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Displaying 21 - 30 from the 98 total records
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Polynesian Plant Studies 1-5
F. Raymond Fosberg and Marie-Hélène Sachet
25 pages
1975 (Date of Issue: 21 July 1975)
Number 21, Smithsonian Contributions to Botany
DOI: 10.5479/si.0081024X.21
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Abstract

Systematic, nomenclatural, and distributional observations on various genera of Polynesian vascular plants, both indigenous and exotic, with new species, varieties, and nomenclatural combinations in Myrsine, Geniostoma, and Ipomoea. The island groups on which the plants occur are the Hawaiian, Marquesan, Society, Tuamotu, Austral, Cook, Fiji, and Tonga islands.


Vascular Flora of the Northern Marianas Islands
F. Raymond Fosberg, M. V. C. Falanruw and Marie-Hélène Sachet
45 pages, 2 figures
1975 (Date of Issue: 23 June 1975)
Number 22, Smithsonian Contributions to Botany
DOI: 10.5479/si.0081024X.22
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A systematic catalog of the vascular plants known from the northern 10 islands in the Marianas Archipelago in Micronesia, with a short geographical introduction and, for each species, ecological and geographic data and specimen citations, or, where these are unavailable, citations of literature records.


Flora of the Marquesas, 1: Ericaceae-Convolvulacae
Marie-Hélène Sachet
34 pages, 1 figure
1975 (Date of Issue: 2 October 1975)
Number 23, Smithsonian Contributions to Botany
DOI: 10.5479/si.0081024X.23
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This is the first installment of a vascular Flora of the Marquesas Islands (French Polynesia). It contains floristic taxonomic treatments, keys, synonymy, descriptions, distribution, ethnobotany including uses and vernacular names, citations of geographic records, and herbarium specimens of the families Ericaceae, Epacridaceae, Myrsinaceae, Primulaceae, Plumbaginaceae, Sapotaceae, Oleaceae, Loganiaceae, Gentianaceae, Apocynaceae, Asclepiadaceae, and Convolvulaceae. A brief introduction outlines the history of the botany of the Marquesas, the materials on which the flora is based, problems in interpreting and using some of the collections, the climatic and geographic setting of the Marquesan Archipelago, and acknowledgments. Other families will follow in future installments as they are completed.


Flora of Micronesia, 2: Casuarinaceae, Piperaceae, and Myricaceae
F. Raymond Fosberg and Marie-Hélène Sachet
28 pages, 1 figure
1975 (Date of Issue: 18 September 1975)
Number 24, Smithsonian Contributions to Botany
DOI: 10.5479/si.0081024X.24
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The second installment of the Flora of Micronesia gives systematic treatments, including descriptions, synonymy, pertinent literature references, keys, ethnobotany, citations, geographic records, and specimens examined, of the families Casuarinaceae, Piperaceae, and Myricaceae.


A Revision of the Lichen Genus Hypotrachyna (Parmeliaceae) in Tropical America
Mason E. Hale, Jr.
73 pages, 20 figures, 1 table
1975 (Date of Issue: 13 August 1975)
Number 25, Smithsonian Contributions to Botany
DOI: 10.5479/si.0081024X.25
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A revision is made for 77 species of Hypotrachyna occurring in tropical America. Fifty-eight of these are endemic to the New World. These species are classified loosely in chemical constellations based on the secondary depside-depsidone products. The possible role of hybridization of fertile species and the evolution of vegetative morphs are discussed. Five new species are described: H. andensis, H. lopezii, H. partita, H. producta, and H. protenta. The remaining 72 species are transferred from the genus Parmelia to Hypotrachyna.


A Monograph of the Lichen Genus Relicina (Parmeliaceae)
Mason E. Hale, Jr.
32 pages, 16 figures
1975 (Date of Issue: 13 August 1975)
Number 26, Smithsonian Contributions to Botany
DOI: 10.5479/si.0081024X.26
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A revision is made for 77 species of Hypotrachyna occurring in tropical America. Fifty-eight of these are endemic to the New World. These species are classified loosely in chemical constellations based on the secondary depside-depsidone products. The possible role of hybridization of fertile species and the evolution of vegetative morphs are discussed. Five new species are described: H. andensis, H. lopezii, H. partita, H. producta, and H. protenta. The remaining 72 species are transferred from the genus Parmelia to Hypotrachyna.

