Jepson Flora Project: Jepson Interchange    

 
link to manual TREATMENT FROM THE JEPSON MANUAL (1993) previous taxon | next taxon
Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California

    THIS PAGE IS NO LONGER UPDATED
    AND IS MAINTAINED FOR ARCHIVAL PURPOSES ONLY
  • Up-to-date information about California vascular plants is available from the Jepson eFlora.

ERICACEAE

HEATH FAMILY

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.

RHODODENDRON

Shrub, tree, glabrous to hairy
Stem prostrate to erect; bark generally thin
Leaves alternate, evergreen or deciduous; margin entire to serrate
Inflorescence umbel-like; bud scales deciduous; bracts, bractlets scarious; pedicels not jointed to flower
Flower radial to bilateral, generally showy; sepals generally 5, fused at base; petals generally 5, ± 3/4 fused, shallowly bell- to funnel-shaped; stamens 5–10(16), generally exserted, anthers elongate, each chamber dehiscent by terminal pore, unawned; ovary superior, chambers generally 5(4–12), placentas axile
Fruit: capsule, septicidal, dehiscent tip to base
Seeds many per chamber, fusiform or not; wing 0 or wide
Species in genus: ± 1000 species: temp n hemisphere, Australia
Etymology: (Greek: rose tree)

previous taxon | next taxon
bioregional map for RHODODENDRON being generated
 


Retrieve Jepson Interchange Index to Plant Names entry for Rhododendron
Retrieve dichotomous key for Rhododendron
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
Return to the Jepson Interchange main page
Return to treatment index page
Glossary


University & Jepson Herbaria Home Page |
General Information | University Herbarium | Jepson Herbarium |
Visiting the Herbaria | On-line Resources | Research |
Education | Related Sites
Copyright © by the Regents of the University of California