1 58 Rigidulae, 



B. Semina dorso plana, 

 a. Capsula. carpophorum bis superans. 



151. S. Ilus.soiii Boiss. 



Caulis laxus humilis e basi ramosus, hirtello-pubescens visci- 

 dus; folia oblongo-lanceolata acuta pubescentia, inleriora conferta; 

 bracteac et proph. parva linearia ; flores calyce longius pedicellati, 

 pediccllo mediano fructifero saepe reflexo ; calyx clavatus, fructifer 

 infra capsulani constrictus, evenius, puberulus, dentibus lanceola- 

 tis aeuminatis albo-marginatis ciliatis ; petala flavida, unguibus 

 paullum exsertis, linearia bifida lobis angustis , appeiidicibus den- 

 ticulatis ; Capsula ovata ; semina quinqueseriatim granulata. 



— S. Hussoni Boiss ! diagn. I, S, 76. 



Hab. in arenosis ad Wadi Sannur deserti Arabico-Aegyptiaci (Husson!) 



b. Capsula carpophorum aequans vel paullum superans. 



152. S. rigiflula Sibth. et Sm. 



Caulis tenuissimus erectus, e basi divaricatim ramosus, breviter 

 puberulus superne viscidus ; folia oblongo-linearia , superiora linea- 

 ria acuta; bracteae et proph. ovato-lanceolata acuta albo-marginata 

 ciliata; flores calyce longius pedicellati; calyx elongato-clavatus, 

 umbilicatus, glaber, nervis rubris superne anastomosantibus , den- 

 tibus ovatis obtusis apiculatis albo-marginatis ciliolatis; petala ru- 

 bella, unguibus exsertis, bipartita lobis oblongis, appendicibus 

 binis quadratis denticulatis ; Capsula ovata ; semina seriatim granu- 

 lata. 



— S. rigidula Sibth. et Sm. prodr. I. 299; non L. neque Heldr. pl. Tayg. 

 S. bicolor Friv.! exs. ; iion Thore. 



Ic. Fl.graeca 4.30! 



Hab. in aridissimis et arenosis Graeciae ad basin montis Hymetti pr. Athenas 

 (Auch.!, Sprun !, al.!), in maritimis Isthmi Corinthiaci (Heldr.!), in reg. inf. 

 montis Malevo Laconiae (Sprun.!; ; in ins. Greta (Friv.!), et Rhodo (Heden- 

 borg !) 



153. S. echiiiosperma Boiss. 



Caulis laxus e basi ramosus, scabriusculus superne viscidus ; 

 folia linearia acutiuscula superiora subulata, ad nodos saepe confer- 

 ta; bracteae ovato-lanceolatae acutaealbo-marginatae ciliatae; flores 

 calyce longius pedicellati; calyx elongato-clavatus ad basin attenua- 

 tus haud umbilicatus , nervis nigris rubellisve superne anastomo- 

 santibus, dentibus ovatis acutis ciliatis ; petala alba subtus rubello- 

 venosa , unguibus longe exsertis, bifida lobis oblongis, appendici- 

 bus binis fimbriatis ; Capsula oblonga ; semina dorso quadriseriatim 

 echinata. 



