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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Annual to tree
Leaves simple to pinnately to palmately compound, generally alternate; stipules free to fused, persistent to deciduous
Inflorescence: cyme, raceme, panicle, or flowers solitary
Flower generally bisexual, radial; hypanthium free or fused to ovary, saucer- to funnel-shaped, often with bractlets alternate with sepals; sepals generally 5; petals generally 5, free; stamens (0)5–many, pistils (0)1–many, simple or compound; ovary superior to inferior, styles 1–5
Fruit: achene, follicle, drupe, pome, or blackberry- to raspberry-like
Seeds generally 1–5
Genera in family: 110 genera, ± 3000 species: worldwide, especially temp. Many cultivated for ornamental and fruit, especially Cotoneaster , Fragaria , Malus , Prunus , Pyracantha, Rosa , and Rubus
Reference: [Robertson 1974 J Arnold Arbor 55:303–332,344–401,611–662]
Family description, key to genera by Barbara Ertter and Dieter H. Wilken.



Dieter H. Wilken

Species in genus: 1 sp
Etymology: (Greek: Lyon's shrub, W.S. Lyon, early resident of Los Angeles)


L. floribundus A. Gray

Tree, evergreen
Stem: trunk bark gray to reddish brown, peeling in strips
Leaves opposite; stipules deciduous; petiole 1–3 cm; blade dark, shiny green above, ± grayish below
Inflorescence: panicle, generally flat-topped; bractlets 1–3
Flower: hypanthium bell-shaped, tomentose; sepals persistent; petals ± round, white; stamens ± 15; pistils 2, ovary superior, style stout, stigma ± head-like
Fruit: follicles 2, 3–4 mm, woody
Seeds 1–4, ± 2 mm, compressed, brownish
Ecology: Rocky slopes, canyons, oak woodland, chaparral
Elevation: 20–500 m.
Bioregional distribution: Channel Islands.Sspp. hybridize In cultivation.


subsp. floribundus


Plant 5–15 m
Leaf 7–17 cm, simple, linear to oblong, generally entire (crenate to irregularly lobed)
Chromosomes: 2n=±48
Ecology: Habitats of sp.
Elevation: 100–500 m.
Bioregional distribution: s Channel Islands (Santa Catalina Island).Threatened by feral animals. Seedling leaves often compound
Horticultural information: In cultivation.
See the CNPS Inventory for information about endangerment and rarity.
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bioregional map for LYONOTHAMNUS%20floribundus%20subsp.%20floribundus 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 Lyonothamnus floribundus subsp. floribundus
Retrieve dichotomous key for Lyonothamnus
Retrieve multiple-entry key (MEKA) for Lyonothamnus
Overlay Consortium of California Herbaria specimen data by county on this map
Show other taxa with the same California distribution | Read about bioregions | Get lists of plants in a bioregion
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