No. 378.] REVIEWS OF RECENT LITERATURE. 461 
Greene and 7: villosa Britton are exact synonyms, founded upon the 
same plants of the Pacific slope; T. macrotheca, var. scariosa, and T, 
pallida are also perfect and confessed synonyms ; the recent 7: 
gracilis is identical with the much older Spergularia platiensis of 
South America; 7: salsuginea Bunge is an impossible combination 
as the last of Bunge’s many papers was published before the resur- 
rection of Tissa, while Spergularia salsuginea (Bunge) Fenzl in its 
American use is an exact synonym of 7, diandra. Thus, of Mr. 
Heller’s sixteen species and varieties about half are either repeated 
under some obvious synonym or are adorned with incorrect authori- 
ties. These are not differences due to divergent botanical opinion. 
They are clearly errors of careless compilation, all of which could 
have been easily avoided by slight study of the recent monographs. 
Surely, this is not the best that our reformers can do with their pet 
genus after more than five years of unprecedented activity. B. L. R. 
A Review of Canadian Botany.'— The second portion of Pro- 
fessor Penhallow’s admirable historical sketch, now before us, traces 
botanical activity in Canada from 1800 to 1895. The first few 
pages describe the Canadian work of the younger Michaux, Pursh, 
F. A. Holmes, Titus Smith, Goldie, the Hookers, La Pylaie, Brunet, 
Provancier, the late George Lawson, Sir William Dawson, and some 
others. Attention is then directed to the botanical gardens, societies, 
and collections of Canada, to the results of the Natural History 
Survey under Professor Macoun, and to the facilities for botanical 
work in the leading educational institutions of the country. The 
larger and by far the most valuable part of the paper, however, is 
an excellent bibliography of Canadian botany during the period 
covered. This list contains nearly five hundred titles and shows 
exceptional care and attention to detail. BLR 
Coastal and Plain Flora of Yucatan.?— Dr. Millspaugh’s third 
important paper upon the flora of Yucatan is an annotated list of 
plants collected by Dr. Arthur Schott in 1864-66, by Mr. Whitmer 
Stone in 1890, and by Dr. George F. Gaumer in 1895-96, together 
with some notes and new species by Professor Radlkofer and Dr. 
Loesener. This catalogue enumerates more than three hundred 
species and varieties not hitherto recorded in the flora of this 
poorly known territory. Noone who has not had some experience in 
1 Penhallow, D. P. Zyans. Roy. Soc. Canad., ser. ii, vol. iii, sec. 4, pp. 3-56. 
? Millspaugh, C. F. Publ. Field. Columb. Mus., No. 25, issued January, 1898. 
