Difference between revisions of "Rhamnus pirifolia"

Greene

Pittonia 3: 15. 1896.

Common names: Island redberry
Synonyms: Rhamnus crocea subsp. pirifolia (Greene) C. B. Wolf R. crocea var. pirifolia (Greene) Little
Treatment appears in FNA Volume 12. Treatment on page 47. Mentioned on page 46.
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Latest revision as of 18:24, 29 July 2020

Shrubs to small trees, 2.5–6 (–10) m, unarmed. Branchlets purple to gray, glabrous or puberulent. Leaves persistent, alternate; petiole 5–10 mm; blade dull reddish to yellowish-brown abaxially, usually shiny green adaxially, broadly elliptic to oblong or ovate-oblong, (1.5–) 2–5 (–6) cm, distinctly coriaceous, base cuneate to nearly truncate, margins blunt-serrate or entire, apex acute to rounded, apiculate, both surfaces glabrous; secondary-veins 5–9 pairs, all diverging at nearly same angle. Inflorescences fascicles or flowers solitary. Pedicels 3–6 mm. Sepals 4. Petals 0. Drupes red, globose, 6–8 mm; stones 2.


Phenology: Flowering (Jan–)Feb–Jun.
Habitat: Steep slopes, canyon walls and bottoms, dunes, grasslands, coastal sage scrub, chaparral, pine woodlands.
Elevation: 10–500 m.

Distribution

V12 535-distribution-map.jpg

Calif., Mexico (Baja California)

Discussion

Rhamnus pirifolia is known in California on the Channel Islands and in Baja California on Guadalupe Island; it has not been implicated in hybridization with other members of the R. crocea complex.

Selected References

None.

Lower Taxa

None.

"thin" is not a number.

... more about "Rhamnus pirifolia"
perigynous +  and epigynous +
acute +  and rounded +
Guy L. Nesom +  and John O. Sawyer† +
Greene +
cuneate to nearly +
5 cm50 mm <br />0.05 m <br /> (6 cm60 mm <br />0.06 m <br />) +
green +, reddish +  and yellowish-brown abaxially +
3[-5]-veined +  and pinnate +
spinulose +, spinose +, serrate +  and entire +
denticulate +, dentate +, crenulate +, crenate +  and serrulate +
broadly elliptic;oblong or ovate-oblong +
2 cm20 mm <br />0.02 m <br /> (5 cm50 mm <br />0.05 m <br />) +
coriaceous +
puberulent +  and glabrous +
Island redberry +
Calif. +  and Mexico (Baja California) +
globose +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
10–500 m. +
bisexual +  and unisexual +
Steep slopes, canyon walls and bottoms, dunes, grasslands, coastal sage scrub, chaparral, pine woodlands. +
circumscissile +
free +  and adnate +
campanulate +  and cupulate +
unisexual +  and bisexual +
persistent +
entire +  and blunt-serrate +
intrastaminal +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
not fleshy +
perigynous +  and epigynous +
yellowish +  and cream +
adnate +  and distinct +
not clawed +  and spatulate +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Flowering (Jan–)Feb–Jun. +
2-4-carpellate +
oblong-obovoid +  and obovoid +
greenish white +  and white +
distinct +
crested;not keeled;ovate-triangular +
opposite +  and subopposite +
4 +  and 5 +
2 +  and 4 +
Rhamnus crocea subsp. pirifolia +  and R. crocea var. pirifolia +
Rhamnus pirifolia +
species +
600 cm6,000 mm <br />6 m <br /> (1,000 cm10,000 mm <br />10 m <br />) +
deciduous +  and evergreen +
spreading +  and erect +
polygamous +, dioecious +  and synoecious +