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Displaying 31 - 40 from the 98 total records
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A Monograph of the Lichen Genus Bulbothrix Hale (Parmeliaceae)
Mason E. Hale, Jr.
29 pages, 7 figures
1976 (Date of Issue: 31 August 1976)
Number 32, Smithsonian Contributions to Botany
DOI: 10.5479/si.0081024X.32
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Abstract

A world-level revision is given for the 29 species of Bulbothrix, a generic segregate of Parmelia characterized by marginal bulbate cilia and production of atranorin in the upper cortex. The genus is primarily tropical in distribution and best developed in secondary forests. The main center of speciation is Brazil with 14 species, and the genus is also well represented in Africa. The New World species have a high frequency of depsides and orcinol depsidones, whereas the Old World species usually contain β-orcinol depsidones. One new species, B. klementii Hale, and one new combination, B. goebelii (Zenker) Hale, are proposed.


A Monograph of the Lichen Genus Pseudoparmelia Lynge (Parmeliaceae)
Mason E. Hale, Jr.
62 pages, 18 figures
1976 (Date of Issue: 3 September 1976)
Number 31, Smithsonian Contributions to Botany
DOI: 10.5479/si.0081024X.31
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A world monograph of the genus Pseudoparmelia is presented. There are 76 species, most occurring in dry subtemperate to tropical areas and especially concentrated in the arid scrub lands of South Africa, Australia, and Brazil. The genus is characterized by an unusually high number of species with divaricatic acid and related orcinol depsides. The following new species are described: P. callichroa Kurokawa, P. concomitans Hale, P. conlabrosa Hale, P. dahlii Hale, P. neoquintaria Hale, P. subambigua Hale, P. subamplexa Hale, and P. venezolana Hale. The following new combinations are made: P. corrugativa (Kurokawa and Filson) Hale, P. exornata (Zahlbruckner) Hale, P. gerlachei (Zahlbruckner) Hale, P. papillosa (Lynge ex Gyelnik) Hale, P. rodriguesiana (Hue) Hale, P. schistacea (Kurokawa and Filson) Hale, P. scotophylla (Kurokawa) Hale, and P. spodochroa (Kurokawa and Filson) Hale.


The Genus Colpomenia Derbès et Solier (Phaeophyta) in the Gulf of California
Michael J. Wynne and James N. Norris
18 pages, 11 figures
1976 (Date of Issue: 9 September 1976)
Number 35, Smithsonian Contributions to Botany
DOI: 10.5479/si.0081024X.35
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Abstract

Four species of the brown algal genus Colpomenia Derbès et Solier (Scytosiphonales) are recognized as occurring within the Gulf of California: C. sinuosa (Roth) Derbès et Solier, C. tuberculata Saunders, C. ramosa Taylor, and C. phaeodactyla, new species. Some of the specimens interpreted by Dawson (1944) as Rosenvingea intricata are now referred to C. ramosa Taylor. Although recorded from the Pacific coast of Baja California, C. ramosa has not yet been reported within the Gulf. Interrelationships of the species complex of Colpomenia with related genera such as Iyengaria Boergesen, Rosenvingea Boergesen, and Scytosiphon C. Agardh are discussed.


New Records of Marine Algae from the 1974 R/V Dolphin Cruise to the Gulf of California
James N. Norris and Katina E. Bucher
22 pages, 13 figures
1976 (Date of Issue: 28 September 1976)
Number 34, Smithsonian Contributions to Botany
DOI: 10.5479/si.0081024X.34
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Six species of benthic marine algae (one Chlorophyta, two Phaeophyta, and three Rhodophyta) are newly reported from the Gulf of California, Mexico. Species of Halicystis, Sporochnus, Bonnemaisonia, Dudresnaya, and Sebdenia represent genera new to the Gulf, with the last being new to North America. The distribution of twelve other species is extended. Two new nomenclatural combinations, Dasya baillouviana var. nudicaulus and Dasya baillouviana var. stanfordiana, are proposed. The morphological variation of some species is discussed. Spermatangia of Dudresnaya colombiana, and tetrasporangia and spermatangia of Kallymenia pertusa are reported and described for the first time.


A Monograph of the Lichen Genus Parmelina Hale (Parmeliaceae)
Mason E. Hale, Jr.
60 pages, 21 figures
1976 (Date of Issue: 22 October 1976)
Number 33, Smithsonian Contributions to Botany
DOI: 10.5479/si.0081024X.33
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Abstract

The 47 species of Parmelina are revised on the world level. Two sections are recognized: section Parmelina with 30 species widely distributed in temperate to tropical montane regions and section Myelochroa with 17 terpene-containing species concentrated in eastern and southern Asia. The genus is most closely related to Parmotrema Massalongo. Five new species, P. crassata Hale, P. degelii Hale, P. indica Hale, P. rhytidodes Hale, and P. schindleri Hale, are described, and six new combinations proposed, P. amagiensis (Asahina) Hale, P. damaziana (Zahlbruckner) Hale, P. endoleuca (Taylor) Hale, P. irrugans (Nylander) Hale, P. jamesii (Hale) Hale, and P. pastillifera (Harmand) Hale. New combinations are also made for Hypotrachyna baguioensis (Hale) Hale and Parmotrema nylanderi (Lynge) Hale.


