Results 161 to 170 of about 1,068 (211)

An empirical assessment of a single family-wide hybrid capture locus set at multiple evolutionary timescales in Asteraceae. [PDF]

open access: yesAppl Plant Sci, 2019
Jones KE   +13 more
europepmc   +1 more source

Revision of the genus Clibadium (Asteraceae, Heliantheae) [PDF]

open access: possibleBrittonia, 2003
Abstract Revision of the genus Clibadium (Asteraceae, Heliantheae). Brittonia 55: 245–301. 2003.—Clibadium L. (Asteraceae, Heliantheae) is a genus of 29 species distributed throughout Latin America, from Mexico to Peru, and in the West Indies, with high numbers of species in Costa Rica, Colombia, and Ecuador.
exaly   +2 more sources

The genusBlepharispermum (Asteraceae, Heliantheae) [PDF]

open access: possiblePlant Systematics and Evolution, 1992
The palaeotropic genusBlepharispermum (Asteraceae, Heliantheae) is revised for the first time. Fifteen species from Africa, the Arabian Peninsula, Madagascar, India, and Ceylon are recognized. Two new species are described, viz.B. arcuatum andB. canescens. Aspects of the systematic position and morphology of the genus are discussed.
openaire   +1 more source

Chromosome counts inCalea (Asteraceae-Heliantheae) [PDF]

open access: possiblePlant Systematics and Evolution, 1984
Chromosome numbers are reported for six taxa ofCalea, among them tetraploidC. septuplinervia, the only known polyploid inCalea s. str. The base chromosome number ofCalea is interpreted as x = 19.
Lowell E. Urbatsch, John F. Pruski
openaire   +1 more source
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Revision of Otopappus (Compositae, Heliantheae)

Systematic Botany, 1983
Otopappus (Compositae, Heliantheae) is revised to contain 15 species from Mexico and Central America. Prominent among the taxonomic difficulties have been generic delimitations, especially with Notoptera. The principal differentia between the two genera, pappus with and without squamellae, is shown not to correlate with other features, and the two ...
Ronald L. Hartman, Tod F. Stuessy
openaire   +2 more sources

Revision of Jaegeria (Compositae-Heliantheae) [PDF]

open access: possibleBrittonia, 1968
The genusJaegeria consists of a diploid-polyploid complex of eight species found in moist habitats from Mexico to South America. The distributions, habitats, generic affinities, and tribal placement are discussed. Chromosome numbers were determined for all species exceptJ. axillaris, which is known only from Colombia.J. glabra andJ.
openaire   +1 more source

Flavonoids of Heliantheae s.l.

2001
The tribe Heliantheae is one of the largest and most morphologically variable of Asteraceae. This size and complexity has led to two different subtribal classifications in recent years (Robinson, 1981; Stuessy, 1977), which in turn have stimulated detailed morphological cladistic analyses and discussions of the entire tribe (Karis, 1993b; Karis and ...
Bruce A. Bohm, Tod F. Stuessy
openaire   +2 more sources

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