690 CYPERACEAE. 



Tribus IV. RHYNCHOSPOREAE Knth. 1. c. 274. 

 XXIIla. PSILOCARi;! Torrey. 



(Torrey in A. Gray, Manual of the bot. of ihe North. Unit. Slaates 531.) 



Spicae ovoideae teretes mulliflorae, fioribus omjiibus perfectis, 

 squamae imbricatae multiserrales. Perianlbium niilhnn. Stamina plerum- 

 que gemina. Slyitis bifidus. Acbaenium (?) biconvexum magis minusve 

 transverse rugosum, tuberculo persistente stylive basi coronalum. — 

 Herbae (Boreali-Americanae) perennes: culmo folioso; spicis in cymas 

 terminales axillaresve dispositis. 



1. PS. SCIRPOIDES Torr. mss. ex A. Gray 1. c. — Spipis 20— 30-Horis; squamis oblongo- 

 ovatis acutis castaneis ; achacnio (??) obsoleie rugoso; siylo persistenle ensifoimi 

 coronato hasique decurrente dilatata maiginato. — Habitnt locis inundatis (Rhode islaml, 

 Massachussets) in America boreali. 



2. PS. MEXICANA Liebm. Mexicos Halvgraes pag. 60. f — Culmo stricto crecto irique- 

 tro 2'/, — 3-pedali; foliis l'/V" laiis, basilarihus densis, caulinis remotis, ngidis 

 carinatis glabris, apice subtrigono pungentibus, vaginis angustis, ore nudo membrana- 

 ceis ; corymbis axillanbus terminalihusque palulis, axillaribus minoribus longe pedmi- 

 culatis compositis, pedunculo 2 — 4- pollicari, terminali inajore 3 poll. longo supra- 

 decomposiia, ramis IVs-poHicarihus, ramulis inlerioribus usque ad pollicem longis in- 

 volucro 2 — 3-phyllo corymbum subaequanle, phyllis margine cilialis; bracteis hra- 

 cteolisque ad basin ramorum ramulorumque corymbi setaceis cilialis; ochreis brevibus 

 membranaceis obhque truncalis; spiculis 2 — 5 fasciculalis snbsessilibus lanceolatis 

 terelihus 3'" longis, basi bractea minuta pallida suffultis; squamis imbricalis 12—14, 

 quarum inferiorcs 4 minores vacuae cinereae late ovatae mucronatae carinatae con- 

 cavae, reliquae fertiles majores rufae , inferiores lanecolaiae aculae brevius mucro- 

 nalae carinaiae uninerviae , superiores nonuullae vacuae; staminibus 3, filamentis ex- 

 sertis persistentibus ; slylo stamiiubus longiore usque ad hasin fisso deciduo ; caryopsi 

 breviter sljpilata ohovato-lenticulari transverse undulalo-rugosa spadiceo-nigra nilida, 

 margine stipiteque pallidiore, rostro caryopsi parum breviore caesio compresso lan- 

 ceolalo obtuso , basi cmargiualo - hilobo in inargiiiein cai yopseos decurrentc. — Ha- 

 bitai iu Mexico in distr. Vera Cruz. 



XXVla. €EPfSALOS€f20E;i$LS /V. ab E. 



(N. ab E. Linnaea IX. 295. — Hhynchosporae spec. Kuili. Enumer. II. 287.) 



1. C. MARGINATUS Liebm. Btexieos Halvgraes p. 62. f — Culmo 1% - pedali frique- 

 tro strialo subflexuoso teuaci sursum versus angulis scabris, ima basi foliato; foliis 

 culmo duplo triplove brevioribus subdislichis angusie linearibus complicalis eusifoinii- 

 curvalis rigitlis, niargine seabris, apice pungentibus, vaginis comprcssiu culis nilidis 

 atropurpureis ; capitulo lciininali depresse globoso polystachyo magniludirte et loinia 

 Armeriae marilimae; involucro pleiophyllo capitulum cingente et bracleis simdibus 

 inter spiculas interstinclis, phyllo intimo 1 — l'/ 2 - pollican foliiformi ereeto e bas 

 lata vaginante scariosa rufa in laminam anguste Jiuearem viriilcm complicatam rigidam. 



