FNA: Arctostaphylos pechoensis vs. Arctostaphylos morroensis

	Arctostaphylos pechoensis	Arctostaphylos morroensis
	Pecho manzanita	Morro manzanita
Habit	Shrubs, erect, 1–5 m; burl absent; twigs short-hairy with long, white hairs.	Shrubs, erect or mound-forming, 1–4 m; burl absent; bark on older stems persistent, gray, shredded; twigs short-hairy with long, white hairs.
Leaves	petiole 1–4 mm; blade glaucous, dull to ± shiny, oblong-ovate, 2–5 × 1–2.5 cm, base auriculate-clasping, margins entire, plane, surfaces smooth, puberulent, glabrescent.	bifacial in stomatal distribution; petiole 2–5 mm; blade dull gray abaxially, dark green, ± shiny adaxially, oblong-ovate to oblong-elliptic, 1.5–3 × 1–2 cm, base subcordate to ± truncate (sometimes with vestigial auricles), margins entire, cupped, abaxial surface smooth, densely tomentose, adaxial surface smooth, glabrous.
Inflorescences	panicles, 1–4-branched; immature inflorescence pendent, (branches dense, framed by bracts), axis 1–1.5 cm, 1+ mm diam., short-hairy with long, white hairs; bracts not appressed, leaflike, linear-lanceolate, 8–15 mm, apex acuminate, surfaces glabrous.	panicles, 2–5-branched; immature inflorescence pendent, (branches congested, bell-shaped, partly framed by bracts), axis 0.5–0.8 cm, 1+ mm diam., short-hairy with long, white hairs; bracts not appressed, leaflike, linear-lanceolate, 5–8 mm, apex acuminate, surfaces puberulent.
Pedicels	5–10 mm, glabrous.	4–6 mm, hairy or glabrous.
Flowers	corolla white, conic to urceolate; ovary hairy.	corolla white, urceolate; ovary densely white-hairy.
Fruits	depressed-globose, 8–12 mm diam., glabrous.	depressed-globose, 7–10 mm diam., sparsely hairy.
Stones	partially to entirely connate.	distinct.
2n	= 26.	= 26.

	Arctostaphylos pechoensis	Arctostaphylos morroensis
Phenology	Flowering winter–early spring.	Flowering winter–early spring.
Habitat	Maritime chaparral on siliceous shale soils	Maritime chaparral on sandy soils near coast
Elevation	0-300 m (0-1000 ft)	0-100 m (0-300 ft)
Distribution	CA [BONAP county map]	CA [WildflowerSearch map] [BONAP county map]
Discussion	Of conservation concern. Arctostaphylos pechoensis is known from the vicinity of the Pecho Hills, San Luis Obispo County. (Discussion copyrighted by Flora of North America; reprinted with permission.)	Of conservation concern. Arctostaphylos morroensis is known from the Morro Bay region in San Luis Obispo County. (Discussion copyrighted by Flora of North America; reprinted with permission.)
Source	FNA vol. 8, p. 434.	FNA vol. 8, p. 432.
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. 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. 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	Uva-ursi pechoensis
Name authority	(Abrams) Dudley ex Eastwood: Leafl. W. Bot. 1: 62. 1933 ,	Wieslander & B. Schreiber: Madroño 5: 42, fig. 2a. 1939 ,
Web links	Local floras: CA Local Web sites: CalFlora, CalPhotos WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search	Local floras: CA Local Web sites: CalFlora, CalPhotos WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search

Arctostaphylos morroensis

Pecho manzanita

Morro manzanita

Habit

Shrubs, erect, 1–5 m; burl absent; twigs short-hairy with long, white hairs.

Shrubs, erect or mound-forming, 1–4 m; burl absent; bark on older stems persistent, gray, shredded; twigs short-hairy with long, white hairs.

Leaves

petiole 1–4 mm;

blade glaucous, dull to ± shiny, oblong-ovate, 2–5 × 1–2.5 cm, base auriculate-clasping, margins entire, plane, surfaces smooth, puberulent, glabrescent.

bifacial in stomatal distribution;

petiole 2–5 mm;

blade dull gray abaxially, dark green, ± shiny adaxially, oblong-ovate to oblong-elliptic, 1.5–3 × 1–2 cm, base subcordate to ± truncate (sometimes with vestigial auricles), margins entire, cupped, abaxial surface smooth, densely tomentose, adaxial surface smooth, glabrous.

Inflorescences

panicles, 1–4-branched;

immature inflorescence pendent, (branches dense, framed by bracts), axis 1–1.5 cm, 1+ mm diam., short-hairy with long, white hairs;

bracts not appressed, leaflike, linear-lanceolate, 8–15 mm, apex acuminate, surfaces glabrous.

panicles, 2–5-branched;

immature inflorescence pendent, (branches congested, bell-shaped, partly framed by bracts), axis 0.5–0.8 cm, 1+ mm diam., short-hairy with long, white hairs;

bracts not appressed, leaflike, linear-lanceolate, 5–8 mm, apex acuminate, surfaces puberulent.

Pedicels

5–10 mm, glabrous.

4–6 mm, hairy or glabrous.

Flowers

corolla white, conic to urceolate;

ovary hairy.

corolla white, urceolate;

ovary densely white-hairy.

Fruits

depressed-globose, 8–12 mm diam., glabrous.

depressed-globose, 7–10 mm diam., sparsely hairy.

Stones

partially to entirely connate.

distinct.

= 26.

Arctostaphylos pechoensis

Arctostaphylos morroensis

Phenology

Flowering winter–early spring.

Habitat

Maritime chaparral on siliceous shale soils

Maritime chaparral on sandy soils near coast

Elevation

0-300 m (0-1000 ft)

0-100 m (0-300 ft)

Distribution

[BONAP county map]

[WildflowerSearch map]

[BONAP county map]

Discussion

Of conservation concern.

Arctostaphylos pechoensis is known from the vicinity of the Pecho Hills, San Luis Obispo County.

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

Of conservation concern.

Arctostaphylos morroensis is known from the Morro Bay region in San Luis Obispo County.

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

Source

FNA vol. 8, p. 434.

FNA vol. 8, p. 432.

Parent taxa

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. 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. 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

Uva-ursi pechoensis

Name authority

(Abrams) Dudley ex Eastwood: Leafl. W. Bot. 1: 62. 1933 ,

Wieslander & B. Schreiber: Madroño 5: 42, fig. 2a. 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).

Choose a data source: Flora of North America

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Flora of North America species comparison

Arctostaphylos pechoensis

Arctostaphylos morroensis

Arctostaphylos pechoensis

Arctostaphylos morroensis