.
Stones

distinct.

distinct.
2n

= 26.

Arctostaphylos pumila

Arctostaphylos tomentosa
Phenology Flowering winter–early spring.
Habitat Sand dunes, maritime chaparral, open, closed-cone conifer forests
Elevation 0-300 m (0-1000 ft)
Distribution
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
Discussion

Of conservation concern.

Arctostaphylos pumila is known from the southern Monterey Bay region, Monterey County.

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

Subspecies 4 (4 in the flora).

Arctostaphylos tomentosa is found in coastal central California, in areas that receive summer fog. Most subspecies are narrowly distributed.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Key
1. Twigs densely glandular-hairy
subsp. bracteosa
1. Twigs eglandular
→ 2
2. Twigs short-hairy and with long, white hairs.
subsp. daciticola
2. Twigs short-hairy
→ 3
3. Leaf blades tomentose abaxially (at least younger leaves).
subsp. tomentosa
3. Leaf blades glabrous abaxially.
subsp. hebeclada
Source FNA vol. 8, p. 424. FNA vol. 8, p. 439.
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. pajaroensis, A. pallida, A. parryana, A. patula, A. pechoensis, A. pilosula, A. pringlei, 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. uva-ursi, A. virgata, A. viridissima, A. viscida
Subordinate taxa
A. tomentosa subsp. bracteosa, A. tomentosa subsp. daciticola, A. tomentosa subsp. hebeclada, A. tomentosa subsp. tomentosa
Synonyms Arbutus tomentosa
Name authority Nuttall: Trans. Amer. Philos. Soc., n. s. 8: 266. 1842 , (Pursh) Lindley: Edwards’s Bot. Reg. 21: plate 1791. 1835 ,
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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