66G CYPERACEAE. 



CYPERUS. 



hyalinis; staminibus 2— 1 , anlbera ovato-cordata; caryopsi obovata lcnliculari minutis- 

 sima fusca subtilissime granulala npirulata , squama 3 — 4-duplo breviore; stylo vix 

 ad medium bifido; rhacheola flexuosa hyalino - aiala. — flabilnt ail S. Jose in 

 Costa rica. 



10. C. IIELVUS Liebm. 1. c. p. 9. + — Culmis caespitosis 6— 9-pollicaribus trigonis siriciis 

 glabris folialis; foliis 1—2 culmis brevioribus planis carina marginibusque scabris, va- 

 ginis recte truncalis; umbella subquadrirarliaia , radiis 2 interioribus sessilibus, 2 — 3 

 pntulis snbpollicaribus, apiee 8— 12 - staehyis; ocbreis oblique truncalis; involucro 3- 

 phvllo radiis longiore, phyllis paientissimis subrecurvis earinatis, sursum marginibus 

 carinaqne ciliato-denliculatis, longioribus 3- rarius, 4 — 5-pollicaribus; spiculis congeslis 

 divergentibus elon^ato-ovatis compressis 11 — 24-floris: squamis cnrinalo-navicularibus 

 ovatis obtusis mulicis, dorso sub-5-; ■erviis, carina viridi, lateribus fusco-flnveseenlibus 

 nitidis; staminibus 2; caryopsi ellipiica apicnlnta compressa cnstanea nilida sublilis- 

 sime punctulnta, squama duplo breviore : stylo profundissiino bifido vix exserto; rba- 

 cheola flexuosa compresso-qnndrangnlnri, latere dorsali canaliculaia. foveis elliplico- 

 oblongis. marginibus subcorioceo-membranaceis. — C. melanostachyus Knth. (cx p.) — 

 C. flavus Prsl. — Ilabitat in Mexico orientali. 



11. C. AMDIGUUS Liebm. I. c. p. 11. + — P.hizomate horizontnli repenle ; culmis l'/ 3 - 

 pedalibus gracilibus triquetris glnbris slrinlis, basi 2 — 3 - folintis; foliis culmum snb- 

 aequantibus angustissime line.iribus plnnis carinatis , cariun mnrginibusque scnbris, 

 vaginis bipollicaribus punctulatis: umbella 5— 7-radinia . rndiis innequnlibus, plerisque 

 suhsessilibus, 2—3 patulis Vo— -/ 3 poll. longis, npice 7—11 spicatis; ocbreis truncatis; 

 involucro 3— 4-pbyIlo radiis multoties longiore, pbyllis patenlisshnis angustisshne linea- 

 ribus planis, carina marginibusque scabris, longioribus 4— 5-pollicaribus; spiculis den- 

 sissime congestis divergeniibus inaequilongis ovalis compressis 9— 10-floris; squamis 

 imbricntis carinato - navicularibus ovalis obtusis muticis, dorso 3-ncrviis, carina viridi, 

 lateribus sordide slrammeis, prope carinnm bic iilic fusco - lineolatis ; staminibus 2 

 caryopsi elliptica compressa acuia ob^olcte punctulata flavescente, squama triplo bre- 

 viore; stylo bifido atl medium fisso. — C. melanostachyus Schlchtd. ej p.— Habitat in 

 Mexico (Vera Crtw, Huatusco). 



12. C. SQUALIDUS Liebm.l. c 11. |— Dense caespiiosus: culmis 4— 7-pollicaribus graci- 

 libus glabris strialis trigonis, basi 1— 2-foliatis; foLiis culmo brevioribus anguste linea- 

 ribus, margine scnbris; vaginis subpollicaribus, basi rubescenlibus, ore obliquis; um- 

 bella 2— 3-radiala, radiis valde inaequalibus, modo subsessilibus , modo '/. — -/ 3 poll. 

 longis, apice 3— 5-stachyis, rnrius solummodo 2-stachyis; involucro 2— 3-phyllo um- 

 bellam superante, pbyllis anguste lincaribus complicatis 2— lV2-pollicaribus , margine 

 scabris ; ocbreis truncatis ; spiculis divergentibus remoliusculis compressis oblongis, 

 4— 8'" longis, 20— 35-floris, basi bractea minuta subulata suffultis; squamis compressis 

 imbricalis deciduis naviculnribus ovatis obtusis, carina laia applanata 3-nervia fusco- 

 viridi, lateribus fusco - flavidis ; slaminibus 3, filamentis membranaceis hyalinis persi- 

 stentibus ; caryopsi obovata obtusa apiculata rugoso - luberculata opaca fusco-nigra, 

 squama subduplo breviore; stylo profunde bifido; rhacheola flexuosa hyalino-alata. — 

 Habitat ad S. Jose in Costn rica. 



13. C. PICEUS Liebm. 1. c. p. 12. + — Culmo subpedali gracili trigono glabro striato, bnsi 

 1— 2-foliato; folils culmo brevioribus angustissime linearibus planis. sursurn carina 

 marginibusque scabris, caeterum glaberrimis: umbella 4 : radiata, radiis 1 — lVa-pollica- 

 ribus, medio subsessili, apice 3— 5-stachyis; ochreis truncatis; involucro 2 — 3-pbyllo 

 umbella longiore , phyllis inaequalrbus, infimo 3— 4-pollicari, angustissime lineanbus. 

 rarina marginibusque scabris ; spiculis remotiusculis distichis oblongis compressis 

 10— 12-floris, 3 lin. longis ; squamis carinalo - navicularibus concnvis imbricatis ovatis 

 obtusis rnuticis. dorso 3— 5-nerviis, carina viridi, lateribus variegniis castaneo -fuscis. 

 mnrgine flnvidis : stamifiibus 3, filamentis in rbacheolae foveis persislenlibus hyalinia 



