TRIANDRIA MONOGYNIA. Cyperus. 
motiusculis, ¢nvolucellis subnullis, umbellulz radiis al- 
ternis; Vahl, enum. pl. 2. p. 358. Willd. sp. pl. 1. 
p. 281, T 
In swamps and ditches, common. 2%. July. v.v. 
19. C. spiculis lineari-lanceolatis, valvulis oblongis obtusis, 
fructiferis patentibus, involucro longissimo. Pahl, 
enum. pl. 2. p. 360, Mich. fl. amer. 1. p.27. 
C. elegans, Walt. fl. car. 70. g 
In boggy woods: Pensylvania to Carolina. Y. July, 
Aug. v.v. 
20. C. spicis distichis, spiculis filiformibus patentibus, flos- 
culis distantibus, umbela stricta, Vahl. enum. pi. 2. 
p.362. Willd. sp. pl. 1. p.288. 
Icon. . Rottb. gram. t.10. C. elatus. | 
In sandy wet woods: Carolina and Georgia. Y.v.s. 
21, C, spicis corymbosis, spiculis subulatis distichis, umbel- 
Tulis involucello brevioribus, ochreis biaristatis, culmo 
acutangulo, Vahl. enum. pl. 2. p. 364. 
C. virginicus. Jacq. in Herb. Lambert. 
In Virginia. Vahl. Y. v. s. in. Herb. Lambert. 
22. C. spicis corymbosis oblongis basi ramosis nudis, spicu- 
lis numerosis divaricatis confertis linearibus subsexfloris, 
- valvulis oblongis striatis, involucro octophyllo umbel- 
. , lam subeequante. . À 
In ditches near ponds: Virginia to Florida, rare. 
A V.UV. 
Folia tadicalia, linearia, 3-nervia, glabra, margine ca- 
rinaque scabra, culmo breviora. Culmus levigatus, 
triquetrus,  Znvolucrum suboctophyllum : foliola in- 
teriora breviora, exteriora radiis umbelle longiora. 
Umbella composita: radii octo vel decem. Spice 
oblongz, basi ramose, magna.  Spicule numerose 
(circiter 100), horizontales, castanez, An var. C. spe- 
ciosi ? 
I have named this species in memory of Mr. Enslen, 
through whose generous communication I have been 
 — put in possession of a number of grasses and other 
= — plants growing in the southern States. 
57. DULICHIUM. Pers. ench. 1, p. 65. 
1. D. culmo triquetro folioso, spiculis patulis subsexfloris. 
ouf mk doe, coo [au 
Pleuranthus floribundus. Rich. — 
Cyperus spathaceus. Willd. sp. pl. 1. p. 289. 
distans. 
Enslenii. 
