Common Name: HEATH FAMILY Habit: Perennial herb, shrub, tree. Stem: bark often peeling distinctively. Leaf: simple or 0, generally cauline, alternate, opposite (whorled), evergreen or deciduous, often leathery, petioled or not; stipules 0. Inflorescence: raceme, panicle, cyme, or flowers 1, terminal or axillary, generally bracted; pedicel often with 2 bractlets. Flower: generally bisexual, generally radial, bell-shaped, cylindric, or urn-shaped; sepals generally (0)4--5, generally free; petals generally (0)4--5, free or fused; stamens (2--5)8--10, free, filaments rarely appendaged, anthers dehiscing by pores or slits, awns 0 or 2(4), seemingly abaxial, reduced or elongate, generally curved; nectary generally present at ovary base, generally 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. Seed: generally many, winged or not. Genera In Family: +- 100 genera, 3000 species: generally worldwide except deserts; some cultivated, especially Arbutus, Arctostaphylos, Rhododendron, Vaccinium. Note: Monophyletic only if Empetraceae included, as treated here. Ledum included in Rhododendron. Non-green plants obtain nutrition from green plants through fungal intermediates. eFlora Treatment Author: Gary D. Wallace, except as noted Scientific Editor: Gary D. Wallace, Thomas J. Rosatti, Bruce G. Baldwin.
Habit: Shrub to tree, glabrous, hairy, and/or with glandular scale-like hairs. Stem: prostrate to erect, bark thin, sometimes peeling or shredding. Leaf: alternate, evergreen or deciduous, ovate to obovate to elliptic, margin entire, flat to rolled under. Inflorescence: raceme, 1--many-flowered, bracts green to red-brown. Flower: sepals, petals generally 5, corolla radial to bilateral, 1--5 cm, petals free to +- fused, spots or blotch present or 0; anther awns 0; ovary superior. Fruit: capsule, septicidal, dehiscing base to tip or tip to base, placentas axile. Seed: many, fusiform, +- flat to not, wings and/or tails present or 0. Etymology: (Greek: rose tree) eFlora Treatment Author: Kathleen A. Kron & Walter S. Judd Unabridged Reference: Chamberlain 1982. Notes Roy. Bot. Gard. Edinburgh 39:209--486; Cullen 1980 Notes Roy. Bot. Gard. Edinburgh 39:1--207
Rhododendron occidentale (Torr. & A. Gray) A. Gray
NATIVE Habit: Hairs sparse to dense, glandular or not. Stem: <= 8 m, densely branched, hairy. Leaf: (2.5)3.5--8.2(10.8) cm, (0.8)1.2--2.9(3.6) cm wide, deciduous, margin ciliate. Inflorescence: short, 3--15-flowered, bracts red-brown, margins ciliate or glandular. Flower: corolla widely funnel-shaped, white to pink to salmon, upper petal yellow- to orange-blotched; stamens 5, +- equal. Fruit: longer than wide, dehiscing tip to base. Seed: ovate to fusiform, coat expanded around seed. Chromosomes: 2n=26. Ecology: Streambanks, ocean bluffs, moist wooded slopes and canyon bottoms, serpentine ridges; Elevation: < 2700 m. Bioregional Distribution: NW (exc NCoRH), CaRH, n SNF, SNH, CCo, SnFrB, n SCoRI, PR; Distribution Outside California: Oregon. Flowering Time: Apr--Aug Jepson eFlora Author: Kathleen A. Kron & Walter S. Judd Index of California Plant Names (ICPN; linked via the Jepson Online Interchange) Previous taxon: Rhododendron macrophyllum Next taxon: Sarcodes
Jepson Video for Rhododendron occidentale
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Botanical illustration including Rhododendron occidentale
Citation for this treatment: Kathleen A. Kron & Walter S. Judd 2012, Rhododendron occidentale, in Jepson Flora Project (eds.) Jepson eFlora, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=41152, accessed on December 08, 2023.
Citation for the whole project: Jepson Flora Project (eds.) 2023, Jepson eFlora, https://ucjeps.berkeley.edu/eflora/, accessed on December 08, 2023.
Geographic subdivisions for Rhododendron occidentale:
NW (exc NCoRH), CaRH, n SNF, SNH, CCo, SnFrB, n SCoRI, PR
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(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.
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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).