David Lorence

David Lorence
The National Tropical Botanical Garden · Science and Conservation

PhD

About

197
Publications
33,308
Reads
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2,121
Citations
Introduction
David Lorence currently works at the Science & Conservation, National Tropical Botanical Garden. David does research in Biology and Botany. Their current project is 'Vascular Flora of the Marquesas Islands'.
Additional affiliations
August 2019 - present
The National Tropical Botanical Garden
The National Tropical Botanical Garden
Position
  • Senior Researcher
March 1987 - August 2019
The National Tropical Botanical Garden
The National Tropical Botanical Garden
Position
  • Managing Director
October 1980 - January 1987
Universidad Nacional Autónoma de México
Position
  • Investigaor Titular A, B

Publications

Publications (197)
Article
Full-text available
The International Union for Conservation of Nature's Red List of Threatened Species (IUCN Red List) is the world's most comprehensive information source on the global conservation status of species. Countries, governmental agencies, and conservation organizations increasingly rely on IUCN Red List assessments to develop conservation policies and pr...
Chapter
Kadua haupuensis is an extremely rare member of the Rubiaceae family that is endemic to lowland mesic forests on the north face of Mt. Hāʻupu, Kauaʻi. This species was discovered in 1998 along the base of a cliff on Mt. Hāʻupu. The only known population was observed in lowland mesic forest at 1200 ft (367 m) elevation. The population consisted of s...
Article
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While undertaking a botanical survey of the Andersen Air Force Base on Guam (Mariana Islands) in 1994, botanists from the National Tropical Botanical Garden collected an unusual suffrutescent, non-aromatic member of the Lamiaceae family growing on limestone cliffs in the northeastern part of the island. Based on morphology and molecular data (trnLF...
Article
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The genus Bidens (Compositae) comprises c. 230 species distributed across five continents, with the 41 Polynesian species displaying the greatest eco‐morphological variation in the group. However, the genus has had a long and complicated taxonomic history, and its phylogenetic and biogeographic history are poorly understood. In order to resolve the...
Book
The Marquesas Islands are a volcanic archipelago of 12 islands and numerous islets situated within the eastern part of French Polynesia, making it one of the most isolated groups of oceanic islands. The Flora of the Marquesas Islands is a complete account of all of the plants found in the Marquesas Islands. Of the total 826 vascular plant species r...
Article
Kahanu Garden and Preserve, located in Hana on the Hawaiian Island of Maui, is part of the National Tropical Botanical Garden (NTBG). The remote Kahanu Garden and Preserve focuses on conservation of Polynesian-introduced and native Hawaiian plant species, including Pritchardia arecina Becc., a species of the only palm genus native to the Hawaiian I...
Book
Full-text available
A project spanning over three decades has come to fruition with the publication of Volume 1 of the Flora of the Marquesas Islands authored by David H. Lorence (NTBG) and Warren L. Wagner (Smithsonian Institution). The Flora of the Marquesas Islands is a complete account of all of the flowering plants found in the Marquesas Islands. This collaborati...
Article
An annotated checklist of fourteen known Syzygium species from Micronesia with information on distribution, ecology and consulted specimens. Two new species are described, Syzygium guamense and Syzygium mesekerrak, one new synonym is made for species occurring in the region and S.nitidum is lectotypified. A key to all species and two plates with le...
Article
Premise of research. This is the first comparative study of inflorescence morphology through all seven families of the order Laurales (Atherospermataceae, Calycanthaceae, Gomortegaceae, Hernandiaceae, Lauraceae, Monimiaceae, and Siparunaceae) and the larger subclades of these families. Methodology. We studied 89 species of 39 genera from herbarium...
Article
A taxonomic study of the Hymenasplenium unilaterale subclade (Aspleniaceae) is presented based on morphological and molecular evidence. Twelve species are recognized, nine of which are described as new. The nine new species include H. kinabaluense, H. solomonense, H. madagascariense, H. nigricostatum, H. neocaledonicum, H. oligosorum, H. queensland...
Article
