REVIEWS 121 



for all, of the species. Synonyms used by authors of other widely-used manuals 

 are given in some cases. That they are not given in all cases is, in the opinion 

 of this reviewer, one of the major defects of the book. Users of this manual 

 will want to know not only what the correct name of each species is in the opin- 

 ion of the writer, but also under what names the species may be found in other 

 popular manuals such as Gray's "New Manual of Botany," Britton & Brown's 

 "Illustrated Flora," Small's "Manual of the Southeastern Flora," Rydberg's 

 "Flora of the Prairies and Plains," Deam's "Flora of Indiana," Marie- Vic- 

 torin's "Flore Laurentienne," Lundell's "Flora of Texas," Jepson's "Flora of 

 California," Hitchcock's "Manual of the Grasses of the United States," 

 Abrams' "Illustrated Flora of the Pacific States," and such standard reference 

 works as "Standardized Plant Names," "North American Flora," and Bailey's 

 "Encyclopedia of Horticulture." 



Generic synonyms are, indeed, given in some instances {e.g., Justicia, 

 Nuphar, Nymphaea, Suae da), but there seems to be no mention in the entire 

 book of the generic names Aranella, Biovularia, Bruneria, Calpidisca, 

 Comarum, Lecticula, Neobeckia, Persicaria, Philotria, Piaropus, Setiscapella, 

 Stomoisia, Tillaeastrum, and Vesciculina — to mention only a few — which are 

 accepted in one or more of the above-mentioned recognized manuals. It is 

 astonishing to find no synonyms whatever given for the water-cress — a species 

 which has a different scientific name in almost every manual one consults due 

 to the exceptionally complicated nomenclatural tangles connected with that 

 group of mustards ! Although Potamogeton heterophylhis is a name adopted 

 by Gray, Britton & Brown, Small, and Rydberg, it is not mentioned even in 

 synonymy by Muenscher, nor is the name given under which Deam recognizes 

 the plant. 



The present reviewer can find no mention in the book, in synonymy or 

 otherwise, of Potamogeton floridanus, P. curtissii, Naias gracilis, Alisma sub- 

 cordatum, Helanthium parvulum, Sagittaria stagnorum, S. lorata, S. filiformis, 

 S. isoetiformis, S. cycloptera, S. mohrii, S. chapmanii, S. angustifolia, S. 

 macrocarpa, S. pubescens, S. omithorhyncha, S. viscosa, S. australis, Philotria 

 linearis, Aranella fimbriata, Calpidisca standleyae, Utricularia pumila, U. 

 macrorhisa, U. floridana, U. foliosa, Lemna trinervis, Xyris stricta, X. torta, 

 X. communis, X. data, X. scabrifolia, X. difformis, X. serotina, X. elliotti, 

 X. pallescens, X. baldwiniana, Proserpinaca amblygona, P. platycarpa, Myrio- 

 phyllum pinnatum, M. laxum, Nymphaea ulvacea, N. fluviatilis, N. chartacea, 

 N. macrophylla, N. orbiculata, N. bombycina, Castalia minor, C. lekophylla, 

 Eriocaulon lineare, E. kornickianum, E. texense, and Thalia geniculata, to 

 mention only a few of the species accepted in widely used manuals today. Does 



