/ 



150 



Convolvulus sericatus sp. nov. 



Annual : stems twining, 50-100 cm. high, tomentose above, 

 usually glabrous only at the base : leaf-blades oblong-ovate, 

 acuminate, somewhat hastate-cordate, green but finely appressed 

 silky-pubescent above, white beneath with a very dense silky- 

 tomentulose indument, 6-8 cm. long, 2.5-6 cm. broad near the 

 base ; the rounded basal auricles not spreading, 1-1.5 cm. long ; 

 petioles about half as long as the blades, tomentose : peduncles 

 surpassing the subtending leaves, 7-1 1 cm. long, tomentose like 

 the petioles; bracts equal, ovate, acute, 2.5—3 ^'^^^ ^oi''g. tomen- 

 tose without, glabrous within: sepals lanceolate, 11-13 mm. 

 long, glabrous, the evident midvein ending in a minute cusp at 

 the apex : corolla pure white, funnelform, 5—6 cm. long, the limb 

 as broad or slightly broader : capsules about i cm. in diameter. 



Georgia ; near Rabun Bald, Rabun County, in thickets along 

 mountain sides, 3,500—4,000 feet altitude, June 4, 1906 {110. 22'j6). 

 The type is divided and deposited in the herbaria of the U. S. Na- 

 tional Museum and the New York Botanical Garden. 



The plant is conspicuous on account of its pure white flowers 

 and white indument of the foliage and younger parts. It appears 

 to be perfectly indigenous to the region and does not occur in 

 the few small cleared fields in the valleys and coves. In color 

 and shape of the corolla only does Convolvulus sericatus resemble 

 C. rcpcns, which is sometimes a twiner, but has smaller, glabrous, 

 and more obtuse bracts than C. sericatus. In shape of leaf-blades 

 and in habit C. sericatus resembles C. ainericanus. 



Homer D. House. 



Clemson College. 



REVIEWS 



De Vrles' Species and Varieties, Second Edition* 



The first edition of de Vries' " Species and Varieties : their 



origin by mutation " having been exhausted within a year from 



the time of its publication, a second edition has been issued. 



The tone of the reviews of the first edition indicated the general 



favor which the work met among scientific men and predicted the 



reception it has had. It is gratifying to see a work of high sci- 



* De Vries, Hugo. Species and Varieties : their origin by mutation. Second edi- 

 tion corrected and revised. 8vo, pp. xviii -\- 847. Frontispiece. Chicago : The 

 Open Court Publishing Company. 1906. 



