The Solidago rigida complex (Compositae: Astereae): a multivariate morphometric analysis and chromosome numbers

1988 ◽  
Vol 66 (9) ◽  
pp. 1800-1807 ◽  
Author(s):  
Stephen B. Heard ◽  
John C. Semple
Keyword(s):  
United States ◽  
Southeastern United States ◽  
Corolla Lobe ◽  
Morphometric Study ◽  
Herbarium Specimens ◽  
New Combinations ◽  
Northeastern United States ◽  
Chromosome Counts ◽  
Disc Corolla ◽  
Morphological Differences

A multivariate morphometric study of herbarium specimens of Solidago rigida confirmed that the species was divisible into three groups: a prairie race, a southeastern United States race, and a mid western – northeastern United States race. These groups are given subspecific rank as ssp. humilis, ssp. glabrata, and ssp. rigida, respectively, on the basis of morphological differences and their largely allopatric distributions. They are most easily distinguished on the basis of pubescence, phyllary, and disc corolla lobe traits. Twenty-seven new chromosome counts in two of the three subspecies are reported. Subspecies humilis is diploid (2n = 18); ssp. rigida is diploid in Oklahoma and tetraploid (2n = 36) over most of its range. Subspecies glabrata has been reported previously as diploid (four counts). The following new combinations are made: Solidago rigida ssp. glabrata and S. rigida ssp. humilis.

New Combinations for Panicum Subgenus Panicum and Subgenus Dichanthelium (Poaceae) of the Southeastern United States

Brittonia ◽  
1984 ◽  
Vol 36 (3) ◽  
pp. 262 ◽  
Author(s):  
Michel G. Lelong
Keyword(s):  
United States ◽  
Southeastern United States ◽  
New Combinations

Morphological differences in Macoma balthica (Bivalvia, Tellinacea) from a Dutch and three southeastern United States estuaries

1999 ◽  
Vol 41 (3) ◽  
pp. 213-224 ◽  
Author(s):  
Pauline Kamermans ◽  
Henk W. Van der Veer ◽  
Johannes IJ. Witte ◽  
Ewout J. Adriaans
Keyword(s):  
United States ◽  
Southeastern United States ◽  
Macoma Balthica ◽  
Morphological Differences

Distribution of an Invasive Weevil, Pseudocneorhinus bifasciatus Roelofs, in the Southeastern United States

2005 ◽  
Vol 40 (1) ◽  
pp. 25-30 ◽  
Author(s):  
A. G. Wheeler ◽  
David W. Boyd
Keyword(s):  
United States ◽  
North Carolina ◽  
South Carolina ◽  
North America ◽  
Southeastern United States ◽  
Ornamental Plants ◽  
Review Of The Literature ◽  
Northeastern United States

The twobanded Japanese weevil, Pseudocneorhinus bifasciatus Roelofs, first found in North America near Philadelphia, PA, in 1914, is better known in the northeastern United States than in the Southeast. Based on examination of specimens in 11 museums, fieldwork, and review of the literature, we document the presence of this pest of ornamental plants in Alabama (3 counties), Georgia (12), North Carolina (16), and South Carolina (19). The southeastern distribution is mapped, and locality and date are provided for the first collection in each state: North Carolina, 1955; Georgia, 1956; South Carolina, 1966; and Alabama, 1970.

scholarly journals New combinations, rank changes, and nomenclatural and taxonomic comments in the vascular flora of the southeastern United States, III

2018 ◽  
Vol 12 (1) ◽  
pp. 27-67
Author(s):  
Alan S. Weakley ◽  
Derick B. Poindexter ◽  
Richard J. LeBlond ◽  
Bruce A. Sorrie ◽  
Edwin L. Bridges ◽  
...  
Keyword(s):  
United States ◽  
Southeastern United States ◽  
Point Of View ◽  
New Combinations ◽  
Vascular Flora ◽  
Taxonomic Changes

