SYSTEMA PIPER ACE ARUM, 



PiPERACEAE v. c. RICHARD in Humb. ct BotipL Nov. Gen. 

 et Sp Tom. I. p. 39. — Bartling Ordin. JVatur. p. 85. — 

 LiNDLEY Introduct. ed. alt p. 185. - Enplicheb Gener. p. 265. 



Character difterentialis. Exogenae, fibris Tascularibus in medulla 

 sparsis, ligno radiis meduUaribus latis secto, in lonas concentncas hand 

 separate. Folia integerrima. Flores nudi unibracteati. Antherae bilocu- 

 lares erectae, utrinque riraa hiantes. Ovarium unUoculare, ovulo umco 

 basilari erecto orthotropo. Semen albuminosum. Embryo inversus (ei- 

 trarius) in sacci embryonalis persistentis albuminis apici semi-immersi 

 verticc inclusus dicotyledoiieus. 



Character naturalis. 



Herbae perennantes, rarissime annuae, succulentae vel 

 carnosae, caule fere nullo vel plerumqae ramoso erecto vel 

 repente, vel frutices arboresve erecti, saepe scandentes, 

 nodoso-ramosi, fibris per meduUam sparsis, parte lignosa ra- 

 diala segmenlis ligneis a medulla ad corticem continuis. Rami 

 alterni, oppositi, raro verticillati , teretes vel angulosi. 



Folia alterna, opposita, verlicillala , petiolata rarissime 

 sessilia, integra, integerrima, succulenta, carnosa, coriacea 

 vel membranacea , glandulis oleiparis creberrimis saepe dia- 

 phano-punctala , digiti- vel penninervia , pleramque inaequila- 

 lera, glabra, pubescentia vel scabro-hirla , vernalione anlice 

 complicata , vel complicala juxlaque uervos subplicala, rarisr 



