Chromosome numbers in some cacti Of western North America—II D. J. PinkavaM. G. McLeodR. C. Brown OriginalPaper Pages: 2 - 9
Genetic relationships between Bidens forbesii and six species in the Hawaiian and the Marquesas Islands George W. Gillett OriginalPaper Pages: 10 - 14
The fleshy-fruited Galiums (Rubiaceae) of Mexico and Central America Lauramay T. Dempster OriginalPaper Pages: 15 - 20
New endemic species of Harpalyce (Leguminosae: Brongniartieae) from South-Central Brazil with a key to the Brazilian species H. S. IrwinMary T. Kalin Arroyo OriginalPaper Pages: 21 - 25
The classification of the generic segregates of Phrygilanthus (= Notanthera) of the Loranthaceae B. A. BarlowD. Wiens OriginalPaper Pages: 26 - 39
Hybridization and evolution in Picradeniopsis (Compositae) Tod F. StuessyRobert S. IrvingWilliam L. Ellison OriginalPaper Pages: 40 - 56
Chromatographic studies on the Red Horse-chestnut (Aesculus X carnea) and its putative parent species Ju-Ying HsiaoHui-Lin Li OriginalPaper Pages: 57 - 63
Taxonomy of seven species of Sagittaria from eastern North America Jean W. Wooten OriginalPaper Pages: 64 - 74
Contributed papers for the First International Congress of Systematic and Evolutionary Biology J. L. Reveal Notice Pages: 74 - 74