As part of ongoing efforts to understand and document the flora of the southeastern United States, a number of taxonomic changes at generic, specific, and infraspecific rank are made. We also discuss and clarify the recommended taxonomy for other taxa (not requiring nomenclatural acts) and present a point of view about the practical and philosophic basis for making taxonomic changes in an allegedly well-understood flora. The genera (and families) affected are Endodeca (Aristolochiaceae), Erigeron, Pityopsis, and Solidago (Asteraceae), Tillandsia (Bromeliaceae), Carex (Cyperaceae), Baptisia and Indigofera (Fabaceae), Salvia and Scutellaria (Lamiaceae), Stenanthium (Melanthiaceae), Epidendrum (Orchidaceae), and Andropogon, Coleataenia, Dichanthelium, Digitaria, and Panicum (Poaceae).

scholarly journals Studies in the vascular flora of the southeastern United States: V

2019 ◽  
Vol 13 (1) ◽  
pp. 107-129
Author(s):  
Alan S. Weakley ◽  
R. Kevan Schoonover McClelland ◽  
Richard J. LeBlond ◽  
Keith A. Bradley ◽  
James F. Matthews ◽  
...  
Keyword(s):  
United States ◽  
New Species ◽  
Conservation Status ◽  
Southeastern United States ◽  
New Combinations ◽  
Vascular Flora ◽  
The North ◽  
Taxonomic Changes ◽  
Southern Florida ◽  
A New Species

As part of ongoing efforts to understand and document the flora of the southeastern United States, we propose a number of taxonomic changes. In Trichostema, we name a new species, narrowly endemic to maritime grasslands in the Carolinas and warranting formal conservation status and action. In Dichanthelium (Poaceae), we continue the reassessment of taxa formerly recognized in Panicum and provide new combinations along with a new key to taxa in the Dichanthelium scabriusculum complex. In Paspalum (Poaceae), we address the controversial taxonomy of P. arundinaceum and P. pleostachyum and treat the two as conspecific, with P. arundinaceum the correct name. In Portulaca (Portulacaceae), we report the discovery of the Bahamian P. minuta as a native component of the North American flora, occurring in southern Florida.

scholarly journals New combinations, rank changes, and nomenclatural and taxonomic comments in the vascular flora of the southeastern United States. II

2017 ◽  
Vol 11 (2) ◽  
pp. 291-325
Author(s):  
Alan S. Weakley ◽  
Derick B. Poindexter ◽  
Richard J. LeBlond ◽  
Bruce A. Sorrie ◽  
Cassandra H Karlsson ◽  
...  
Keyword(s):  
United States ◽  
Southeastern United States ◽  
Point Of View ◽  
New Combinations ◽  
Vascular Flora ◽  
Taxonomic Changes

As part of ongoing efforts to understand and document the flora of the southeastern United States, a number of taxonomic changes at generic, specific, and infraspecific rank are made. We also discuss and clarify the recommended taxonomy for other taxa (not requiring nomenclatural acts) and present a point of view about the practical and philosophic basis for making taxonomic changes in an allegedly well-understood flora. The genera (and families) affected are Allium (Alliaceae), Erigeron, Liatris, and Trilisa (Asteraceae), Calycanthus (Calycanthaceae), Gaylussacia (Ericaceae), Dalea and Mimosa (Fabaceae), Hydrophyllum (Hydrophyllaceae), Didymoglossum (Hymenophyllaceae), Monarda (Lamiaceae), Kosteletzkya and Sida (Malvaceae), Narthecium (Nartheciaceae), Agalinis, Melampyrum, and Orobanche/Aphyllon/Myzorrhiza (Orobanchaceae), Dichanthelium and Elymus (Poaceae), Clematis (Ranunculaceae), and Maianthemum (Ruscaceae).

