CYPEREAE. Otperus. 



49 b - C. FUGAX. Liebm. (Mexic. Halvgr. p. 8.) Radice 

 fibrosa caespitifera ; culmis triquetris glabris striatis (1 — 

 l'/o-pollicaribus), basi foliatis ; foliis culmo subaequalibus 

 setaceis convolutis glabris curvatis; umbella pauci-(3 — -4-) 

 radiata; radiis (V: — z /i'" longis) apice 3— G-stachyis vel 

 fasciculato 5 — 8-stachyis; involucro 2 — 3-phyllo umbellam 

 superante, foliolis setaceis curvatis (1 — 2-pollicaribus), 

 margine sursum scabris ; oclireis brevibus apiculatis ; spi- 

 culis alternis subdistichis (3 — G'" longis) elongato-Ianceo- 

 latis compressis 10 — 18-floris; squamis subsquarrosis cari- 

 nato-navicularibus compressis late obovatis dorso trinerviis 

 obtusis , nervo carinali viridi infra apicem in mucronein 

 brevissimum excurrente lateribus flavo-castaneis , apice 

 margineque flavescentibus : caryopsi compressa obovata 

 obtusa apiculata castanea subtilissime punctulata squama 

 subduplo breviore ; rhacheola compresso - quadrangulari, 

 dorso caniculata foveata , marginibus anguste liyalino 

 alatis. (•) Mexico. 



49c C. LIEBMANNI. (Sleud.) Radice fibrosa ; culmo 

 trigono striato glabro (2-pollicari), basi foliato; foliis culmo 

 longioribus anguste linearibus margine tcnuissime et remote 

 scabris; umbella 5 — G-radiata ; radiis inaequalibus (sub- 

 sessilibus usque 2 / 3 '" longis) apice G — 9-stachyis; involucro 

 tetraphyllo umbellam superante, foliolis inferioribus 3" lon- 

 gis, anguste linearibus complicatis margine scabris; oclireis 

 ore obliquis bidenticulatis ; spiculis patulis spicatim dispo- 

 sitis elongato-lanceolatis utrinque acutis 2'" longis com- 

 pressis G — 8-floris basi squama minuta lanceolata acuta 

 suft'ultis ; squamis imbricatis carinato-navicularibus com- 

 pressis ovatis obtusis , infra apicem brevissime mucronatis, 

 mucrone apicem vix attingente ; carina viridi 3 — 5-nervia, 

 lateribus pallide rufescentibus margine hyalinis ; caryopsi 

 obovata lenticulari minutissima fusca subtilissime granulata 

 apiculata squama 3 — 4-plo breviore; rhacheola flexuosa 

 hyalino-alata. C. inconspicuus Liebm. 1. c. non Gennar. 

 Mexico. 



49d- C. HELVUS. Liebm. (1. c.) Culmis caespitosis 

 trigonis strictis glabris foliatis (6— 9-pollicaribus) ; foliis 

 1 — 2 culmo brevioribus planis carina margineque scabris ; 

 vaginis recte truncatis ; umbella subquadriradiata, radiis 

 interioribus sessilibus 2 — 3 patulis subpollicaribus , apice 

 ° — 12-stachyis; oclireis oblique truncatis, involucro 3- 

 phyllo radiis longiore , foliolis patentissimis subrecurvis 

 carinatis sursum margine carinaque ciliato-denticulatis, 

 longioribus 3- rarius 4 — 5-pollicaribus ; spiculis congestis 

 divergentibus elongato-ovatis compressis 11 — 24-iloris; 

 squamis carinato-navicularibus ovatis obtusis muticis dorso 

 subquinquc nerviis, carina viridi, lateribus fuscoflavescenti- 

 bus nitidis; caryopsi elliptica apiculata compressa castanea 

 Jntida subtilissime puncticulata squama duplo breviore ; 

 stylo profundissime birido vix exscrto ; rhacheola flexuosa 

 compresso-quadraugulari, latere dorsali canaliculata, foveis 

 elliptico oblongis , marginibus subcoriaceo-mombranaceis. 

 C. melanostachyus Kunth ex parte. C. ilavus Presl. sec. 

 Liebm. quoad descriptionem vix. Mexico. 



49e. C. CORRECTTS. (Steud.) Rhizomate horizontali 

 repente; culmis gracilibus triquetris striatis (1 l / 2 -pedalibus) 

 basi 2 — 3-foliatis ; foliis culmum subaoquantibus angu- tis- 

 s mie linearibus planis carinatis: carina niargineque scabris; 

 vaginis bipollicaribus punctulatis ; umbella 5 — 7-radiata, 

 radiis inaequalibus , plerisque subsessilibus , 2 — 3 patulis 

 [i — ^-pollicaribus , apice 7 — 11-spicatis; oclireis trunca- 

 tis ; involucro 3 — 4-phyllo radiis multoties longiore, foliolis 

 patentissimis angustissime linearibus planis; spiculis densis- 

 sime congestis divergentibus inaequilongis ovatis compressis 

 J — 10-floris ; squamis imbricatis carinato-navicularibus 

 ovatis obtusis muticis dorso 3-nerviis, carina viridi, lateri- 

 bus sordide stramineis, prope carinam hie illic fusco- 

 Hneolatis; caryopsi elliptica compressa acuta fiavescente 

 obsolete punctulata squama triplo breviore , stylo ad me- 



dium bifido. C. ambiguus Liebm. I.e. p. 11. (non Steud.) 

