Flora of North America species comparison

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Arctostaphylos gabilanensis

Arctostaphylos franciscana

Gabilan manzanita, Gabilan Mountains manzanita

Franciscan manzanita
Habit Shrubs or trees, erect, 1–5 m; burl absent; twigs sparsely short-hairy with sessile glands among hairs. Shrubs, prostrate or mat-forming, 0.2–1.5 m; burl absent; twigs gray-hairy.
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.

petiole 3–5 mm, (eglandular);

blade bright green, shiny, oblanceolate, 1.5–2 × 0.5–1 cm, base cuneate, margins entire, plane, surfaces smooth, ± puberulent, glabrescent.
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, 1–3-branched;

immature inflorescence pendent, (branches compact), axis 0.5–1 cm, 1+ mm diam., gray-hairy;

bracts appressed, scalelike (basalmost leaflike), awl-shaped, (concave when fresh), 3–4 mm, apex acute, surfaces glabrous.
Pedicels

8–10 mm, hairy or glabrous.

2–6 mm, glabrous.
Flowers

corolla white to pink, conic to urceolate;

ovary glabrous, (not viscid).

corolla white to pink, urceolate;

ovary canescent.
Fruits

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

globose, 6–8 mm diam., glabrous.
Stones

connate into single sphere.

distinct.
2n

= 26.

= 26.

Arctostaphylos gabilanensis

Arctostaphylos franciscana
Phenology Flowering winter–early spring. Flowering winter–early spring.
Habitat Chaparral on decomposing granites Maritime chaparral, serpentine soils
Elevation 300-700 m (1000-2300 ft) 0-100 m (0-300 ft)
Distribution
from FNA
CA
[BONAP county map]
from FNA
CA
[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.)

Of conservation concern.

Formerly found in the northwestern portions of San Francisco, Arctostaphylos franciscana is now extirpated from the wild and survives only in cultivation.

Arctostaphylos franciscana is in the Center for Plant Conservation’s National Collection of Endangered Plants as A. hookeri subsp. franciscana.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 8, p. 431. 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. 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. 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. hookeri subsp. franciscana
Name authority V. T. Parker & M. C. Vasey: Madroño 51: 322, fig. 1. 2004 , Eastwood: Bull. Torrey Bot. Club 32: 201. (1905)
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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