Flora of North America species comparison

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Arctostaphylos mewukka

Arctostaphylos otayensis

Indian manzanita

Otay manzanita
Habit Shrubs, erect, 1–3 m; burl present or absent; twigs glabrous or slightly hairy and sparsely glandular. Shrubs, erect or mound-forming, 1–3 m; burl absent; twigs sparsely short-hairy, glandular-hairy.
Leaves

petiole 6–15 mm;

blade intensely gray- or white-glaucous, dull, orbiculate, orbiculate-ovate, oblong-ovate, or lanceolate-ovate, 3–7 × 2–7 cm, base rounded, margins entire, plane, apex acute or obtuse, surfaces smooth, glabrous.

erect;

petiole 5–8 mm;

blade gray-glaucous, dull, narrowly elliptic or oblong-elliptic to ovate, 2–3 × 1–2 cm, base rounded or truncate, margins entire, plane, surfaces smooth, finely appressed-tomentose, ± glabrescent.
Inflorescences

panicles, 2–7-branched;

immature inflorescence pendent, axis 2–3 cm, 1+ mm diam., glabrous or slightly hairy, sometimes glandular;

bracts tightly appressed, scalelike, deltate to linear-lanceolate, 3–6 mm, apex acute or acuminate, surfaces glabrous.

panicles, 4–7-branched;

immature inflorescence branches ascending to erect, axis 1.5–2.5 cm, 1+ mm diam., sparsely short glandular-hairy;

bracts not appressed, (spreading), leaflike, linear-lanceolate, 6–12 mm, apex acuminate, surfaces finely glandular-hairy.
Pedicels

4–8 mm, glabrous.

3–8 mm, finely glandular-hairy.
Flowers

corolla white, conic to urceolate;

ovary glabrous.

corolla white, conic to urceolate;

ovary densely white-hairy, sparsely glandular.
Fruits

(dark mahogany-brown), globose, 12–16 mm diam., glabrous.

globose, 6–8 mm diam., sparsely hairy or glabrous.
Stones

distinct, sometimes connate.

partially distinct or connate.
2n

= 26.

Arctostaphylos mewukka

Arctostaphylos otayensis
Phenology Flowering winter–early spring.
Habitat Chaparral
Elevation 100-1200 m (300-3900 ft)
Distribution
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
Discussion

Subspecies 2 (2 in the flora).

Arctostaphylos mewukka is found on the western slopes of the central and northern Sierra Nevada.

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

Of conservation concern.

Arctostaphylos otayensis is found in the mountains of southern San Diego County (e.g., Guatay, Jamul, Otay), near the border with Baja California. It has been reported from southern Riverside County and northern Baja California as well; those localities need to be confirmed.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Key
1. Burls present; leaf blades 2-4 cm wide, apex acute.
subsp. mewukka
1. Burls absent; leaf blades 4-7 cm wide, apex obtuse.
subsp. truei
Source FNA vol. 8, p. 421. FNA vol. 8, p. 426.
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. 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. 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. mewukka subsp. mewukka, A. mewukka subsp. truei
Name authority Merriam: Proc. Biol. Soc. Wash. 31: 101, plates 2, 3. 1918 , Wieslander & B. Schreiber: Madroño 5: 43, fig. 2d. 1939 ,
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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