Flora of North America species comparison

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Arctostaphylos gabilanensis

Arctostaphylos nummularia

Gabilan manzanita, Gabilan Mountains manzanita

glossyleaf manzanita, pygmy manzanita, shatterberry
Habit Shrubs or trees, erect, 1–5 m; burl absent; twigs sparsely short-hairy with sessile glands among hairs. Shrubs, prostrate, erect, or mound-forming, 0.1–5 m; burl absent; bark on older stems persistent, gray or red-gray, shredded or rough; twigs densely short-haired with longer gland-tipped hairs.
Leaves

petiole 1–4 mm;

blade gray-glaucous, dull, ovate, 1.5–3.5 × 1.1–2.4 cm, base distinctly lobed, auriculate-clasping, margins entire, plane, surfaces smooth, canescent, glabrescent.

bifacial in stomatal distribution;

petiole to 3 mm;

blade bifacial, light green abaxially, dark green adaxially, shiny, orbiculate to orbiculate-ovate or oblong-elliptic, 1.5–2.2 × 0.3–1.8 cm, base cuneate to obtuse or truncate to ± lobed, margins entire, cupped, surfaces smooth, glabrous, midvein hairy.
Inflorescences

panicles, 1–4-branched;

immature inflorescence pendent, branches spreading, axis 1–3 cm, 1+ mm diam., sparsely short-hairy with sessile glands among hairs;

bracts not appressed, (spreading), scalelike (lowermost leaflike), deltate, 3–5 mm, (fleshy), apex mucronate, surfaces hairy.

panicles, 4–12-branched;

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

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

8–10 mm, hairy or glabrous.

3–5 mm, glabrous.
Flowers

corolla white to pink, conic to urceolate;

ovary glabrous, (not viscid).

4-merous;

corolla white, urceolate;

ovary white-hairy.
Fruits

globose, 10–15 mm diam., glabrous, (not viscid).

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

connate into single sphere.

distinct (breaking apart in mature fruit).
2n

= 26.

Arctostaphylos gabilanensis

Arctostaphylos nummularia
Phenology Flowering winter–early spring.
Habitat Chaparral on decomposing granites
Elevation 300-700 m (1000-2300 ft)
Distribution
from FNA
CA
[BONAP county map]
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
Discussion

Of conservation concern.

Arctostaphylos gabilanensis is known from two disjunct populations in the Gabilan Mountains, San Benito and Monterey counties.

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

Subspecies 2 (2 in the flora).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Key
1. Plants 0.5-5 m; bark on older stems gray, shredded.
subsp. nummularia
1. Plants 0.1-0.5 m; bark on older stems gray or reddish, rough or shredded.
subsp. mendocinoensis
Source FNA vol. 8, p. 431. FNA vol. 8, p. 418.
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. 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
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. 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
Subordinate taxa
A. nummularia subsp. mendocinoensis, A. nummularia subsp. nummularia
Name authority V. T. Parker & M. C. Vasey: Madroño 51: 322, fig. 1. 2004 , A. Gray: Proc. Amer. Acad. Arts 7: 366. 1868 ,
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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