42 Georg Kükenthal. — Cyperaceae-Scirpoideae-Cypereae. 



Subgen. I. Eucyperus (Griseb.) C. B. Clarke. 



Cyperus L. subgen. Eucyperus C. B. Clarke in Journ. Linn. Soc. XXI. (1884) 33. — 

 Cyperus L. sect. Eucyperus Griseb. Spicil. Fl. rumel. II. (1844) 420; Boeck. in Linnaea 

 XXXV. (1867—68) 493; Benth. et Hook. 1. c. 1044; Pax, 1. c. 107; Dalla Torre et Harms, 

 1. c. 30. — Eucyperus Rikli in Pringsheims Jahrb. XXVII. (1895) 568 (pro genere). — Bo- 

 bartia L. Fl. zeyl. (1747) 17. — Papyrus Willd. in Abhandl. Akad. Berlin 1812 (1816) 70; 

 Nees in Linnaea IX. (1835) 286. — Dichostylis F. Beauv. in Lestib. Ess. Farn. Cyp. (1819) 

 39 p. p.; Nees in Linnaea IX. (1835) 289; Palla in Englers Bot. Jahrb. X. (1888) 294 t. XI. 

 flg. 1 p. p. et in AUg. bot. Zeitschr. VI. (1900) 201; Rikli in Pringsheims Jahrb. XXVII. 

 (1895) 81. — Anosporum Nees, 1. c. 287;»Boeck. in Linnaea XXXVI. (1869—70) 410 p. p. — 

 Oalilea Pari. Fl. palerm. I. (1845) 297; Palla in Allg. bot. Zeitschr. VI. (1900) 201. — Hy- 

 droschoenus Zoll, et Moritzi, Syst. Verz. Pfl. ZoUing. (1846) 95. — Sorostachys Steud. in 

 Flora XXXIII. (1850) 229. — Atomostylis Steud. 1. c. 229. — Pterocyperus Opiz, Seznam 

 rostlin Kvgteny Ceske (1852) 80. — Borabora Steud. Syn. Cyp. (1855) 71. — Trente- 

 pohlia Boeck. in Bot. Zeit. XVI. (1858) 249. — Chlorocyperus Rikli in Pringsheims 

 Jahrb. XXVII. (1895) 563 p. p. — Duval-Jouvea Palla in Koch, Syn. ed. 3. II. (1905) 

 2555, p. p. 



Rhachilla spicularum continua. Squamae ante delapsum rhachillae a basi apicem versus 

 gradatim decidentes. Stigmata 3. Nux trigona, facie versus rhachillam spectante. 



Clavis sectionum. 



A. Spiculae in rhachi elongata spicatim dispositae Pars 1. Choristachys. 



B. Spiculae in rhachi brevissima digitatim vel fasciculatim dispositae Pars 2. Pycnostachys. 



Pars 1. Choristachys C. B. Clarke. 

 Choristachys C. B. Clarke in Hook. f. Fl. Brit. Ind. VI. (1893) 605 et in Kew Bull. 

 Add. Ser. VIII. (1908) 99. 



A. Rhachilla spicularum marginibus squamarum basi decurrentibus et demum solutis 

 conspicue alata. Stylus longus vel mediocris. 

 I. Spicae ambitu cylindricae sicut spiculae numerosae. Alae rhachillarum saepe 

 coloratae. 



a. Spiculae suberectae lineares teretes vel subteretes. Rhachilla late alata, alae 

 lanceolatae mox caducae. 



1. Caules aphylli. Folia ad vaginas sursum accrescentes reducta, harum summa 

 interdum rb laminata. Spicae late cylindricae breves. Squamae obtusae. 

 Nux oblonga vel subobovato-oblonga Sect. 1. Papyrus. 



2. Caules foliati. Spicae longe cylindricae. Squamae cuspidato-mucronatae. 

 Nux elliptica Sect. 2. Fastigiati. 



b. Spiculae demum saepius divergentes oblongo-lanceolatae compressae. Rha- 

 chilla anguste alata, alae lineares diu persistentes. Nux elliptica vel ovalis 



Sect. 3. Exaltati. 

 II. Spicae ambitu late ovatae vel turbinatae sicut spiculae haud numerosae. Alae 

 rhachillarum albo-hyalinae diu persistentes. 



a. Rhizoma horizontaliter repens vel stolones longos emittens. Squamae ± dense 

 imbricatae. 



1. Culmi validi aphylli vel vagina summa in laminam brevem producta. Bracteae 

 saepius breves. Spiculae lineares. Squamae anguste ellipticae concavae vix 

 carinatae plurinervosae marginibus involventes Sect. 4. Brevifoliati. 



2. Culmi graciliores foliati. Bracteae longae. Spiculae lineari-lanceolatae. 

 Squamae ovatae vel ovato-ellipticae marginibus haud involventes. 



§ Rhizoma repens. Stolones lignescentes. Squamae carinatae obsolete pauci- 

 nervosae Sect. 6. Rotundi. 



