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Rhododendron viscosum (L.) Torr.
SWAMP AZALEA
Life   Plantae   Dicotyledoneae   Ericaceae   Rhododendron

Rhododendron viscosum, Swamp Azalea
© Copyright Sheryl Pollock 2011 · 9
Rhododendron viscosum, Swamp Azalea

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Rhododendron viscosum
© Copyright Bobby Hattaway 2011 · 5
Rhododendron viscosum
Rhododendron viscosum
© Copyright Bobby Hattaway 2011 · 5
Rhododendron viscosum

Rhododendron viscosum
© Copyright Bobby Hattaway 2011 · 5
Rhododendron viscosum
Rhododendron viscosum
© Copyright Bobby Hattaway 2011 · 5
Rhododendron viscosum

Rhododendron viscosum
© Copyright Bobby Hattaway 2011 · 5
Rhododendron viscosum
Rhododendron viscosum
© Copyright Bobby Hattaway 2011 · 5
Rhododendron viscosum

Rhododendron viscosum
© Copyright Bobby Hattaway 2011 · 5
Rhododendron viscosum
Rhododendron viscosum
© Copyright Bobby Hattaway 2011 · 5
Rhododendron viscosum

Rhododendron viscosum
© Copyright Bobby Hattaway 2011 · 5
Rhododendron viscosum
Rhododendron viscosum
© Copyright Bobby Hattaway 2011 · 5
Rhododendron viscosum

Rhododendron viscosum
© Copyright Bobby Hattaway 2011 · 5
Rhododendron viscosum
Rhododendron viscosum
© Copyright Bobby Hattaway 2011 · 5
Rhododendron viscosum

Rhododendron viscosum
© Copyright Bobby Hattaway 2011 · 5
Rhododendron viscosum
Rhododendron viscosum
© Copyright Bobby Hattaway 2011 · 5
Rhododendron viscosum

Associates · map
FamilyScientific name @ source (records)
Amphisphaeriaceae  Pestalotia guepinii @ BPI (1)
Andrenidae  Andrena cornelli @ AMNH_BEE (4)
Apidae  Anthophora abrupta @ AMNH_BEE (1)

Bombus bimaculatus @ AMNH_BEE (1)
Exobasidiaceae  Exobasidium vaccinii @ BPI (19)
Halictidae  Lasioglossum oblongum @ CUIC_ENT (2)
Miridae  Rhinocapsus rubricans @ AMNH_PBI (6)

Rhinocapsus vanduzeei @ AMNH_PBI (3)
Pucciniastraceae  Pucciniastrum myrtilli @ BPI (1)

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Following modified from Delaware Wildflowers
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Delaware Wildflowers  •  Scientific names

Rhododendron viscosum (L.) Torr. Swamp Azalea
Ericaceae — Heath family
Native
Rhododendron viscosum
Sussex County
June 2001

More information on this plant, from other sources.


Copyright David G. Smith

Delaware Wildflowers main page

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http://plants.usda.gov/java/profile?symbol=RHVI2 ---> https://plants.usda.gov/java/profile?symbol=RHVI2
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FNA | Family List | FNA Vol. 8 | Ericaceae | Rhododendron

24. Rhododendron viscosum (Linnaeus) Torrey, Fl. N. Middle United States. 424. 1824.

Swamp or clammy azalea

Azalea viscosa Linnaeus, Sp. Pl. 1: 151. 1753; A. oblongifolia Small; A. serrulata Small; Rhododendron coryi Shinners; R. oblongifolium (Small) Millais; R. serrulatum (Small) Millais; R. viscosum var. serrulatum (Small) H. E. Ahles

Shrubs or trees , to 7 m, rhizomatous or not. Stems: bark smooth to vertically furrowed, shredding; twigs sparsely to conspicuously multicellular eglandular-hairy (hairs unbranched), otherwise glabrous or densely unicellular-hairy. Leaves deciduous; petiole usually multicellular eglandular-hairy and unicellular-hairy; blade ovate to obovate, 2-7(-9) × 1-3(-3.8) cm, ± thin, membranous to chartaceous, margins entire or, sometimes, minutely serrulate, plane, ciliate, eglandular-hairy, apex acute to obtuse, often mucronate, abaxial surface glabrous or densely unicellular-hairy, adaxial surface (lustrous or dull), glabrous or sparsely scattered eglandular-hairy, sometimes also sparsely unicellular-hairy. Floral bud scales glabrous or densely unicellular-hairy abaxially (sometimes with sharply marked, dark brown band along distal margins), margins unicellular-ciliate or, sometimes, glandular-serrulate. Inflorescences 3-14-flowered; bracts similar to bud scales. Pedicels 5-27 mm, stipitate-glandular- or, sometimes, eglandular-hairy, otherwise sparsely to densely unicellular-hairy. Flowers opening after leaves, erect to horizontal, slightly to strongly fragrant (most noticeable at night); calyx lobes 0.5-5 mm, surfaces and margins scattered stipitate-glandular-hairy or, sometimes, eglandular-hairy, often also unicellular-hairy; corolla white, sometimes pink-tinged or pink (not strongly contrasting with white or greenish to pinkish style or filaments), without blotch on upper lobe, funnelform, 20-58 mm, usually scattered, often conspicuously stipitate-glandular-hairy (hairs continuing in lines up lobes), otherwise sparsely to moderately unicellular-hairy on outer surface, petals connate, lobes 7-21 mm, tube usually ± gradually expanded into lobes, 13-37 mm (equaling or much longer than lobes); stamens 5, much exserted, ± unequal, 21-65 mm. Capsules borne on erect pedicels, 7-20 × 3-7 mm, usually densely stipitate-glandular- and/or eglandular-hairy, otherwise densely unicellular-hairy to ± glabrous. Seeds without distinct tails, flattened portion of testa well developed at each end; testa expanded, dorsiventrally flattened, ± loose. 2 n = 26.

Flowering spring-summer. Acid swamps, bogs, seepage slopes, pocosins, streamheads and baygalls, wet pine flatwoods, moist pine or pine/oak forests, hummocks, shrub balds; 0-1500 m; Ala., Ark., Conn., Del., Fla., Ga., La., Maine, Md., Mass., Miss., N.H., N.J., N.Y., N.C., Okla., Pa., R.I., S.C., Tenn., Tex., Vt., Va.

Rhododendron viscosum is the most widespread and variable species of sect. Pentanthera and has been divided into as many as four species: R. coryi, R. oblongifolium, R. serrulatum , and R. viscosum in the narrow sense. In addition, minor varieties and forms have been described. Because correlated or geographically coherent sets of character states cannot be discerned within this species, infraspecific taxa are not recognized here (K. A. Kron 1993). Rhododendron viscosum is most closely related to R. arborescens , and possibly also R. atlanticum . Hybrids with R. cumberlandense and R. arborescens are known. Plants with white corollas and a yellow blotch may be the result of hybridization.

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Number of matches : 1
Query: SELECT * FROM img WHERE ready=1 and taxon like "Rhododendron viscosum%" and (lifeform != "specimen_tag" OR lifeform != "Plant") ORDER BY taxon

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Rhododendron viscosum
Rhododendron viscosum
Clammy Azalea
ID: 0024 3291 1999 0051 [detail]
Frithjof Holmboe
© 2000 California Academy of Sciences

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