Flora of Micronesia, 3: Convolvulaceae
F. Raymond Fosberg and Marie-Hélène Sachet
34 pages, 1 figure
1977 (Date of Issue: 2 February 1977)
Number 36, Smithsonian Contributions to Botany
DOI: 10.5479/si.0081024X.36
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Abstract

The third installment of the Flora of Micronesia includes a brief introduction with acknowledgments and references to the previously published parts of the flora. A floristic taxonomic account of the Convolvulaceae of Micronesia is given, with descriptions, keys, synonymy, ethnobotany (including vernacular names and uses), and citations of geographic records and herbarium specimens.


Pollen Morphology and the Relationship of the Plumbaginaceae, Polygonaceae, and Primulaceae to the Order Centrospermae
Joan W. Nowicke and John J. Skvarla
64 pages, 200 figures, 5 tables
1977 (Date of Issue: 18 August 1977)
Number 37, Smithsonian Contributions to Botany
DOI: 10.5479/si.0081024X.37
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Abstract

Three families, Plumbaginaceae, Polygonaceae, and Primulaceae, are considered to be related to or derived from the Order Centrospermae by various authors. These three families have anthocyanin pigments in contrast to the betalains found in all but two families in the Centrospermae. In addition, all three are known to have starch-type sieve-tube plastids in contrast to the protein type found in all centrospermous families. Examination of the pollen of 134 species by SEM, TEM, and light microscopy revealed great diversity, especially in the Polygonaceae, but not the spinulose and tubuliferous/punctate ektexine, which characterizes the vast majority of the centrospermous taxa. Recent evidence argues against a close relationship of the Plumbaginaceae, Polygonaceae, and Primulaceae with the Centrospermae, and the absence of any pollen types common to the three families further suggests that they are not closely related to each other.


A Revision of the Lichen Family Thelotremataceae in Panama
Mason E. Hale, Jr.
60 pages, 15 figures
1978 (Date of Issue: 1 May 1978)
Number 38, Smithsonian Contributions to Botany
DOI: 10.5479/si.0081024X.38
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The genus Boerhavia is discussed, its infrageneric classification is reviewed, and four sub-genera are recognized. Distinctions of two Linnaean species, B. diffusa and B. repens are clarified. Boerhavia mutabilis R. Brown and B. pubescens R. Brown are typified. The Boerhavia repens group is discussed and delimited, as is B. rubicunda and several similar species. Boerhavia repens var. maris-indici, B. albiflora, B. crispifolia, and B. herbstii are described as new. A curious abnormal form of B. crispifolia is also described and discussed.


Studies in the Genus Boerhavia L. (Nyctaginaceae), 1–5
F. Raymond Fosberg
20 pages
1978 (Date of Issue: 12 May 1978)
Number 39, Smithsonian Contributions to Botany
DOI: 10.5479/si.0081024X.39
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Abstract

The genus Boerhavia is discussed, its infrageneric classification is reviewed, and four sub-genera are recognized. Distinctions of two Linnaean species, B. diffusa and B. repens are clarified. Boerhavia mutabilis R. Brown and B. pubescens R. Brown are typified. The Boerhavia repens group is discussed and delimited, as is B. rubicunda and several similar species. Boerhavia repens var. maris-indici, B. albiflora, B. crispifolia, and B. herbstii are described as new. A curious abnormal form of B. crispifolia is also described and discussed.


Morden-Smithsonian Expedition to Dominica: The Lichens (Graphidaceae)
Michael Wirth and Mason E. Hale, Jr.
64 pages, 12 figures, 11 plates
1978 (Date of Issue: 26 October 1978)
Number 40, Smithsonian Contributions to Botany
DOI: 10.5479/si.0081024X.40
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Abstract

The four main genera of the Graphidaceae in Dominica, Graphis (27 species), Phaeographis (7 species), Graphina (25 species), and Phaeographina (6 species), are treated monographically with full synonymy, descriptions, chemistry, and illustrations. The family as a whole is common in all primary and secondary forests and at all elevations. Eight new species are described: Graphis imshaugii, G. isidiifera, Phaeographis mordenii, Graphina carneoviridis, G. suberythrella, G. triphoroides, Phaeographina atrovermicularis, and P. coriaria. Three new combinations, Graphina columbina (Tuckerman) Wirth and Hale, G. illinata (Eschweiler) Wirth and Hale, and G. plurispora (Redinger) Wirth and Hale, are also made.


Displaying 31 - 40 from the 98 total records