Jepson Flora Project: Jepson Interchange    

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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
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Fosiée Tahbaz

Subshrub or shrub, low, evergreen, generally dioecious
Leaves alternate, linear to oblong, stiff, deeply grooved beneath (leaf seeming rolled under)
Inflorescence: flowers solitary or few, axillary or terminal, ± sessile
Flower: perianth segments 3–6, sometimes differentiated into sepals and petals
Staminate flower: stamens 2–4
Pistillate flower: ovary superior, chambers 2–9, ovule 1 per chamber, style deeply 2–9-lobed
Fruit: drupe, dry or juicy; stones 2–9
Genera in family: 3 genera, ± 5 species: cold temperate; most cultivated as ornamental.



Flower small, inconspicuous; sepals 3; petals 3; stamens 3 per staminate flower, alternate petals
Fruit berry-like, black or red
Species in genus: ± 2 species: n&s cold temperate zones
Etymology: (Greek: on rocks, from habitat)


E. nigrum L.


Stem ± decumbent; branches many, 15–40 cm
Leaves crowded, 3–6 mm, glabrous except along groove
Flower: perianth dark purplish red; filaments < 4 mm
Fruit 4–6 mm diam, black
Chromosomes: 2n=26
Ecology: Rocky sea cliffs, in coastal scrub
Elevation: < 200 m.
Bioregional distribution: n North Coast (Del Norte, Humboldt cos.)
Distribution outside California: to Alaska; circumboreal
CA populations scattered, small. Plants with bisexual flowers have been called subsp. hermaphroditum (Lange) Böcher; most CA plants seem dioecious
Horticultural information: In cultivation.

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bioregional map for EMPETRUM%20nigrum being generated
YOU CAN HELP US make sure that our distributional information is correct and current. If you know that a plant occurs in a wild, reproducing state in a Jepson bioregion NOT highlighted on the map, please contact us with that information. Please realize that we cannot incorporate range extensions without access to a voucher specimen, which should (ultimately) be deposited in an herbarium. You can send the pressed, dried collection (with complete locality information indicated) to us (e-mail us for details) or refer us to an accessioned herbarium specimen. Non-occurrence of a plant in an indicated area is difficult to document, but we will especially value your input on those types of possible errors (see automatic conversion of distribution data to maps).

Retrieve Jepson Interchange Index to Plant Names entry for Empetrum nigrum
Retrieve dichotomous key for Empetrum
Overlay Consortium of California Herbaria specimen data by county on this map
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