Zobrazeno 1 - 10
of 62
pro vyhledávání: '"Lowell E. Urbatsch"'
Autor:
Yalma L. Vargas-Rodriguez, Marisa Blake Szubryt, David F. Barfknecht, Lowell E. Urbatsch, Kurt M. Neubig
Publikováno v:
Systematic Botany. 45:658-667
—The number and identity of species within Euthamia (Asteraceae, Astereae) have varied considerably among taxonomic treatments. Euthamia graminifolia (L.) Nutt. is often treated broadly, including plants from the northern and eastern United States
Publikováno v:
Southeastern Naturalist. 17:N56-N59
There were a total of 12 documented Panax quinquefolius (American Ginseng) in the only known population in Louisiana in 1986. Our reassessment of the population in 2016 found 16 plants. We suggest that the long-term persistence of this tiny American
Autor:
Vinson P. Doyle, Yalma L. Vargas-Rodriguez, J. Richard Carter, Annonim, Christopher S. Reid, Lowell E. Urbatsch
Publikováno v:
Plant Ecology and Evolution. 150:343-357
Background and aims Cyperus is a large, ecologically diverse, and important sedge genus. Recent systematic work resolved problems with generic delimitation and implicated C4 photosynthesis as a possi
Publikováno v:
The Journal of the Torrey Botanical Society. 147:49
The understanding of the species traits of Acer L. growing in subtropical and tropical America is relevant because this region represents its most southern geographic range in the hemisphere. This study evaluates the morphological variation and updat
Autor:
Paul E. Berry, Ricarda Riina, Jess A. Peirson, Carolyn J. Ferguson, Lowell E. Urbatsch, Mark H. Mayfield
Publikováno v:
Botanical Journal of the Linnean Society. 175:191-228
The 480 species of leafy spurges, Euphorbia subgenus Esula, represent the main temperate radiation in the large genus Euphorbia. This group is distributed primarily in temperate Eurasia, but with smaller, disjunct centres of diversity in the mountain
Publikováno v:
Brittonia. 66:292-305
We analyzed nuclear ITS sequences of 95 samples representing 85 taxa of Cyperus sensu lato under maximum likelihood and Bayesian frameworks. This work is exploratory in nature with the objectives of gaining insight into relationships among New World
Publikováno v:
Castanea. 84:259
Chevreulia acuminata is reported for the first time in North America from recent collections in the southeastern United States. Populations from Lee County, Alabama, and one in Troup County, Georgia, were found growing in lawns or grassy areas along
Autor:
Lowell E. Urbatsch
Publikováno v:
Castanea. 84:267
Purple loosestrife (Lythrum salicaria) is documented for the first time for Louisiana in Plaquemines Parish, extending its range southward about 310 km. Three species of Lythrum are now known for Louisiana, and four species have been recorded for the
Publikováno v:
Castanea. 78:330-337
Youngia thunbergiana is documented for North America from Alabama, Georgia, Maryland, Virginia, and South Carolina. Lloyd Shinners in 1964 reported this species for the District of Columbia and North Carolina, a fact apparently overlooked by subseque
Publikováno v:
Kew Bulletin. 64:645-660
The African genus Welwitschiella has traditionally been placed in tribe Heliantheae. Our phylogenetic analysis of chloroplast DNA ndhF sequence data, however, reveals that it is part of tribe Astereae. In order to assess the relationships of this gen