R. Obert L. Dressler
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R. Obert L. Dresslerbiology Degrees
Biology
#12185
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#15643
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Systematics
#78
World Rank
#91
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Botany
#415
World Rank
#1253
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Biology
Why Is R. Obert L. Dressler Influential?
(Suggest an Edit or Addition)R. Obert L. Dressler's Published Works
Number of citations in a given year to any of this author's works
Total number of citations to an author for the works they published in a given year. This highlights publication of the most important work(s) by the author
Published Works
- Phylogeny and classification of the orchid family (1993) (1175)
- The Orchids: Natural History and Classification (1981) (1007)
- BIOLOGY OF THE ORCHID BEES (EUGLOSSINI) (1982) (496)
- Biologically active compounds in orchid fragrances. (1969) (398)
- POLLINATION BY EUGLOSSINE BEES (1968) (180)
- Classification and Phylogeny in the Orchidacea (1960) (155)
- How Many Orchid Species (2005) (131)
- A PHYLOGENETIC ANALYSIS OF LAELIINAE (ORCHIDACEAE) BASED ON SEQUENCE DATA FROM INTERNAL TRANSCRIBED SPACERS (ITS) OF NUCLEAR RIBOSOMAL DNA 1 (2000) (129)
- Two-year study of male orchid bee (Hymenoptera: Apidae: Euglossini) attraction to chemical baits in lowland south-eastern Perú (1985) (95)
- A revision of the Mexican and Central American species of Vanilla Plumier ex Miller with a characterization of their ITS region of the nuclear ribosomal DNA (2013) (88)
- A phylogenetic study of Laeliinae (Orchidaceae) based on combined nuclear and plastid DNA sequences. (2009) (79)
- Field Guide to the Orchids of Costa Rica and Panama (2019) (59)
- Eulaema Bombiformis, E. Meriana, and Müllerian Mimicry in Related Species (Hymenoptera: Apidae) (1979) (58)
- Comparative vegetative anatomy and systematics of Spiranthoideae (Orchidaceae) (1993) (57)
- New Species of Euglossa. IV. The Cordata and Purpurea Species Groups (Hymenoptera: Apidae) (1982) (50)
- Some floristic relationships between Mexico and the United States (1954) (37)
- Synonymic species list of Euglossini (1986) (35)
- The major clades of the Orchidaceae-Epidendroideae. (1990) (31)
- Nomenclatural Notes on the Orchidaceae III (1960) (29)
- GENERIC RELATIONSHIPS OF ZYGOPETALINAE (ORCHIDACEAE: CYMBIDIEAE): COMBINED MOLECULAR EVIDENCE (2015) (26)
- The Spiranthoideae: grade or subfamily? (1990) (26)
- Why do Euglossine Bees Visit Orchid Flowers (1967) (24)
- Euglossine Bees (Hymenoptera: Apidae) of the Tambopata Reserved Zone, Madre de Dios, Perú (1985) (24)
- Species Diversity of Euglossa in Panama (1969) (24)
- Phylogenetic systematics of subtribe Spiranthinae (Orchidaceae: Orchidoideae: Cranichideae) based on nuclear and plastid DNA sequences of a nearly complete generic sample (2018) (23)
- Heavy Metals in Cottontail Rabbits on Mined Lands Treated with Sewage Sludge (1986) (22)
- Observations on Orchids and Euglossine Bees in Panama and Costa Rica (2017) (22)
- Dark Pollinia in Hummingbird-Pollinated Orchids or do Hummingbirds Suffer from Strabismus? (1971) (21)
- MOLECULAR SYSTEMATICS OF TELIPOGON (ORCHIDACEAE: ONCIDIINAE) AND ITS ALLIES: NUCLEAR AND PLASTID DNA SEQUENCE DATA (2015) (19)
- Structure and Stereochemistry of Diels-Alder Adducts of Levopimaric Acid (1964) (18)
- Classification of the Orchidaceae and their probable origin (1983) (17)
