50 
persists on the summit of the achenium, and that the leaves are 
usually filiform and their sheaths ciliate. The persistent bulbous 
base of the style is the crucial character. 
The North American species known to me are as follows: 
I, Spikes capitate. 
a. Scales of the spikelets long-cuspidate. 
’ 1, STENOPHYLLUS STENOPHYLLUS (EIl.). 
Scirpus stenophyllus Ell. Bot. S. C. and Ga. r: 88 (1816). 
Dichroma cespitosa Muhl. Gram. 14 (1817). 
Dichromena cespitosa Spreng. Syst. 1: 202 (1825). 
Stenophyllus cespitosus Raf. Neog. 4 (1825). 
Lsolepis stenophyllus Torr. Ann. Lyc. N. Y. 3: 353 (1836). 
Setrpus barbatus var. Americanus Boeckl. Linnza, 36: 752 (1870). 
North Carolina to Florida and Louisiana. 
b. Scales of the spikelets obtuse. 
¥ 2, STENOPHYLLUS WAREI (Torr.). 
fsolepis Waret Torr. Ann. Lyc. N. Y. 3: 353 (1836). 
Florida (Ware, Garber, Chapman, A. H. Curtiss No. 3135). 
II. Spikes umbellate (sometimes solitary in depauperate forms). 
v 3. STENOPHYLLUs CAPILLARIS (L.). 
Scirpus capillaris L. Sp. Pl. 49 (1753). 
Isolepis capillaris R. & S. Syst. 2: 118 (1817). 
Scirpus ciliatifolius Ell. Bot. S. C. and Ga. 1: 82 (1816). 
Isolepis ciliatifolius Torr. Ann. Lyc. N. Y. 3; 352 (1836). 
Throughout nearly the whole of North America except the 
extreme north. 
v4, STENOPHYLLUS CAPILLARIS COARCTATUs (EIL). 
Scirpus coarctatus Ell, Bot. S. C. and Ga. 1: 83 (1816). 
Lsolepis coarctata Torr. Ann. Lyc. N. Y. 3: 352 (1836). 
Fimbristylis capillaris var. coarctata Britton, Bull. Torr. Club, 15: rs 
(1888). 
Georgia and Florida. 
a 
III. Spikes solitary, terminal ; fertile flowers borne also at the base of the culms. 
V-5. STENOPHYLLUS FuNcKII (Steud.). 
Tsolepis Funckii Steud. Syn. Pl. Cyp. 91 (1855). 
Scirpus heterocarpus S. Wats. Proc. Amer. Acad. 18: 171 (1883). e 
Arizona (Pringle); Chihuahua (Pringle, No. 1398); Mexico 
(Pringle, No. 3436); Jalisco (Pringle, No. 3428); Orizaba ottes 
Bolivia eae. Ales 
