442 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxix. 



The following- note about this plant and its distribution is furnished 

 me by Mr. Harper: 



"Both localities are in the costal plain, and witliin 35 miles of each 

 other, but in quite difterent surroundings, the former being- outside of 

 the pine-barren region (which in Georgia comprises approximately the 

 lower three-fourths of the coastal plain) and the latter just within. 

 The plant is quite abundant at both places, especially at the second, 

 where 1 first noticed it from a moving train. Suspecting it to be the 

 new genus, I went back the next day and collected it. OxypoUs fili- 

 formis^ which has about the same adaptations to environment — i, e,, 

 terete bladeless leaves — grew with it there, Ijut as it ( Oxypolis) flowers 

 about two months later the two plants are not likely to be confused. 

 The new plant must be very local in its distribution, for I have 

 explored every county in the coastal plain of Georgia more or less 

 without meeting with it elsewhere." 



ZIZIA ARENICOLA Rose, sp. nov. 



Stems slender, 40 to (30 cm. tall, sparingly branched above; basal 

 leaves long-petioled, once to twice ternate, the two lower first divi- 

 sions often simple and long-stalked; stem leaves few, similar to the 

 basal but more reduced; leaflets lanceolate to orbicular often rounded 

 at apex, coarsely toothed or crenate; rays few, nearly erect, sub- 

 equal, 1.5 to 2.5 cm. long; fruit oblong, 4 to 4.5 mm. long. 



Collected by Roland M. Harper, at base of sand hills of Ochlock- 

 nee Creek near Moultrie, Colquitt Count}^ Georgia, August 22, 1903 

 (no. 1940, type), and in rather dry sandy woods southeast of Americus, 

 Sumter County, Georgia, June, 1897, and July 8, 1901 (no. 1020). 



This species comes nearest Zisia l)eJ>hri but difl^ers in having more 

 compact umbels, shorter rays, and larger and more elongated as well 

 as differently shaped fruit. Then, too, Z. Ijehhii is principallv a moun- 

 tain species, preferring cool shaded situations, while this one grows in 

 exposed sandy places in the Atlantic coastal plain at an altitude of 

 about 90 meters. 



Mr. Harper, who collected this species, agrees with me in consider- 

 ing it distinct, sa3'ing in part: ''From ph3^togeographical considera- 

 tions alone 1 should think it would be reasonable to separate nos. 1020 

 and 1940 from Zlzla hehhiV 