- A reconsideration of Encyclia (orchidaceae) (1961) (17)
- Phylogenetic relationships of Scaphyglottis and related genera (Laeliinae: Orchidaceae) based on nrDNA ITS sequence data (2008) (16)
- Orchids of Panama (1980) (15)
- New species of Euglossa II. (Hymenoptera: Apidae) (2016) (15)
- The leaves got right again: DNA phylogenetics supports a sister-group relationship between Eurystyles and Lankesterella (Orchidaceae: Spiranthinae) (2011) (15)
- THE MAJOR SECTIONS OR GROUPS WITHIN SOBRALIA, WITH FOUR NEW SPECIES FROM PANAMA AND COSTA RICA, S. CRISPISSIMA, S. GLORIANA, S. MARIANNAE AND S. NUTANS (2002) (14)
- New species of Euglossa . III. The bursigera species group (Hymenoptera: Apidae) (2016) (14)
- New Species and Combinations in Costa Rican Orchids (1997) (13)
- The Neottieae in orchid classification. (1990) (12)
- 2019) Proposal to conserve the name Sobralia (Orchidaceae) with a conserved type (2011) (10)
- Guarianthe, a generic name for the “Cattleya” skinneri complex (2003) (9)
- The Lead Tetraacetate Oxidation of 1- and 2-Benzenesulfonamido- and Benzamidonaphthalenes1 (1962) (9)
- Fluorocarbon nitrogen compounds. XII. Catalytic perfluoroalkylation of halotriazines (1967) (9)
- ONCIDIUM SPECIES DESCRIBED BY JACQUIN AND THE TYPIFICATION OF ONCIDIUM (1973) (8)
- Notes on Bletia (Orchidaceae) (1968) (8)
- Notes on the genus Govenia in Mexico (Orch daceae) (1965) (7)
- Orchids of Panama : a facsimile reprint of the Orchidaceae, flora of Panama . With, A checklist of the orchids of Panama as known today (1980) (7)
- Two undescribed genera [Cypholoron, Psymgorchis] in the Orchidaceae- Oncidiinae (1972) (7)
- Serum Antibody Prevalence for Herpesvirus sylvilagus, Bacillus piliformis and California Serogroup Arboviruses in Cottontail Rabbits from Pennsylvania (1988) (7)
- An infrageneric classification of Euglossa , with notes on some features of special taxonomic importance (Hymnoptera; Apidae) (2016) (7)
- The genera Amblostoma, Lanium, and Stenoglossum (Orchidaceae) (1967) (6)
- 1142) Proposal to Conserve Scaphyglottis against Hexisea (Orchidaceae) (1994) (5)
- Identification manual for wetland plant species of Florida : used by the Florida Department of Environmental Regulation in determining the landward extent of waters of the state (1987) (5)
- Mesoamerican orchid novelties 3. (2000) (5)
- New species of Euglossa from Mexico and Central America (2016) (4)
- Three New Mesoamerican Taxa of Dichaea with Caducous Leaves (2006) (4)
- Two New White-Flowered Species of Sobralia (Orchidaceae) from Costa Rica (2014) (4)
- New combinations in Ornithocephalus (Ornithocephalinae: Orchidaceae) and description of a new species from Mesoamerica. (2000) (3)
- Sobralia decora: the species and its cousins in Mexico and Central America. (2012) (3)
- New orchid species from Costa Rica (1995) (3)
- THE CARMINE TRICHOPILIAS OF CENTRAL AMERICA: FEW BUT BADLY CONFUSED (2006) (3)
- Preparation of a radiobrominated fluorescein for liver scanning (1980) (3)
- Taxonomy of barkeria (Orchidaceae) (1970) (3)
- The systematic position of Cryptocentrum (orchidaceae) (1961) (3)
- New species and combinations in Costa Rican orchids. II (2016) (2)
- JACQUIN NAMES - AGAIN* (1975) (2)
- CLARIFICATIONS AND NEW COMBINATIONS IN THE PHRAGMIPEDIUM CAUDATUM COMPLEX FROM CENTRAL AMERICA (1998) (2)
- A NEW AND BIZARRE SPECIES IN THE GENUS CONDYLAGO (ORCHIDACEAE: PLEUROTHALLIDINAE) FROM PANAMA (2007) (2)