Variation in the mitochondrial DNA of the Sylvilagus complex occupying the northeastern United States

1997 ◽  
Vol 75 (4) ◽  
pp. 595-605 ◽  
Author(s):  
Marianne K. Litvaitis ◽  
Woo-Jai Lee ◽  
John A. Litvaitis ◽  
Thomas D. Kocher
Keyword(s):  
United States ◽  
Mitochondrial Dna ◽  
New England ◽  
Sister Species ◽  
Sequence Information ◽  
Sylvilagus Floridanus ◽  
Northeastern United States ◽  
New England Cottontail ◽  
Declining Populations ◽  
Morphological Differences

We compared the variation in mitochondrial DNA among species of cottontail rabbits in the northeastern United States to (i) assess the effects of historic transplants of eastern cottontails (Sylvilagus floridanus) on subspecific status, (ii) examine the extent of hybridization between invading eastern cottontails and declining populations of endemic New England cottontails (S. transitionalis), and (iii) evaluate the recent reclassification of S. transitionalis into two sister-species, New England cottontail and Appalachian cottontail (S. obscurus). Sequence variation in the tRNAPro and the first 310 base pairs of the control region supported a separation of the two species S. floridanus and S. transitionalis/S. obscurus. However, geographic structuring of haplotypes was not detected for either group. Genetic similarity among populations of S. floridanus indicated that subspecific designations are not warranted for this species in the northeastern United States. Comparisons of sequence information from populations of S. transitionalis/S. obscurus that were never sympatric (Maine), recently sympatric (New Hampshire), or sympatric with eastern cottontails since the last glaciation of eastern North America (Virginia, West Virginia, Maryland, North Carolina) indicated that hybridization is not occurring between eastern cottontails and New England or Appalachian cottontails. Limited variation in mitochondrial DNA does not support the recent reclassification of S. transitionalis into sister-species. However, karyotypic and morphological differences between northern and southern populations should be considered during any efforts to restore declining populations of this species.

A multivariate morphometric analysis of Solidago subsect. Glomeruliflorae (Asteraceae: Astereae)

Botany ◽  
2009 ◽  
Vol 87 (1) ◽  
pp. 97-111 ◽  
Author(s):  
Rachel E. Cook ◽  
John C. Semple ◽  
Bernard R. Baum
Keyword(s):  
Morphometric Analysis ◽  
A Priori ◽  
Species Level ◽  
Morphometric Study ◽  
Herbarium Specimens ◽  
Type Specimens ◽  
P Values ◽  
Statistical Support ◽  
Discriminant Analyses ◽  
Morphological Differences

A multivariate morphometric study of Solidago subsection Glomeruliflorae (Torr. & A. Gray) Nesom was undertaken on a matrix of 45 characters by 368 plants to assess the morphological differences among the members of the complex and to determine their appropriate taxonomic ranks. The numbers of a priori groups tested were based on taxa recognized in floristic literature, examination of type specimens and 3214 herbarium specimens, and observations of plants in the field and greenhouse. Analyses were performed to determine statistical support for eight a priori species level groups: Solidago albopilosa E.L. Braun, Solidago caesia  L., Solidago curtisii Torr. & A. Gray, Solidago flexicaulis L., Solidago glomerata Michx., Solidago lancifolia (Torr. & A. Gray) Chapm., Solidago macrophylla  Pursh, and Solidago ouachitensis C.E.S Taylor & R.J. Taylor. Additional analyses were preformed to determine statistical support for varietal level a priori groups within S. caesia and S. curtisii. Statistical support for recognizing all 10 a priori groups varied, although in all analyses, the P values were always well below α of 0.05. Based on the results of the discriminant analyses, the following taxa are recognized: S. albopilosa, S. caesia var. caesia , S. caesia var. zedia , S. curtisii var. curtisii , S. curtisii var. flaccidifolia , S. flexicaulis, S. glomerata, S. lancifolia, S. macrophylla, and S. ouachitensis.

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