g() Cyperaceae DC. 



cum stylo longe persistentes, postremo deciduae; fructus in- 

 dehiscentes 3-angulati, obverse pjramidati,' basi attenuati, 

 rubiginosi, lucidi, apice styli basi persistente apiculati, inter 

 angulos subexcavati, 0,05 poll. longi, sat crassi crustacei, 

 fere lapidei, semen unicum arcte includentes ; semen trigonum 

 angulis obtusis albuminosum erectum sessiie; alhumen e gra- 

 nulis globosis ope tincturae Jodii lilacinis constans, candidum, 

 copiosum; emhryo basalis immersus. — Cum praecedentibus 

 Mensibus Martio ad Majum flores fi-uctusque gerentem ob- 

 servavi 1846. 



35. CYPERUS ROTUNDUS L. 



Char. Gen. cf. Msn. Gen. 410. Endl. Gen. 1003.^-; — bracteae inferiores 

 2 — 3 yacuae. 



Char. Spec. cf. Knth. En. 11. 58. 157, sed nostra et in nervis supra 

 prominulis aculeolato-scabra; inyolucrum nunc 4 — 5-phyllum, foliola 

 nunc umbella majora ; fructus haud punctulati, an siccando tantum 

 punctulati? — C. longus L. Knth. 1. c. p. 60. 160 vix differt: caule 

 basi haud bulboso-incrassato (an semper? an pariter bulbulos emit- 

 tente?), umbella multiradiata , involucro longissimo (an semper?), 

 bracteis ellipticis; — species haecce utraque mea opinione vix se- 

 jungenda ! 



Descrpt. Herba perennis stolonifera, in hortis et ru- 

 deratis vulgatissima, sub nomine Tek\ ubique notissima, 

 hortisque valde obnoxia; caulis tenuis gracilis subterraneus 

 0,5 — 2,5 poll. longus, infra soli superficiem horizontaliter 

 percurrens (nec repens !), primo albus, vaginis aphyllis obhque 

 truncatis obsitus, apice adscendente acutissimus, nunc in tuber 

 subrotundum pisiforme, diametro 0,2 poU., aut ellipticum in- 

 crassatus 0,7 poU. longum, 0,3 poll. crassum, vaginis invo- 

 lutum et ubique fibrillas et stolones novas horizontales ra- 

 mumque imum verticalem emittens ; rami erecti nunc fertiles 

 nunc steriles, basi 4 — 10-foHati trigoni, basi fohorum vaginis 

 et vaginis 1 — 3 ajohylhs rubentibus, obhque truncatis, dein 

 marcescentibus, persistentibus reconditus; folia absque hn- 

 gula vaginis inserta, primo erecta apice nutantia, dein in flo- 

 ribundis e basi erecta patentia imoque apice versus solum 

 spectantia, anguste linearia 3-nervia, longiter acuminata, acute 