 C. melanostachys Schlecht ex parte. Mexico. 



50. C. MELANOSTACHYS. H. B. (N. gen. I. 207. 

 ex recens Liebm. 1. c. p. 13.) 



«. Robustus. Rhizomate oblique repente caespitoso; 

 culmis 6 — 8-pollicaribus crassiusculis trigonis glabris stria- 

 tis basi 2 — 4-foliatis; foliis culmum aequantibus (2 — 2 1 /-'" 

 latis) planis carinatis crassiusculis , summo apice margine- 

 que remote ciliolato-spinuloso ; vaginis laxis , ore ampliato 

 truncato : inflorescentia eapitato-congesta lobata , e radiis 

 plurimis sessilibus composita, interdum radium unnm alter- 

 umve polystachyum emittente , 1 — l l /j" longa lataque ; 

 radiis 10 — 30-stachyis saepius breviramosis : involucro 

 4 — 5-phyllo capitolum multoties superante, foliolis patenti- 

 bus inaequalibus (usque (i-pollicaribus), culmeis couformi- 

 bus ; spiculis numerosissimis dense congestis divergentibus 

 compressis elongato-ovatis (4 — 5'" longis) 12 — 18-floris; 

 squamis imbricatis carinato-navicularibus concavis muticis, 

 dorso 5-nerviis, carina sursum viridi acuta , deorsum fusee- 

 scente plana, lateribus variogatis e castaneo-flavo fuscis 

 castaneo-punctulatis ; caryopsi obovato-elliptica compressa 

 apiculata subtilissime lineolato punctulata nigricante opaca 

 squama i /z — '/i breviore ; rhacheola flexuosa 4-quetra, 

 latere dorsali foveolato. 



,9. Gracilis. Liebm. Culmis filiformibus subpedalibus 

 triquetris glabris striatis basi foliatis ; foliis culmum sub- 

 aequantibus anguste linearibus tenuibus: inflorescentia 

 eapitato-congesta e radiis pluribus sessilibus 4 — 6-stachyis 

 composita (magnitudine nucis avellanae ) ; involucro tri- 

 phyllo capitulo multoties longiore, foliolis anguste linearibus 

 longioribus 4 — 5-pollicaribus; spiculis densissime congestis 

 elongato ovatis compressis 10 — 18-floris; squamarum late- 

 ribus nigro-castaneis caeterum cum forma typica conformi- 

 bus. Mexico. 



A Kunthio C. melanostachyus II. Ti. ita cxpositur: Radico fibrosa; 

 culmis caespitosis adscendentiuus (.i — (i-pollicaribus) triquetris basi 

 foliatis; foliis planis linearibus glabris culmo brevioribus; umbella 



5 8-radiata conforta , radiis brevissimis ; umbellulis 4 — 6-stachyis; 



involucro sub-4-phyllo umbellam multo superante ; spiculis ovato- 

 lanceolatis acutis sessilibus 11 — li-rloris ; s(iuamis ovatis obtusis 

 muticis carinato-navicularibus dorso sub-5-nerviis olivaceis et croceo- 

 puncticulatis , lateribus nijtro- vel snuiruineo-castaneis , carina viridi, 

 nitidis; achenio ovato-oblongo lateribus compresso apicato punctulato 

 late castaneo nitidulo squama dimidia breviore. C. variepatus //. B. 1. c. 



51. C. PICEUS. Liebm. (I.e. p. 12.) Culmo subpedali 

 trigono glabro striato, basi 1— 2-fuliato ; foliis culmo bre- 

 vioribus angustissime linearibus planis , sursum carina 

 niargineque scabris caeterum glaberrimis ; umbella 4- 

 radiata, radiis 1 — 1 '/--pollicaribus, medio subsessili, apice 

 3 — 5-stachyis ; oclireis truncatis ; involucro 2 — 3-phyllo 

 umbella longiore ; foliolis inaequalibus infimo 3 — 4-polli- 

 cari , angustissime linearibus , carina niargineque scabris ; 

 spiculis remotiusculis distichis oblongis compressis 10 — 12- 

 fioris, 3'" longis; squamis carinato-navicularibus concavis 

 imbricatis ovatis obtusis muticis, dorso 3— 5-nerviis, carina 

 viridi, lateribus variegatis castaneo-fuscis margine flavidis ; 

 caryopsi obovato-subglobosa apiculata e caesio-nigricate 

 squama duplo breviore ; rhacheola flexuosa compresso- 

 quadraugulari, marginibus subcoriaceo-membranaceis. C. 

 melanostachyus Autor ex parte. Mexico. 



52. C. SQUALIDUS. Liebm. (1. c. 11.) Dense caespi- 

 tosus; culmis 4— 7-pollicaribus gracilibus glabris striatis 

 trigonis basi 1— 2-foliatis ; foliis culmo brevioribus anguste 

 linearibus margine scabris ; vaginis subpollicaribus basi 

 rubescentibus ore obliquis; umbella 2 — 3-radiata, radiis 

 valde inaequalibus modo subsessilibus modo i l : i — 3 / 4 "longis, 



a pj ce 3 5-stachyis, involucro 2— 3-phyllo umbellam 



superante, foliolis anguste linearibus complicatis (l'/j — 2 " 

 longis) margine scabris ; oclireis truncatis ; spiculis diver- 

 gentibus remotiusculis compressis oblongis , 20 — 35-floris 

 basi bractea minuta subulata suffultis ; squamis compressis 

 imbricatis deciduis navicularibus ovatis obtusis, carina lata 



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