Cyperacete.) SANDWICH ISLANDS. - 99 



The specimens in the Collection agree sufficiently with the above character. To us, this species seems 

 closely allied to JR. fusca. 



2. Rhynchospora sclerioides; paniculis densis erectis rigidis axillaribus, squamis ad- 

 pressis, foliis rigidis margine dorsoque scabris culmum triquetrum asquantibus. 



Culmus erectus, foliosus, triqueter, glaber. Folia rigida, linearia, dorso marginequc scabra, culmum 

 aequantia. Spicce dense fasciculato-paniculatse : panicuim axillares ; spicules triflores. Squama; adpressa>, 

 oblongo-lanceolatse, mucronato-aristatse, glabra?. Achenium rotundum, lenticulari-comprcssum, longitudin- 

 aliter punctato-lineatum, glabrum ; rostellum ensiforme, achenii latitudinem aequans, longitudiue duplo supcr- 

 ans. Stylus elongatus bifidus. Seta) hypogynaV 4-6 capillares, retrorsum scabrse. 



1. Cyperus mucronatus. Vahl. — Roem. et Schult. Syst. Veget. v, 2. p. 167. Spreng. Syst. 

 Veget. v. 1. p. 217. 



Found in the Island of Oneeheow. 



2. Cyperus brunneus; spicis lanceolatis glomerato-corymbosis, squamis striatis, involucre 

 3-phyllo elongato, foliis linearibus culmum triquetrum sequantibus. Spr. — Sw. — Roem. et 

 Schult. Syst. Veget. v. 2. p. 176. Spreng. Syst. Veget. v. I. p. 219. 



3. Cyperus ccespitosus; spicis lineari-oblongis compressis umbellato-glomeratis, umbellis 

 umbellatis pedunculatis, squamis obtusis margine scariosis, involucro triphyllo elongato, 

 culmo filiformi triquetro, foliis linearibus planis. Spr. — Roem. et. Schult. Syst. Veget. v. 2. 

 p. 194. Spreng. Syst. Veget. v. I. p. 221. 



4. Cyperus paniculatus; spiculis lanceolatis compressis horizontalibus remotiusculis, 

 squamis duabus inferioribus subulatis vacuis cseteris obtusis striatis, umbellse umbellulaeque 

 radiis alternis, involucro partiali nullo universali poly-(8)-phyllo, foliolis tribus elongatis, 

 culmo acute triquetro. — Rottb. in Gram. p. 40 ? Roem. et Schult. Syst. Veget. v. 2. p. 189 ? 

 Spreng. Syst. Veget. v. I. p. 223? 



We feel extremely doubtful about any of the synonyms. Our plant, judging by a solitary imperfect speci- 

 men, is nearly allied to C. strigosus. 



5. Cyperus strigosus; spicis lineari-subulatis confertis horizontalibus remotiusculis, um- 

 bellulae radiis alternis, involucro pentaphyllo elongato foliis culmum aequantibus. Spr. — 

 Linn. — Roem. et Schult. Syst. Veget. v. 2. p. 214. Spreng. Syst. Veget. v. I. p. 226. 



6. Cyperus trachysanthos ; spiculis oblongis compressis plurimis glomerato-umbellatis, 

 umbellulis ultimis confertim umbellatis subternis, squamis ovatis mucronatis apice recurvis 

 dorso denticulis asperatis, involucro triphyllo elongato, culmo trigono. 



Sometimes the rays of the umbel are not again divided, but bear the ultimate sessile spikelets in a bead 

 at their extremity. There are two varieties in the Collection, one with spikelets, containing about thirty 

 flowers, and the culm free from all asperities ; the other with shorter, more ovate spikelets, of from eight to 

 ten flowers, and the angles of the culm scabrous near the umbel. In this last, the ultimate umbels are not 

 half the size of those in the first variety. 



7. Cyperus caricifolius ; spiculis patulis spicatis racemosis ovato-oblongis turgidis con- 

 gests, squamis subrotundis concavis obtusis nervosis albidis, involucro partiali nullo univer- 

 sali 5-6-phyllo elongato, culmo obtuse trigono, foliis carinatis margine carinaque scabris. 



N 2 