We document substantial and critical differences between the two populations of the fascinating genus Paladoxa, establish the validity and resurrect the name of a second species from synonymy, discuss molecular data, phylogeny and phytogeography, ethnobotany and conservation and what impact, if any, they might have had in its speciation and insular...
Article
Full-text available
Understanding the reproductive biology of rare plant species is fundamental to managing their restoration. Brighamia insignis is a critically endangered Hawaiian lobeliad endemic to the islands of Kauaʻi and Niʻihau. The flowers appear to be adapted for moth pollination although its putative pollinator is believed to be extinct or very rare. To con...
Article
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Perrottetiawichmaniorum Lorence & W. L. Wagner, sp. nov . is described as endemic to Kaua‘i. It differs from its Hawaiian congener P.sandwicensis by its larger, thicker, more densely hirtellous-villosulous rugose leaves with a smaller length:width ratio [1.5–1.7:1], larger inflorescences with usually four degrees of branching with moderately to den...
Article
Arachniodes (Dryopteridaceae) is one of the most confusing and controversial fern genera in terms of its circumscription, nomenclature, and taxonomy. Estimates of species number range from 40 to 200. Previous molecular works included only 2–17 accessions representing 2–12 species of Arachniodes and allied genera, leaving most of the Asian species r...
Article
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The new species Chiococcagrandiflora Lorence & T.Van Devender from Sinaloa and Sonora, Mexico differs from its congeners by its larger, showy white flowers in compact cymes of 3–9, and infundibuliform corollas 16–20 mm long with tubes 13–17 mm long and lobes 3–3.5 mm long. Its distribution, habitat, and relationships are outlined. The conservation...
Article
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The genus Psychotria L. (Rubiaceae) is one of the most diverse in the Pacific, including the islands of French Polynesia with 28 described endemic species. The Psychotria speciosa G. Forst. complex is evaluated, and P. speciosa is lectotypified and an epitype designated. The new combination Psychotria trichocalyx (Drake) Fosberg ex J.-Y. Meyer, Lor...
Article
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In this work a key is presented to assist in the identification of the 96 species (comprising 36 genera) of Rubiaceae occurring in the "Los Tuxtlas" region of Veracruz, Mexico. Some basic aspects of the geographic distribution and economic importance of the Rubiaceae are presented together with a bibliographic revision of the main taxonomic and flo...
Article
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A complex cladistic analysis of molecular and morphological data of the Monimiaceae family is carried out. The hypothetic modes of the family dispersal are reconstructed basing on the data received for the studied representatives of the Monimiaceae family from all parts of the range and available fossils data. The family supposedly originated in Af...
Chapter
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Les Marquises (Polynésie française) sont un archipel volcanique formé d'une douzaine d'îles isolées dans le Pacifique Sud, situé à environ 5 000 km du continent le plus proche. Malgré ce fort isole-ment géographique, un âge géologique relativement récent (entre 1,1 et 5,5 Ma) et une faible surface (1 050 km²) et hauteur des îles (plus haut sommet à...
Article
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Coprosma kawaikiniensis K.R. Wood, Lorence & Kiehn (Rubiaceae), a rare endemic tree from Kaua'i, Hawaiian Islands, is described and illustrated along with a previously undescribed endemic plant community, the Dubautia-Sadleria shrubland-fernland (DSSF). The new species differs from Hawai'i congeners by its combination of opposite, long, elliptic to...
Article
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Sommera cusucoana Lorence, D. Kelly & A. Dietzsch, sp. nov., (Rubiaceae), a new species from Honduras, differs from the other Mesoamerican Sommera species by the combination of large, obovate leaves with long red petioles, glabrous or glabrate intervenal areas, red stipules, lax, sparsely pubescent inflorescences with red axes, flowers with red hyp...
Article
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The lycophyte genus Selaginella alone constitutes the family Selaginellaceae, the largest of the lycophyte families. The genus is estimated to contain 700–800 species distributed on all continents except Antarctica, with highest species diversity in tropical and subtropical regions. The monophyly of Selaginella in this broad sense has rarely been d...
