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(Vol. 04, 2001-12) Nomenclature of the Main Subdivisions of Phlox (Polemoniaceae)
The task of finding the correct names for the main subdivisions of Phlox has been beset with difficulties in interpreting the intent of older authors, particularly Asa Gray. Gray divided Phlox into four main subgroups, ...
(Vol. 04, 2001-12) Taxonomic Revision of the Genus Fendlera (Hydrangeaceae)
Fendlera is treated as having five closely related species, four of which have been recognized by previous authors, and F. tamaulipana B. L. Turner, sp. nov., a newly described taxon from northeastern Mexico. Except for ...
(Vol. 04, 2001-12) Taxonomy of Hymenoxys Subgenus Picradenia and a Conspectus of the Subgenera of Hymenoxys (Asteraceae: Helenieae: Tetraneurinae)
Hymenoxys (Helenieae, Tetraneurinae) is composed of 28 taxa distributed in 8 subgenera: 1) subg. Hymenoxys, 2) subg. Dugaldia, 3) subg. Macdougalia, 4) subg. Phileozera, 5) subg. Picradenia, 6) subg. Picradeniella, 7) subg. ...
(Vol. 04, 2001-12) A New Cryptic Species of Nemophila (Hydrophyllaceae) from Texas and the Leptotypification of N. Phacelioides Nuttall
Nemophila sayersensis, a cryptic species restricted to sandy, nutrient poor soils and sister to N. phacelioides, is described and illustrated. While examining type material of N. phacelioides and that of its synonyms, it ...
(Vol. 04, 2001-12) Revision of Ipomoea Series Tyrianthinae (Convolvulaceae)
Ipomoea series Tyrianthinae (House) D.F. Austin is revised in light of recent systematic surveys of New World morning glories. The group includes two species of vines and three highly derived shrubs. Four varieties of I. ...
(Vol. 04, 2001-12) A Guide to Understanding Recent Classifications of the Family Polemoniaceae
Two very different systems of classification of the family Polemoniaceaeone a taxonomic system and the other a molecular cladistic system-have appeared recently. They are compared and reviewed. It is emphasized that taxonomy ...
(Vol. 04, 2001-12) A New Species of Sida Sect. Ellipticifoliae (Maly Aceae)
A new species of Sida sect. Ellipticifoliae, Sida floridana, is described and accommodated in a revised key to the section. Additional notes are provided on selected taxa as an update to the most recent treatment.
(Vol. 04, 2001-12) An Unusual New Species of Phyllanthus (Euphorbiaceae) from Colombia
A new species, Phyllanthus mutisianus, is described on the basis of a collection from Colombia made by the expedition of Jose Mutis. It is distinguishable from all other neotropical species of Phyllanthus by virtue of the ...