29 



5; capsule subglobosc. 4 nun. in diaineler, circuniscissile at the 

 middle; seeds black, 0.8 mm. wide, rounded-tuberculate. 



Type from Cerro San Antonio, Oaxaca, Mexico, July 26. 1906 

 (C Conzatti 142^, type; ,,^0?/^. 



^Portulaca mexicana I\ W ilson. sp. nov. 



A fleshy perennial herb, with tuberous roots, and ascending or 

 spreading branches, hairy in tufts in the axils of the leaves; 

 leaves often persistent, the blades terete, linear, 5-9 mm. long, 

 1.5-2.2 mm. broad, acutish or obtuse at the apex, short-petioled; 

 flowers terminal in clusters of 2-4, surrounded by brownish 

 hairs and an involucre of 9-12 leaves; calyx-lobes orbicular or 

 triangular-orbicular, 3.5-4 mm. long, 3.6-4 mm. broad; corolla- 

 lobes obovate, 4.5-5.3 mm. long, 2.5-3 mm. broad; stamens 

 about 14; style-lobes 3 or 4; capsule ovoid, 4-4.2 mm. high, 3.5 

 mm. in diameter, circumscissile near the base; seeds 0.6-0.7 

 mm. in diameter, minutely spiny-tubercled. 



Type collected in a lava field, Tizapan. Mexico, July 30, 1901 

 (C. G. Pnngle8j/6). 

 " New York Botanical Garden. 



BOOK REVIEW 

 Colorado Plant Life* 



Not long ago a resident of Colorado asked me where to find 

 non-technical information about the flowers and trees of Colo- 

 rado. Fortunately, I had just received a copy of Ramaley's 

 Colorado Plant Life and lost no time in recommending it. The 

 book is neither a manual of the Colorado flora, nor a mere list, 

 nor a textbook, but a distinct and apparently a successful at- 

 tempt to select from the great mass of botanical knowledge a 

 series of facts in which any person may well be interested and 

 which will do much to answer the numerous botanical questions 

 which arise with every intelligent observing person. It has 

 sometimes been said that botany as a field of study in our higher 

 schools lacks the popularity of the humanistic subjects because 

 so much of it deals with phases of plant life with which the 

 student never comes in contact outside the class-room, while his 



* Ramaley, Francis. Colorado Plant Life. Pages viii + 299. /jj figures, 

 J plates in color. 1927. The University of Colorado, Boulder. $2.00. 