Article
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During the preparation of the Vascular Flora of the Marquesas Islands a new endemic species of Heliotropium L. (Boraginaceae) has come to light and is described herein: Heliotropium perlmanii Lorence & W. L. Wagner. It is known only from the island of Eiao and appears most closely related to Heliotropium marchionicum Decne., also endemic to the Mar...
Article
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Se describe e ilustra a Hoffmannia rzedowskiana Cast.-Campos, Bautista-Bello y Lorence perteneciente a la familia Rubiaceae como una nueva especie del sur de México (Chiapas, Oaxaca y Veracruz) y Nicaragua. En Veracruz se ha registrado en la región de Los Tuxtlas y en Uxpanapa cerca de los límites con los Chimalapas (Oaxaca). Esta especie muestra s...
Article
Full-text available
During the preparation of the Vascular Flora of the Marquesas Islands four new species of Bidens (Coreopsideae, Asteraceae) have come to light and are described herein: Bidens woodii W.L. Wagner, J.R. Clark & Lorence, sp. nov. from Ua Pou, and Bidens microcephala W.L. Wagner, J.R. Clark & Lorence sp. nov., Bidens evapelliana W.L. Wagner, J.R. Clark...
Article
Hoffmannia rzedowskiana Cast.-Campos, Bautista-Bello and Lorence (Rubiaceae) is described and illustrated as a new species from southern Mexico (Chiapas, Oaxaca and Veracruz) and Nicaragua. In Veracruz, it occurs in the region of Los Tuxtlas and Uxpanapa near the border with the Chimalapas (Oaxaca). This species is related to Hoffmannia discolor, f...
Article
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During the preparation of the Vascular Flora of the Marquesas Islands three new species of Cyrtandra (Gesneriaceae) have come to light and are described herein: C. uapouensis W. L. Wagner & Lorence, C. uahukaensis W. L. Wagner & Lorence, and C. kenwoodii W. L. Wagner & A. J. Wagner. Amended descriptions of the eight previously described Marquesan s...
Article
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Morphological variation of three Kaua’i species of Asplenium in the Diellia alliance is evaluated based on recent field observations and herbarium specimens. Their taxonomy, nomenclature, and synonymy are discussed, and a lectotype is selected for Lindsaya knudsenii. Asplenium diellaciniatum is interpreted as having extremely variable frond morphol...
Conference Paper
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The Consortium of Pacific Herbaria (CPH) was created to study and manage plant collections from the Polynesia-Micronesia hotspot region. The Polynesia-Micronesia Hotspot (PMH) is a center of biodiversity that harbors approximately 5,350 native vascular plant species. The CPH is a 3 year project based at UH Mānoa’s Joseph Rock Herbarium and includes...
Article
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Psychotria kosraensis Lorence & K. R. Wood (Rubiaceae, Rubioideae), a narrow endemic from Kosrae, Caroline Islands, Federated States of Micronesia (FSM), is described and illustrated. The new species differs from other known species of Psychotria L. in Micronesia by its combination of narrowly obovate-elliptic or narrowly elliptic leaves with long-...
Article
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Nypa fruticans is a mangrove palm with current natural coastal distribution in the Old World tropics and hydrochorous fruit dispersal. Nypa comprises its own monotypic subfamily in Arecaceae, with high or moderate support of its sister position to other palms excluding Calamoideae or even sister to all other palms including Calamoideae. Apocarpous...
Article
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Cyanea kauaulaensis H. Oppenheimer & Lorence, sp. nov., a new, narrowly endemic species from Maui, Hawaiian Islands is described, illustrated with field photos, and its affinities and conservation status are discussed. It is currently known from 62 mature plants and is restricted to Kaua`ula and Waikapu valleys on leeward western Maui. It differs f...
Article
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The Micronesia-Polynesia bioregion is recognized as a global biodiversity hotspot. However, until now estimates regarding the number of endemic plant species for the region were not supported by any compre- hensive published work for the region. The results of this study indicate that Micronesia has the world’s highest percentage of plant endemism...