Scirpea..] CXOIX,. OYPERACEJE. 1047 
mate repente simplices, supra medium foliati et florentes, foliis inferioribus plerisque ad 
vaginas breves reductis. Spieule longiuseule, plures in spica laxa distichz, sessiles, 
spicis secus caulem pluribus, omnibus axillaribus, pedunculis communibus e vaginis non 
exsertis. Folia floralia seu bractere foliacez sub spicis iis longiora. Bractere sub spiculis 
glumis similes. 
Species 1, boreali-Amerieana. Kunth, Enum. Pl.ii.329. Steud. Syn. Pl. Glum.ii,2. Baeckel, 
in Linnea, xxxvi. 414. Ell. Bot. S. Carol. et Georg. t. 2. 
Genus quoad spieulas Cypero (Papyro) affine; sctis hypogynis distat et habitus peculiaris, 
6. zHeleocharis, R. Br. Prod. 224(Eleocharis).—Spicule pluri- scepius multi-florz, floribus 
omnibus hermaphroditis. Glum:e undique imbricatze, exteriores 1 rarius 2 minores vacu:e. 
Seis hypogynre swpius 6, sed variant 3-8 v. rarissime omnino desunt. Stamina 3 v. 
pauciora. Stylus supra basin bulboso-i tam [ tenuis, cont demum 
deciduus, ramis stigmatosis 2 v. 3 filiformibus. Nux nune obovoidea v. subglobosa 3-cos- 
tata, nune compressa v. 2-convexa, costis 2 inalibus, basi persistente styli conica v. 
depressa coronata.— Caules crespitosi v. e rhizomate repente erecti, simplices, aphylli, 
' vagina longa appressa et sepe vaginis nonnullis exterioribus basi stipati. Spicula termi- 
nalis, solitaria, erecta, exinvolucrata, nisi gluma extima vacua (v. bractea glumiformi) 
interdum czeteris paullo majore stipata; rarissime in specimine casu prolifero spicula 
altera evolvitur. 
Species enumerate ultra 80, plures tamen inter se wgre distinguendz, per regiones tropicas et 
temperatas utriusque orbis imprimis in locis uliginosis v. aquaticis latissime disperse, etiam ad 
terras arcticas extense. Kun/A, Enum. Pl.ii.139. Steud. Syn. Pl. Glum. ii. 76. Beckel. in Linnea, 
xxxvi. 418. Benth. Fl. Austral. vii. 290. 
Genus habitu et styli basi distincte dilatata haud male definitum, etsi species nonnulle sectionis 
Scirpidii ad Scirpi sectionem Beothryon prope accedant ; in sectiones 3 sequentes dividitur :— 
1.L AL Spieula cylind sepius majuseula, glumis sepius numerosis obtusis vix 
carinatis rigidulis margine hyalinis. Nueis rostrum sepius depresso-conicum. Caules sepe elati, 
interdum septis transversis nodulosi. Hoftb. Descr. et Jc. Pl. t, 15, f. 1, 2 (Scirpus), Ioab. Cor. PI. 
1, 231 (Scirpus).. Liwxocnroa, Nees in Linnea, ix. 294. 
2, Scirpidiwm. Spieula cylindracea, obtusa v. superne acutata, quam in Limnochloa sepius 
minor. Glum:e dorso carinate v. linea centrali notatz. Nucis rostrum breviter conicum, szpe a 
latere compressum. Caules nune elati fere Li AL lumis issimis angustis, nune 
tenuiores spieulis angustis iis sect. sequentis accedentes, Host, Gram, Austr. ii. ?. 65, 56, 60 
(Seirpus). Beichb. Ic. Fl. Germ. t. 204, 295. Nees, Gen. Fl. Germ. Monocot. ii. n. 18 et 19 (Eleo- 
charis et Scirpidium). Del. Fl. Eg. t. 6, f. 2. C. Gay, Fl. Chil.t. 71, J.3. SormPrpivM, Nees in 
Linnea, ix. 293. 
3. Heleogenus. Spicula ovoideo-coniea v. parva pauciflora, Glum:e dorso carinate v. linea viridi 
notatz. Nueis rostrum breve, depressum. Caules tenues, humiles, interdum fluitantes v. filiformes. 
Spicule sepius parve. — Hoftb. Descr. et Tc. Pl. t. 15, f. 3 (Scirpus). C. Gay, Fl. Chil. t. 71, f. 1, 2. 
CixrocypEnvs, Nees in. Linnea, ix. 289, et ErzoeENvs, ees, 1. c. 294. 
Tiwxocnroa, Jeauv. in Lestib. Essai Fan. Cyp. 41, includit species Heleocharitis varias e diversis 
sectionibus stylo 3-fido. 
7. Dichromena, Mich. Fl. Bor. Amer.i. 9T. (Dichroma, Pers. Syn. i. 57.)—Spiculie 
ovoidere, obtuse v. vix acuminatee, floribus pluribus ssepius numerosis, inferioribus v. fere 
omnibus. hermaphroditis, superioribus interdum masculis. Glum:e undique imbricatw, 
obtuse, sepe albidre, omnes florentes v. infima vacua. Setm 0. Stamina 3 v. pauciora. 
Stylus basi incrassatus, persistens, superne tenuis, deciduus, ramis stigmatosis 2 fili- 
formibus. Nux obovata v. oblonga, sspe transverse rugosa, styli basi lata indurata 
rostrata.— Herbie perennes, caulibus foliatis. Spicule swpius plures, in capitulo terminali 
sessiles, rarius 3-5 brevissime pedicellate y. solitari:e. Bractesz exteriores nunc foliaceze 
2 v. 3 elongatz basi albidz, nunc brevissime. 
Species ad 8, Ameriem borealis et australis tropieme incole.  Kwnth, Enwm. PL. ii. 2974, quoa2 
secl. 1. Steud. Syn. Pl. Glum. ii. 134. 
Genus Scirpeas cum Rhynchosporeis arcte connectit, Nuces parvi, sepius numerose Scirpearum, 