A revision on the world level is made for Relicina, a generic segregate of Parmelia characterized by having bulbate cilia on the lobe margins and by producing usnic acid in the cortex. Of the 24 species presently known, 19 occur in the Old World tropics, with the greatest concentration in the lowland dipterocarp forests, 3 are endemic to the New World tropics, and 2 occur in both the New and Old World outside of Africa. The most important taxonomic characters are type of rhizine (simple or branched), presence of coronate apothecia, isidia, and chemistry. The major chemical constituents are echinocarpic acid, fumarprotocetraric acid, and protocetraric acid. The genus is considered to be of fairly recent origin but rather conservative in terms of morphological and chemical evolution. Four new species, R. amphithrix, R. incongrua, R. precircumnodata, and R. subconnivens, are described and one new combination, R. relicinula (Müller Argau) Hale, is made.


The Mosses of Juan Fernandez Islands
Harold Robinson
88 pages
1975 (Date of Issue: 1 December 1975)
Number 27, Smithsonian Contributions to Botany
DOI: 10.5479/si.0081024X.27
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Keys and descriptions are presented for the mosses of Juan Fernandez Islands. A total of 129 species are recognized in 73 genera and 32 families. Thirty-three of the species (about 25 percent) are endemic. Four new combinations are provided: Amphidium tortuosum, Calyptrochaeta grandiretis, C. leptoloma, and Diplostichum jamesonii.


A Monograph of the Genus Eperua (Leguminosae: Caesalpinioideae)
Richard S. Cowan
45 pages, 13 figures, 2 tables
1975 (Date of Issue: 4 September 1975)
Number 28, Smithsonian Contributions to Botany
DOI: 10.5479/si.0081024X.28
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All available data are brought together in a monographic treatment of the legume genus Eperua. Eighteen taxa are considered of which four are described as new: E. duckeana, E. obtusata, E. grandiflora ssp. guyanensis, and E. jenmanii ssp. sandwithii. Also one new combination is made: E. glabriflora (Ducke) Cowan. In addition to gross morphology, anatomy of leaf epidermis and palynology of most of the species are presented for the first time. Pollen morphology is particularly instructive with respect to the classification derived principally from vegetative and floral morphology.


A Study of the Tribe Gesnerieae, with a Revision of Gesneria (Gesneriaceae: Gesnerioideae)
Laurence E. Skog
182 pages, 86 figures, 9 tables
1976 (Date of Issue: 3 May 1976)
Number 29, Smithsonian Contributions to Botany
DOI: 10.5479/si.0081024X.29
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A study is made of the tribe Gesnerieae of the family Gesneriaceae from the West Indies, giving information on history, anatomy and morphology, pollination and dispersal, and hybridization in the tribe. The tribe comprises 67 species in 3 genera: Rhytidophyllum, Gesneria, and Pheidonocarpa. The last genus is described as new, with a new species combination, Pheidonocarpa corymbosa (Swartz) L. Skog, and 2 subspecies. A revision of Gesneria Linnaeus is presented based on field and herbarium studies. Gesneria is divided into 9 sections, 46 species (a new species, Gesneria onychocalyx L. Skog, is described), 12 subspecies, and 11 varieties. The taxonomic portion includes keys, synonymies, descriptions, typifications, distributions, and ecology, as well as distribution maps and illustrations of the taxa. Also enumerated in Appendix 1 are many species names once included in Gesnera or Gesneria, but which have been transferred to other genera. Two new combinations are made in this portion of the text: Rhytidophyllum cumanense (Hanstein) L. Skog and Rhytidophyllum onacaense (Rusby) L. Skog.


A Revision of American Velloziaceae
Lyman B. Smith and Edward S. Ayensu
172 pages, 53 figures, 37 plates
1976 (Date of Issue: 3 August 1976)
Number 30, Smithsonian Contributions to Botany
DOI: 10.5479/si.0081024X.30
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With the aid of leaf anatomy, the systematics of 4 genera and 229 species of the American Velloziaceae is brought up to date. The sclerenchyma patterns and other anatomical characters that proved diagnostically important in earlier studies, continue to be most useful in delimiting the major genera and species in the present study. An introduction summarizing the major problems yet unravelled in this family and the current and prospective means for solving such problems, are discussed. Taxonomic keys, synonyms, and information on species distribution are included in this revision. Descriptions of new species and of higher taxa are also provided.


Displaying 21 - 30 from the 98 total records