Jepson Flora Project: Jepson Interchange    

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Jepson Interchange (more information)
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Elizabeth McClintock

Shrub, tree, sometimes ± dioecious, often thorny, generally densely silvery-hairy throughout; hairs often scale-like
Leaves simple, alternate or opposite, generally deciduous, entire; petiole generally short; stipules 0
Inflorescence generally umbel-like, axillary; flowers 1–few
Flower radial; hypanthium rotate to salverform, lower part generally receptacle-like, persistent, with a disk, becoming fleshy; sepals (hypanthium lobes) generally 4, ± petal-like; petals 0; anthers 4 or 8, ± sessile; ovary superior (appearing inferior), chamber 1, style 1
Fruit: achene enclosed in fleshy hypanthium, the whole drupe- or berry-like
Genera in family: 3 genera, ± 45 species: North America, Eur, Asia, e Australia; especially temp, subtropical
Reference: [Graham 1964 J Arnold Arbor 45:274–278]


Shrub, dioecious
Leaves opposite or some alternate
Staminate flower: hypanthium rotate; stamens 8; disk lobes alternate stamens
Pistillate flower: hypanthium urn-shaped, nearly closed at top; disk lobes 8, nearly meeting above ovary; stigma cap-like
Species in genus: 3 species: North America
Etymology: (John Shepherd, 1764–1836, curator of Liverpool Botanic Garden)


S. argentea Nutt.


Plant 2–6 m, much-branched, thorny
Leaf 2–6 cm, generally oblong, more silvery on lower surface
Flower: hypanthium greenish yellow inside
Staminate flower < 2 mm, ± 4 mm wide at top; tube < lobes
Pistillate flower ± 2 mm, 1 mm wide; tube > lobes
Fruit 5 mm, elliptic in outline, red
Ecology: Along streams, river bottoms, slopes
Elevation: 1000–2000 m.
Bioregional distribution: e Klamath Ranges, c High Sierra Nevada, South Coast Ranges, Western Transverse Ranges, San Bernardino Mountains, n East of Sierra Nevada
Distribution outside California: to Canada, c US
Flowering time: Apr–May
Fr sour, made into sauce eaten with buffalo meat along Overland Trail; sometimes cultivated as ornamental
Horticultural information: SUN, DRN: 4, 5, 6, 10 &IRR: 1, 2, 3, 7, 8, 9, 10, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24; STBL.

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bioregional map for SHEPHERDIA%20argentea 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 Shepherdia argentea
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