376 MONOGRAPHIA ONAGREARUM. 



V. injeqiialia, arrecta, distantia, subsecunda. Stamina 8 (raro 6), 

 petalis sublongiora. Filamenta deorsùm réfracta, filiformi-clavata, 

 V. capillaria : 4 petalis aiiteposita alternis paulô breviora. AntherîP 

 lineari-oblongœ , paiilo suprà basin aflixse. Ovarium 4* ( rarô 3-) 

 loculare , stipitatum , v. estipitatum , costato-tetragonum (v. tri- 

 gonum), profundè 4-sulcum (sulcis ciim dissepimeiitis alternan- 

 tibiis), 4" (rarô 3-) loculare : loculis i-ovulatis, v. rare alterne 1- et 

 2-ovulatis! ovula infrà loculorum apicem suspensa. Stvlcs sfamina 

 superans , deflexo- declinatus , filiformi -clavatiis , inferné pu- 

 bescens , apice !)onnuiicpiàm ( forsan in omnibus) in discum 

 planuni sive cyathum expansiis. Stigmata brevia. Nux stipitata , 

 V. estipitata, truncata, plerumquc niuricata v. transversè rugosa , 

 tetraquetra (raro triquetra) v. subalato-tetraquetra , v. cristato- 

 tetraptera , 1-4-sperma. 



Herbse, rarô sufFruticoSîB. Folia serrafa, v. dentata, v. sinuata, v. 

 runcinata. Spicfe simplices, V. paniculatœ, terminales, v. terminales 

 axillaresque. Bracteae decidufe. Calyx roseus v. purpurascens; lim- 

 bus in alabastro obtusus, basi inflatus. Petala albida, v. carnea, 

 V. rosea : colore per anthesin mutabili. Nuces nonnullis demùm 

 reflexœ. 



Sectio I. 



Floris partes ssepissiraè numéro ternario (in singulis individtiis 

 etiam quaternario occurrunt numéro). Petala sequalia , brève 

 unguiculata. Antherae basi et apice subattenuatœ , basi Isevis- 

 simè emarginatse , apice obtusœ. Ovarium nec basi nec apice 

 attenuatum. Nux arctè sessilis , ovato-pyramidata , ad maturi- 

 tatem usquc erecta. Stylus apice in cyathura 4-lobum stigmatum 

 basin cingens expansus.— Spicœ terminales, demùm latérales , 

 simplicissimse , basi subfoliatœ. Calycis tubus ore vix amplia- 

 tus, segmentis sequilongus, ovario (semper 4-ovulato) longior. 



Petala staminibus paulo brei>iora. Nux marginato-triquetra [rarissime 

 tetraquetra) , obtuse acuminata ■• faciebus subconcavis, regulariter trans- 

 versè plicato-rugosis , medio i-costatis : costâ infernè acutè carinatâ. 



GAURA TRIPETALA Gavai». 



Gaura tripetala Cavan. le. v. 4, tab. 396, fig. i.^Gaura hexandra 



Ortega. 



Erecta, supernè fastigiato-ramosa. Caulibus ramisque subhirsutis, foliosis. 