- Some reactions of the 4-(.alpha.,.alpha.-dicyanomethylene) derivatives of 1,2,3,4-tetrahydroquinoline, 1-methyl-1,4-dihydroquinoline, and 1-methyl-6-methoxy-1,4-dihydroquinoline (1967) (2)
- (679) Proposal for the Conservation of the Generic Name 1779 Oncidium Swartz (Orchidaceae) with a Conserved Type Species, Oncidium altissimum Sw. (1982) (2)
- Elleanthus ligularis, a name for a relatively common "new" sepecies of Elleantus sect. chloidelyna (2007) (2)
- MESOAMERICAN ORCHID NOVELTIES 4, MALAXIS (2003) (2)
- (409) Proposal for the Conservation of the Generic Name 1779 Oncidium Swartz (Orchidaceae) with a Conserved Type Species, Oncidium altissimum Sw. (1975) (2)
- SOME PROBLEMS IN TRICHOPILIA (ORCHIDACEAE: ONCIDIINAE) WITH TWO NEW SPECIES OF MODEST FLOWER SIZE (2005) (2)
- Fluorocarbon nitrogen compounds. XI. Functionally active perfluoroalkyl-substituted s-triazines (1967) (2)
- A new species of Ornithocephalus (Orchidaceae) from Panama (2006) (1)
- Local Polymorphism in Brachyrhaphis episcopi (Poecilidae) (1971) (1)
- Some new Sobraliae from Costa Rica and Panama (2013) (1)
- ANOTHER NEW SPECIES OF STELLILABIUM FROM MONTEVERDE, COSTA RICA (1995) (1)
- Stellilabium erratum, a comedy of blunders (2001) (1)
- Four new species of Erythrodes from Costa Rica and Panama (1993) (1)
- (408) Proposal for the Conservation of the Generic Name 1393b Phragmipedium Rolfe (1896) (Orchidaceae), against Uropedium Lindley (1846) (1975) (1)
- Scaphyglottis geminata, an attractive new species from Costa Rica (1993) (1)
- REVISIÓN TAXONÓMICA DEL GÉNERO WARCZEWICZELLA RCHB.F. (ORCHIDACEAE: MAXILARIEAE ) EN COLOMBIA (2011) (1)
- Kefersteinia excentrica, a distinctive new species from Costa Rica (1993) (1)
- SOBRALIA QUINATA, A NEW SPECIES IN SECTION GLOBOSAE (2003) (1)
- Species: what causes the patterns? (1990) (1)
- INDEX OF ORCHID NAMES- 1960 (1961) (1)
- Can Sobralias be classified? The problems of identifying ephemeral flowers. (2009) (1)
- Baskervilla leptantha, a distinctive new species from Costa Rica (1993) (0)
- Commentary on Pseudencyclia Chiron & Castro Neto (Orchidaceae) (2006) (0)
- Oncidium zelenkoanum (Orchidaceae), an unusual new species from Panama (2003) (0)
- New Combinations in Mesoamerican Oncidiinae (Orchidaceae) (2016) (0)
- A new and attractive Poinsettia (Euphorbiaceae) from Guerrero (Mexico). (1975) (0)
- Orchids of the Americas. (1974) (0)
- The relationships of meiracyllium (Orchidaceae) (1960) (0)
- Acenaphthene Chemistry. VIII.1,2 The Oxidation of 5-Benzenesulfonamido-acenaphthene with Lead Tetraacetate. Two New Acenaphthene Compounds with Imidol Structures (1965) (0)
- Encyclia altissima Schlechter (Orchidaceae), a resurrected name for the Bahama Flora (1993) (0)
- Some Derivatives of Ethylbenzene and Tetralin. (1964) (0)
- TAXONOMIC REVIEW OF THE WARCZEWICZELLA RCHB.F. GENUS(ORCHIDACEAE: MAXILARIEAE ) IN COLOMBIA (2011) (0)
- Additions and Corrections-Structure and Stereochemistry of Diels-Alder Adducts of Levopimaric Acid (1965) (0)
- Jacquiniella gigantea (orchidaceae : laeliinae), a new species from Mexico (1992) (0)
- Regular ArticleComparative vegetative anatomy and systematics of Spiranthoideae (Orchidaceae) (1993) (0)
- Validation of four Malaxis species (Orchidaceae) (2016) (0)
- Acrorchis, a new genus from the mountains of panama and costa rica (1990) (0)
- A Sectional Classification of Trichopilia Lindley (Orchidaceae) (2006) (0)
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