11)0 Rhodora [September 



Ranunculus arcuans, n. sp., caule 10-17 cm. longo repente j>il is 

 late patentibus hirsuto; foliis radicalibua longius petiolatia quam 



canlinis, omnibus ternatifidis dense hirsutis in facie inferiore supra 

 sparse pilosis; foliolis 3-lobatis; lobis grosse dentatis; floribus parvis; 

 sepalis reflexis subtus hirsutis supra glabris; achaeniis in eapite glo- 

 bose prominenter marginatis margine dorsali rotundatis, margine 

 ventrali vel minus rotundatis vel rectiusculis, faeiebus planis, rostro 

 in apicem arcuatam attenuate. 



Stem 10-17 cm. long, repent, hirsute with bristling widely spreading 

 hairs: radical leaves Ionger-petioled than the stem-leaves, all ter- 

 natified, densely hirsute on the lower side, sparingly pilose on the 

 upper; leaflets 3-lobed, lobes coarsely toothed: flowers small: sepals 

 reflexed, hirsute on the lower side, glabrous above: achenes in a glo- 

 bose head, prominently margined, dorsal margin rounded, ventral 

 much less so or nearly straight; faces flat; beak attenuate into a 

 hooked tip. — China: Province of Hupeh, 1885-88, A. Henry, no. 

 4039 (type in Gray Herb.); Province of Fukien, 1904, Hongkong 

 Herbarium, no. 2317. 



This plant has a low and repent habit as contrasted with R. pensyl- 

 vanictu L., which is high and erect. The achenes of these two species 

 are more or less alike but the style in the Chinese plant is longer than 

 in the American and conspicuously hooked. The achenes of the 

 Chinese plant are also prominently margined and the shape of the 

 head of achenes is globose. 



Shanghai, China. 



GALIUM PILOSUM AND ITS VARIETIES. 



C. A. Weatherby and S. F. Blake. 



Ever since 1841 the traditional treatment of Galium pilosum. has 

 been that adopted in Torrey and Gray's Flora of North America, dis- 

 tinguishing a typical, wide-spread variety with pubescent stem and 

 commonly oval leaves, and a southern one nearly or quite glabrous 

 and with narrower, more oblong leaves. The recent collection by 

 one of ns, on Cape Cod, of two apparently different forms has led to 

 a study of the forms of the species which shows that at least one more 

 variety can profitably be recognized, and also leads to what we may 



