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Rhamnus alnifolia
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Alder Buckthorn
( Rhamnus alnifolia )
Rhamnus alnifolia
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More Info at Jepson eFlora
Calflora
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About Alder Buckthorn (Rhamnus alnifolia)
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Rhamnus alnifolia
is a species of flowering plant in the buckthorn family known by the common names alderleaf buckthorn, or alder buckthorn. It is native to North America, where it is known mainly from the southern half of Canada and the northern half of the United States and California. It can be found in forested habitat.
Rhamnus alnifolia
is a spreading shrub approaching two meters in maximum height, its thin branches bearing deciduous leaves. The thin, deeply veined leaves have oval blades up to 10 centimeters long, pointed at the tip and lightly toothed along the edges. The inflorescence is a solitary flower or umbel of up to three flowers occurring in leaf axils. The tiny flowers are just a few millimeters wide and lack petals. Female flowers drupes just under a centimeter wide, each containing three seeds. The drupes darken to black when ripe.
Rhamnus alnifolia
is a spreading shrub approaching two meters in maximum height, its thin branches bearing deciduous leaves. The thin, deeply veined leaves have oval blades up to 10 centimeters long, pointed at the tip and lightly toothed along the edges. The inflorescence is a solitary flower or umbel of up to three flowers occurring in leaf axils. The tiny flowers are just a few millimeters wide and lack petals. Female flowers drupes just under a centimeter wide, each containing three seeds. The drupes darken to black when ripe.
Plant Description
Plant Type
Shrub
Size
2 - 6.6 ft tall
Form
Upright
Growth Rate
Moderate
Dormancy
Winter Deciduous
Flower Color
Green, White
Flowering Season
Spring
Wildlife Supported
Butterflies & moths hosted ( 13
likely
* )
SHOW ALL
*
Pale Tiger Swallowtail
Papilio eurymedon
Papilio eurymedon
*
Ceanothus Silkmoth
Hyalophora euryalus
Hyalophora euryalus
*
Polyphemus moth
Antheraea polyphemus
Antheraea polyphemus
*
Elegant Sheepmoth
Hemileuca eglanterina
Hemileuca eglanterina
*
Wandering Tiger Moth
Spilosoma vestalis
Spilosoma vestalis
*
Tissue Moth
Triphosa haesitata
Triphosa haesitata
*
Common Eupithacia
Eupithecia miserulata
Eupithecia miserulata
Landscaping Information
Nurseries
Carried by 1
Soil Description
Prefers loamy or clay soils. Grows poorly in sandy soils.
Common uses
Bank Stabilization, Bird Gardens
Natural Setting
Climate
Annual Precipitation: 24.9" - 94.7", Summer Precipitation: 1.13" - 2.14", Coldest Month: 28.1" - 41.6", Hottest Month: 55.2" - 65.5", Humidity: 0.59" - 18.75", Elevation: 4086" - 6698"
Alternative Names
Common Names
: Alder-leaved Coffeeberry, Alderleaf Buckthorn, Alderleaf Coffeeberry
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Alder Buckthorn
Rhamnus alnifolia
Sources include:
Wikipedia
. All text shown in the "About" section of these pages is available under the
Creative Commons Attribution-ShareAlike License
. Plant observation data provided by the participants of the
California Consortia of Herbaria
, Sunset information provided by
Jepson Flora Project
. Propogation from seed information provided by the
Santa Barbara Botanical Garden
from "Seed Propagation of Native California Plants" by Dara E. Emery. Sources of plant photos include
CalPhotos
,
Wikimedia Commons
, and independent plant photographers who have agreed to share their images with Calscape. Other general sources of information include
Calflora
,
CNPS Manual of Vegetation Online
,
Jepson Flora Project
,
Las Pilitas
,
Theodore Payne
,
Tree of Life
,
The Xerces Society
, and information provided by CNPS volunteer editors, with special thanks to Don Rideout. Climate data used in creation of plant range maps is from
PRISM Climate Group, Oregon State University
, using 30 year (1981-2010) annual "normals" at an 800 meter spatial resolution.
Links:
Jepson eFlora Taxon Page
CalPhotos
Wikipedia
Calflora
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