J. N. Rose: Umbelliferae novae Georgianae. 99 
XXXI. J. N. Rose, Umbelliferae novae Georgianae. 
(Ex: Proc. Unit. St. Nat. Mus, XXIX [1905], p. 441—442 with pl. IL.) 
Harperia Rose, gen. nov., 1. e., p. 441. 
Calyx teeth present, small, persistent. Fruit flattened laterally, shortly 
oblong in outline, rounded at both ends, glabrous; carpels hardly flattened, 
terete or somewhat angled in section; ribs rather prominent for the 
size of fruit, equal; stylopodia conical; styles slender. Oil-tubes solitary 
in the intervals, two on the commissural side. Seeds nearly terete in 
section. 
A smooth aquatic perennial without normal leaves but bearing instead 
slender terete-jointed phyllodia, with very inconspicuous involucre and 
involucral bractlets, and white petals. 
1. Harperia nodosa Rose, l. c., p. 441, pl. III. 
Stems erect, branching, fluted, 100 to 120 cm high; basal and lower 
stem leaves 20 to 40 cm long; peduncles slender, 2 to 4 cm long; rays 
5 to 15. 
Collected by Roland M. Harper, in shallow exsiccated pond near 
Ellaville, Schley County, Georgia, July 10, 1902, in fruit (no. 1411, 
type); and in large shallow pine-barren pond between Pinehurst and 
Unadilla, Dooly County, May 21, 1904, in flower (no. 2220). 
2, Zizia arenicola Rose, |. c., p. 442. 
Stems slender, 40 to 60 cm tall, sparingly branched above; basal 
leaves long-petioled, once two twice ternate, the two lower first divisions 
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, subequal, 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 County, 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 Zizia bebbii but differs in having more 
compact umbels, shorter rays, and larger and more elongated as well 
as differently shaped fruit. Then, too, Z. bebbii is principally 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. 
