Flora of North America species comparison

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Arctostaphylos sensitiva

Arctostaphylos regismontana

coinleaf manzanita, dwarf manzanita, glossyleaf manzanita

Kings Mountain manzanita
Habit Shrubs, erect or mound-forming, 1–2 m; burl absent; bark on older stems red, smooth; twigs densely short-haired with longer gland-tipped hairs. Shrubs or trees, erect, 2–5 m; burl absent; twigs densely glandular-hairy.
Leaves

bifacial in stomatal distribution;

petiole 1–3 mm;

blade light green abaxially, dark green adaxially, shiny, orbiculate to orbiculate-ovate, 1–2.2 × 0.8–1.8 cm, base truncate to ± lobed, margins entire, cupped, surfaces smooth, glabrous, midvein hairy.

petiole to 3 mm;

blade pale gray-green, dull, oblong-ovate, (boat-shaped, tip curved up), 3–6 × 2–3 cm, base auriculate-clasping, margins entire, plane, surfaces smooth or ± finely scabrous, glandular-hairy, glabrescent, (viscid).
Inflorescences

panicles, 4–8-branched;

immature inflorescence pendent, branches spreading, axis 0.5–1 cm, to 1 mm diam., densely short-hairy with longer gland-tipped hairs;

bracts appressed, scalelike, deltate, 0.5–2 mm, apex acute, surfaces glabrous.

panicles, 4–6-branched;

immature inflorescence pendent, (branches congested), axis 1.5–2 cm, 1+ mm diam., densely long glandular-hairy;

bracts not appressed, leaflike, narrowly oblong-lanceolate, 5–12 mm, apex acute, surfaces glandular-hairy.
Pedicels

3–5 mm, glabrous.

6–10 mm, finely glandular-hairy.
Flowers

4-merous;

corolla white to pink, urceolate;

ovary white-hairy.

corolla white, conic to urceolate;

ovary finely glandular-hairy.
Fruits

subcylindric, 3–4 mm diam., glabrous.

depressed-globose, 6–8 mm diam., finely glandular-hairy.
Stones

distinct (breaking apart in mature fruit).

distinct.
2n

= 26.

= 26.

Arctostaphylos sensitiva

Arctostaphylos regismontana
Phenology Flowering winter–early spring. Flowering winter–early spring.
Habitat Sandstone uplands in maritime chaparral or closed-cone conifer forests near coast Chaparral, margins of open forests
Elevation 100-600 m (300-2000 ft) 100-600 m (300-2000 ft)
Distribution
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
Discussion

Of conservation concern.

Arctostaphylos sensitiva occurs in Marin, San Mateo, and Santa Cruz counties.

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

Of conservation concern.

Arctostaphylos regismontana is found in the vicinity of Kings Mountain in San Mateo County.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 8, p. 418. FNA vol. 8, p. 433.
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. pumila, A. pungens, A. purissima, A. rainbowensis, A. refugioensis, A. regismontana, A. rudis, 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. rudis, A. sensitiva, A. silvicola, A. stanfordiana, A. tomentosa, A. uva-ursi, A. virgata, A. viridissima, A. viscida
Synonyms A. nummularia subsp. sensitiva, A. nummularia var. sensitiva
Name authority Jepson: Madroño 1: 85. 1922 , Eastwood: Leafl. W. Bot. 1: 77. 1933 ,
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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