A Study, Anatomical and Taxonomic, of the Genera of Rhododendroideae

Copeland, Herbert F.

doi:10.2307/2421205

Cited by 48 publications

(51 citation statements)

References 12 publications

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“…Brim & Stevens, Kalmiopsis Rehder, Phyllodoce Salisb., Rhodothamnus Reichb. and Kalmia s.l (Bohm et al 1978, Copeland 1943, Ebinger 1974, Meinke & Kaye 2007, Southall & Hardin 1974, Stevens 1971 …”

Section: Enkianthus Lourmentioning

confidence: 99%

Miocene carpological floras of the Konin region (Central Poland)

Kowalski¹

2017

Acta Palaeobotanica

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ABSTRACT. Carbonaceous, three-dimensionally preserved macroscopic plant remains from the Lubstów, Gosławice and Pątnów brown coal open-pit mines are described and illustrated, providing a comprehensive elaboration of the middle Miocene carpological floras of the Konin region. The diaspores represent the following families: Pinaceae, Sciadopityaceae, Cupressaceae, Annonaceae, Cabombaceae, Nymphaeaceae, Araceae, Typhaceae, Cyperaceae, Vitaceae, Rosaceae, Rhamnaceae, Fagaceae, Myricaceae, Cornaceae, Nyssaceae, Symplocaceae, Ericaceae, Araliaceae, and Adoxaceae. Forty-two species were recognised or documented for the first time in the Konin region. Two genera, three species and three morphotypes are described as new taxa.Most of these plant remains represent azonal vegetation. Ericaceous bogs, pine bogs and mixed coniferous bogs, accompanied by Gyptostrobus swamp forests and various aquatic plant communities, are suggested as the most widespread vegetation types. Remains representing mesophytic, zonal vegetation, resembling extant evergreen broad-leaved and mixed mesophytic forests, are sparse. A Sciadopitys raised bog, a mixed coniferous bog subtype, was one of the important biomass sources forming the brown coal of the I-Middle Polish seam group. Other bog types recognised in Lubstów presumably also played a part in this process. Wildfire is suggested as an important factor controlling the Miocene vegetation of the Konin region.The floristic composition and lithostratigraphy indicate the Badenian age (16.3-12.8 Ma) for the studied floras, but radiometric data suggest that two Lubstów floras are older and one is younger than 13.6 Ma. Biostratigraphically, Lubstów floras were correlated with the Klettwitz -Salzhausen floristic complex. Based on several climatic indicators and biostratigraphic correlation, the climate is estimated to have been humid, warm-temperate or subtropical.The upper Miocene lower Rhenish Basin floras are the most comparable in floristic and plant communities' composition. Tropical -subtropical, Mediterranean and extinct genera represent approximately 40% of the genera identified in Lubstów.

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Section: Enkianthus Lourmentioning

confidence: 99%

Miocene carpological floras of the Konin region (Central Poland)

Kowalski¹

2017

Acta Palaeobotanica

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“…The Philipsons (M. Philipson, 1980;W. Philipson, 1980) have indicated that the name is available for use if typified by R quinquefolium (following Copeland, 1943). In addition to R. quinquefolium and R schlippenbachii, Wilson & Rehder (1921) included several species now considered in sect.…”

Section: Specimens Examinedmentioning

confidence: 99%

“…30: 597 (1943). Lectotype: Rhododendron quinquefolium Bisset & Moore (selected byCopeland, 1943). Shrub or small tree; indumentum of unicellular hairs and multicellular gland-headed to eglandular hairs; new foliage shoots arising from axillary buds associated with the lowest scaly leaves of the present year's shoots, i.e.…”

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confidence: 99%

A revision of Rhododendron VI. Subgenus Pentanthera (Sections Sciadorhodion, Rhodora and Viscidula)

Judd

Kron

2010

Edinburgh J. Bot.

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A revision of the seven species of Rhododendron sections Sciadorhodion, Viscidula and Rhodora (of subgenus Pentanthera; Ericaceae) is presented. A cladistic analysis of Rhododendron subgenus Pentanthera is provided, and results in the recognition of four sections: Sciadorhodion, Viscidula, Rhodora and Pentanthera. The species are delimited and compared, their distributions are mapped, and descriptions and practical keys are developed.

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“…However, so far no detailed epidermal morphological studies have been conducted on all of rhododendron species though some researchers had done some anatomical researches for some other species of this genus (Copeland 1943;Cox 1948). The main objective of the present work is to investigate and describe the epidermal micromorphological fingerprint of 6 Rhododendron species in order to provide more detailed descriptions to discuss their taxonomic significance.…”

Section: Introductionmentioning

confidence: 99%

Significance of the leaf epidermis fingerprint for taxonomy of Genus Rhododendron

Wang

Choi

et al. 2006

J. of For. Res.

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Leaf epidermal fingerprints of six species of Rhododendron(Rh. Aureaum, Rh. dauricum, Rh. micranthum, Rh. Mucronulatum, Rh. Redowskianum, Rh. schlippenbachii)were observed by optical microscope with nail polish expression method in Key Laboratory of Forest Plant Ecology of Ministry Education China in Northeast Forestry University in 2004. The leaf morphological features including of stomata types, characters of guard cells, subsidiary cells in lower epidermis were observed. And ordinary cells (in shape and anticlinal walls feature) as well as the trichomes in both sides of the leaves are described in detail. The results showed that there were three types of stoma in six investigated Rhododendron species, from which Pericytic stomata type exists in three species (Rh. dauricum, Rh. micranthum, and Rh. mucronulatum), Anomocytic stomatal type in Rh. Redowskianum, Diacytic stomata type in Rh. aureaum and Rh. schlippenbachii. The subsidiary cells of the Pericytic and Diacytic stomata type are different in shape and surface feature between the species, respectively. The ordinary epidermal cells show a variety from quadrangular to hexagonal, polygonal or irregular in surface view, the anticlinal walls are straight or sinuose. Trichomes (gland scales) are present in the both of the leaf sides in three species (Rh. dauricum, Rh. micranthum, and Rh. mucronulatum). All of these detail leaf features show specific specificity of leave finger print for 6 rhododendrons.

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A Study, Anatomical and Taxonomic, of the Genera of Rhododendroideae

Cited by 48 publications

References 12 publications

Miocene carpological floras of the Konin region (Central Poland)

Miocene carpological floras of the Konin region (Central Poland)

A revision of Rhododendron VI. Subgenus Pentanthera (Sections Sciadorhodion, Rhodora and Viscidula)

Significance of the leaf epidermis fingerprint for taxonomy of Genus Rhododendron

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