Jepson eFlora: Taxon page
Vascular Plants of California
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Lyonothamnus floribundus subsp. floribundus

Higher Taxonomy
Family: RosaceaeView DescriptionDichotomous Key
Common Name: ROSE FAMILY
Habit: Annual to tree, glandular or not. Leaf: simple to palmately or pinnately compound, generally alternate; stipules free to fused (0), persistent to deciduous. Inflorescence: cyme, raceme, panicle, cluster, or flowers 1; bractlets on pedicel ("pedicel bractlets") generally 0--3(many), subtended by bract or generally not. Flower: generally bisexual, radial; hypanthium free or fused to ovary, saucer- to funnel-shaped, subtending bractlets ("hypanthium bractlets") 0--5, alternate sepals; sepals generally 5; petals generally 5, free; stamens (0,1)5--many, anther pollen sacs generally 2; pistils (0)1--many, simple or compound, ovary superior to inferior, styles 1--5. Fruit: 1--many per flower, achene (fleshy-coated or not), follicle, drupe, or pome with generally papery core, occasionally drupe-like with 1--5 stones. Seed: generally 1--5 (per fruit, not per flower).
Genera In Family: 110 genera, +- 3000 species: worldwide, especially temperate; many cultivated for ornament, fruit, especially Cotoneaster, Fragaria, Malus, Prunus, Pyracantha, Rosa, Rubus. Note: Number of teeth is per leaf or leaflet, not per side of leaf or leaflet, except in Drymocallis.
eFlora Treatment Author: Daniel Potter & Barbara Ertter, family description, key to genera, treatment of genera by Daniel Potter, except as noted
Scientific Editor: Daniel Potter, Thomas J. Rosatti.
Genus: LyonothamnusView Description 


Etymology: (Greek: Lyon's shrub, for W.S. Lyon, early resident of Los Angeles)
eFlora Treatment Author: Steve Junak & Dieter H. Wilken
Species: Lyonothamnus floribundusView DescriptionDichotomous Key

Habit: Tree, evergreen. Stem: trunk bark gray to red-brown, peeling in strips. Leaf: opposite, simple or compound; stipules deciduous; petiole 1--3 cm; blade +- gray abaxially, dark shiny green adaxially. Inflorescence: panicle, generally flat-topped; pedicel bractlets 1--3, at top. Flower: hypanthium bell-shaped, tomentose, bractlets 0; sepals persistent; petals +- round, white; stamens +- 15; pistils 2, ovary superior, style stout, stigma +- head-like. Fruit: follicles 2, 3--4 mm, woody. Seed: 1--4, +- 2 mm, compressed, +- brown.
Note: Subspecies hybridize in cultivation; endemic to ChI.
Lyonothamnus floribundus A. Gray subsp. floribundus
Habit: Plant 5--15 m. Leaf: 7--17 cm, linear to oblong, generally entire (crenate to irregularly lobed). Chromosomes: 2n=+-48.
Ecology: Rocky slopes, canyons, oak woodland, chaparral; Elevation: 100--500 m. Bioregional Distribution: s ChI (Santa Catalina Island). Flowering Time: May--Jun Note: Threatened by feral animals. Seedling leaves often compound.
Jepson eFlora Author: Steve Junak & Dieter H. Wilken
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)
Listed on CNPS Rare Plant Inventory

Previous taxon: Lyonothamnus floribundus subsp. aspleniifolius
Next taxon: Malus

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Botanical illustration including Lyonothamnus floribundus subsp. floribundus

botanical illustration including Lyonothamnus floribundus subsp. floribundus

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Citation for this treatment: Steve Junak & Dieter H. Wilken 2012, Lyonothamnus floribundus subsp. floribundus, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on June 25, 2024.

Citation for the whole project: Jepson Flora Project (eds.) 2024, Jepson eFlora,, accessed on June 25, 2024.

No expert verified images found for Lyonothamnus floribundus subsp. floribundus.

Geographic subdivisions for Lyonothamnus floribundus subsp. floribundus:
s ChI (Santa Catalina Island).
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map of distribution 1
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).


Data provided by the participants of the  Consortium of California Herbaria.
View all CCH records
All markers link to CCH specimen records. The original determination is shown in the popup window.
Blue markers indicate specimens that map to one of the expected Jepson geographic subdivisions (see left map). Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.

CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa, if there are more than 1 infraspecific taxon in CA.
Blue line denotes eFlora flowering time (fruiting time in some monocot genera).