CYPEREAE. Cypems, 



7 



4:^^- C. FUGAX. Liehm. (Mexic. Halvgr. p. 8.) Radice 

 fibrosa caespitifera ; culmis triquetris glabris striatis (1 — 

 lY^-pollicaribus), basi foliatis ; foliis culmo subaequalibus 

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

 radiata; radiis (V2 — longis) apice 3 — 6-stachyis vel 

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

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

 margine sursum scabris ; ochreis brevibus apicukitis ; spi- 

 culis alternis subdistichis (3 — Q'" lougis) elongato-lanceo- 

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

 nato-nayicularibus compressis late obovatis dorso trinerviis 

 obtusis , nervo carinaU viridi infra apicem in mucronem 

 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 hyalino 

 alatis. Mexico. 



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

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

 longioribus anguste Knearibus margine tenuissime et remote 

 scabris ; umbella 5 — 6-radiata ; radiis inaequaUbus (sub- 

 sessiUbus usque '/^"'longis) apice 6 — 9-stachyis; involucro 

 tetraphyUo umbeUam superante, foUoUs inferioribus 3" lon- 

 gis, anguste Unearibus compUcatis raargine scabris; ochreis 

 ore obUquis bidenticulatis ; spicuUs patuUs spicatim dispo- 

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

 pressis 6 — 8-floris basi squama minuta lanceolata acuta 

 suffultis ; squamis imbricatis carinato-navicularibus com- 

 pressis ovatis obtusis , infra apicem brevissime mucronatis, 

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

 lateribus paUide rufescentibus margine hyaUnis ; caryopsi 

 obovata lenticulari minutissima fusca subtiUssime granulata 

 apiculata squama 3 — 4-plo breviore; rhacheola flexuosa 

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

 Mexico. 



49d- C. HELVUS. Liehm. (I. c.) Culmis caespitosis 

 trigonis strictis glabris foUatis (6 — 9-poIUcaribus) ; foliis 

 1—2 culmo brevioribus planis carina margineque scabris ; 

 vaginis recte truncatis ; umbella subquadriradiata , radiis 

 interioribus sessilibus 2 — 3 patulis subpolUcaribus , apice 



8 — 12-stachyis ; ochreis oblique truncatis , involucro 3- 

 phyllo radus longiore , foliolis patentissimis subrecurvis 

 carinatis sursum margine carinaque ciUato-denticuIatis, 

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

 divergentibus elongato-ovatis compressis 11 — 24-floris ; 

 squamis carinato-navicularibus ovatis obtusis muticis dorso 

 subquinque nervns, carina viridi, lateribus fuscoflavescenti- 

 bus nitidis ; caryopsi eUiptica apiculata compressa castanea 

 nitida subtUissime puncticulata squama duplo breviore ; 

 stylo profundissime bifido vix exserto ; rhacheola flexuosa 

 compresso-quadrangulari, latere dorsali canaliculata, foveis 

 elliptico oblongis , marginibus subcoriaceo-membranaceis. 

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

 Liebm. quoad descriptionem vix. Mexico. 



49e. C. CORRECTUS. {Steud.) Rhizomate horizontali 

 repente; culmis gracilibus triquetris striatis (1 Vo-pedalibus) 

 basi 2 — 3-foIiatis ; foliis culmum subaequantibus angustis- 

 sime linearibus planis carinatis; carina margineque scabris; 

 vaginis bipoUicaribus punctulatis ; umbella 5 — 7-radiata, 

 radns inaequalibus, plerisque subsessilibus , 2 — 3 patuUs 

 Vs— ^/3-pollicaribus, apice 7— 11-spicatis; ochreis trunca- 

 tis ; involucro 3 — 4-phyIIo radiis multoties longiore, folioUs 

 patentissimis angustissime linearibus planis ; spicuUs densis- 

 sime congestis divergentibus inaequilongis ovatis compressis 



9 — 10-floris ; squamis imbricatis carinato-navicularibus 

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

 bus sordide stramineis , prope carinam hic iUic fusco- 

 Uneolatis ; caryopsi eUiptica compressa acuta flavescente 

 obsolete puneturata squama triplo breviore , stylo ad me- 



dium bifido. C. ambiguus Liehm. 1. c. p. 11. (non Steud.) 

