North Amrr'ican Ci/pcracefp. 347 
marshes near New York, and along the sea-coast of New Jersey. 
— August to September. 
Obs. This species is somewhat variable in its appearance. 
When it grows in salt marshes, the scales, especially in the 
mature spikes, are of a dark chestnut colour and polished ; 
while in fre^h water swamps, they are much paler and more or 
less pubescent. P^requently the umbel is compound, and the 
rays elongated. In northern specimens, I always find three 
stamens, but in a variety from Florida the flowers seem to be 
diandrous. 
Species of Fimbristylis which are little known. 
1. F. CTLixpRicA, Vahl. "F. spicis cylindricis obtusissimis, invo- 
lucre subnionophyllo rigido umbellam simplicem Eequante, VaJiI, enitm. 
2. p. 293, (excl. syn.); Pursh, fl. 1. p. 49; Rcem. S^- Schult. syst. 2. p. 
101. 
" Culmi bipedales et ultra, apice triquetri ; folia culmo brevlora, con- 
voluto-filiformia, glaucescentia; vaginis fusco-nigricantibus. Invo- 
lucrum umbella paruni brevius, lineare, planum. Umbella quinque- 
radiata, radiis setaceis, longior bipollicaris. Spicns fere unguiculares, 
penna columbina parum crassiores, arete iinbricata', spadicege ; squanifE 
subrotiindnp ; foliola duo setacea sub spicula longius pedunculala. Semen 
subrotundum, subcompressum, lasve." 
" In America septentrionali." Bosc. — From the description of this 
plant, it appears to differ very little froin F. spadicea. 
2. F. MUCRONATA, Volil ; Spreng. sysl. 1. p. 199; Ram. S^' Schult. 
syst. 2. p. 102. Richard, the discoverer of this species, found it in the 
island of Mahon. According to Sprengel it is also a native of North 
America, but this botanist considered the F. mucronata and P. cylindrica 
as one species, and indeed, they appear to differ very little. 
3. F. PUBERULA, Vahl. F. spicis ovatis pubesceniibus, involucro 
involucellisque diphyllis ; umbella composita umbellulisque longioribus, 
Vahl, enum. 2. p. 289 ; Pursh, fl. 1. p. 49; Rcem. Sf Schult. syst. 2. p. 97; 
Scirpus pubendus, Mlchx..' fl. p. 31 ; S. pubescens, Pers. syn. 1. y). 68; 
S.ferrugincus, Elliott, sk. 1. p. 85? 
In Carolina and Georgia, Michaux; Virginia to Florida, Pursh. 
Obs. The Fhnbristylis {Scirp.) puberulus in Michaux's herbarium 
appears to be merely F. spadiceus in an immature state. Scirpus ferru- 
