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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Gary D. Wallace, except as specified

Perennial, shrub, tree
Stem: bark often peeling distinctively
Leaves simple, generally cauline, alternate, opposite, rarely whorled, evergreen or deciduous, often leathery, petioled or not; stipules 0
Inflorescence: raceme, panicle, cyme, or flowers solitary, generally bracted; pedicels often with 2 bractlets
Flower generally bisexual, generally radial; sepals generally 4–5, generally free; petals generally 4–5, free or fused; stamens 8–10, free, filaments rarely appendaged, anthers awned or not, dehiscent by pores or slits; nectary generally at ovary base, disk-like; ovary superior or inferior, chambers generally 1–5, placentas axile or parietal, ovules 1–many per chamber, style 1, stigma head- to funnel-like or lobed
Fruit: capsule, drupe, berry
Seeds generally many, sometimes winged
Genera in family: ± 100 genera, 3000 species: generally worldwide except deserts; some cultivated, especially Arbutus, Arctostaphylos, Rhododendron, Vaccinium
Reference: [Wallace 1975 Wasmann J Biol 33:1–88; 1975 Bot Not 128:286–298]
Subfamilies Monotropoideae, Pyroloideae, Vaccinioideae sometimes treated as families. Nongreen plants obtain nutrition from green plants through fungal intermediates.


Shrub, small tree, generally hairy to glandular, densely, rigidly branched, burled
Stem: bark often shredding
Leaves alternate, evergreen, leathery, entire or serrate
Inflorescence: raceme or panicle, bracted; bractlets 2
Flower: sepals (4)5, fused, lobes > tube; petals (4)5, fused, urn-shaped; stamens (8)10, anthers dehiscent by short separate slits, awned; ovary superior, chambers 4–6, placentas pendent, axile
Fruit: drupe, juicy, papillate, red or black; stones 4–6, fused into a unit
Seeds 1 per stone
Species in genus: 10 species: subtropical, tropical Am
Etymology: (Greek: arbutus cluster, from strawberry-tree-like fruits)


C. diversifolia (Parry) Greene

Stem erect, < 5 m; twigs gray-tomentose; bark shredding
Leaf obovate, entire or serrate
Inflorescence: raceme, generally gray-tomentose; bracts < 7–10 mm, lance-linear to oblong-ovate
Flower: sepals lanceolate or narrowly triangular
Fruit red
Ecology: Chaparral
Elevation: 100–550 m.
Bioregional distribution: South Coast, Channel Islands, Western Transverse Ranges, Peninsular Ranges
Distribution outside California: to n Baja California


subsp. planifolia (Jeps.) G.D. Wallace

Inflorescence 6–14 cm
Ecology: Uncommon. Chaparral
Elevation: 100–600 m.
Bioregional distribution: n Channel Islands (Santa Rosa, Santa Cruz islands), s Channel Islands (Santa Catalina Island), Western Transverse Ranges
Synonyms: var. planifolia Jeps
Horticultural information: DRN: 14, 15, 16, 17, 24 &afternoonSHD: 7, 18, 19, 20, 21, 22, 23.

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bioregional map for COMAROSTAPHYLIS%20diversifolia%20subsp.%20planifolia 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 Comarostaphylis diversifolia subsp. planifolia
Retrieve dichotomous key for Comarostaphylis
Overlay Consortium of California Herbaria specimen data by county on this map
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