 C. melanostachys Schlecht ex parte. 5tIexico. 



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

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



a. Robustus. Rhizomate oblique repente caespitoso ; 

 culmis 6 — 8-polIicaribus crassiusculis trigonis glabris stria- 

 tis basi 2 — 4-foIiatis; foliis culmum aequantibus (2 — 2^^'" 

 latis) planis carinatis crassiusculis , summo apice margine- 

 que remote ciliolato-spinuloso ; vaginis laxis, ore ampliato 

 truncato ; inflorescentia capitato-congesta lobata , e radiis 

 plurimis sessilibus composita, interdum radium unum alter- 

 umve polystachyum emittente , 1 — IV2" longa lataque ; 

 radiis 10 — 30-stachyis saepius breviraraosis ; involucro 



4 — 5-phyIlo capitulum multoties superante, foliolis patenti- 

 bus inaequalibus (usque 6-poIlicaribus), culmeis conforrai- 

 bus ; spiculis numerosissimis dense congestis divergentibus 

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

 squamis irabricatis carinato-navicularibus concavis muticis, 

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

 scente plana, lateribus variegatis e castaneo-flavo fuscis 

 castaneo-punctulatis ; caryopsi obovato-elliptica compressa 

 apiculata subtilissime lineolato punctulata nigricante opaca 

 squama V^ — V4 breviore ; rhacheola flexuosa 4-quetra, 

 latere dorsaU foveolato. 



Gracilis. lAehm. Culmis filiformibus subpedalibus 

 triquetris glabris striatis basi foliatis ; foliis culmura sub- 

 aequantibus anguste linearibus tenuibus ; inflorescentia 

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

 composita (raagnitudine nucis avellanae) ; involucro tri- 

 phyllo capitulo raultoties longiore, foliolis anguste linearibus 

 longioribus 4 — 5-pollicaribus ; spiculis densissime congestis 

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

 ribus nigro-castaneis caeterum cum forma typica conformi- 

 bus. Mexico. 



A Kunthio C melanostachyus li. B. ita expositur : Radice fibrosa ; 

 culmis caespitosis adscendentibus (o — 6-pollicaribus) triquetris basi 

 foliatis; foliis planis linearibus glabris culmo brevioribus ; umbella 



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

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

 lanceolatis acutis sessilibus 11 — 15-iioris ; squamis ovatis obtusis 

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

 puncticulatis , lateribus nig;ro- vel sanguineo-castaneis , carina viridi^ 

 nitidis; achenio ovato-oblongo lateribus compresso apicato punctulato 

 late castaneo nitidulo squama dimidia breviore. C. variegatus H. B. 1. c. 



51. C. PICEUS. Liehm. (I. c. p. 12.) Culmo subpedaU 

 trigono glabro striato , basi 1 — 2-foliato ; foUis culmo bre- 

 vioribus angustissime linearibus planis , sursum carina 

 ra.argineque scabris caeterum glaberrirais ; umbeUa 4- 

 radiata, radiis 1 — 1 V^-poIUcaribus, raedio subsessili, apice 

 3— 5-stachyis ; ochreis truncatis ; involucro 2 — 3-phyIIo 

 umbella longiore ; foUolis inaequalibus infimo 3 — 4-poIIi- 

 cari , angustissime linearibus , cariua margineque scabris; 

 spiculis remotiusculis disticliis oblongis compressis 10 — 12- 

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

 irabricatis 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- 

 quadrangulari, marginibus subcoriaceo-membranaceis. C. 

 melanostachyus Autor ex parte. Mexico. 



52. C. SQUALIDUS. Liehm. (I. c. 11.) Dense caespi- 

 tosus ; culrais 4 — 7-poIIicaribus gracilibus glabris striatis 

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

 linearibus margine scabris ; vaginis subpoIUcaribus basi 

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

 valde inaequalibus modo subsessilibus modo Vs — V^^^longis, 

 apice 3 — 5-stachyis , involucro 2— ^-phyllo umbeUam 

 superante, foliolis anguste linearibus compUcatis (IV2 — 2" 

 longis) margine scabris ; ochreis truncatis ; spiculis diver- 

 gentibus remotiusculis compressis oblongis , 20 — 35-floris 

 basi bractea minuta subulata suffultis ; squamis compressis 

 imbricatis deciduis navicularibus ovatis obtusis, carina lata 



