736 



lis emarginatis calyce dimidio brevioribus, stylo ovario breviore, se- 

 minibus sub lente luberculatis Q. Barrel. \r. 554. P. tetraphyllum 

 L. fil. Suppl. 416. 



Hab. in ruderatis, insulse Archipelagi (Sibth.), Asia rainor prope Adalia 

 (Bourg!), Palsestina (Roth!) , ^Egyptus ad Alexandriam (Kralik!), prov. 

 Transcaucasica Talysch (Kieseritsky !) et prob. alibi. Fl. aest. 



/3. diphyllum. Folia fere omnia opposita, petala subintegra. P. te- 

 traphyllum var. Caspium G.A.M. Enum. p. 454. — Lceffllingia Cas- 

 pica Gmel. It. III, p. 340, tab. 35, fig. 4. 



Hab. ad mare Caspium prope Lenkoran (C.A.M! Hohen !). 



Ar. Geogr. Europa ; introducta fere in totum orbem terrarum. 



P. alsinefolium (Biv. Manip. Ul, p. 7 sub Haged) procumbens 

 abasi ramosum, foliis lsevibus subcarnosis quaternis et oppositis ova- 

 tis, floribus dense cymosis pentandris, pedicellis calyci subaequilon- 

 gis, sepalis ovatis mucronatis, petalis oblongis subintegris calyce du- 

 plo brevioribus , stylo ovario breviore, seminibus sub lente tubercu- 

 latis ©. Ic. Bocc. Sic. tab. 38. — P. tetraphyllum /3 alsinoides Gr. 

 et Godr. Fl. Fr. I, p. 606. — P. Gmelini Griseb. Spic. I, p. 214 (ex 

 descript. synonymis exclusis). 



Hab. in arenosis maritimis Atticae (Sprun!), insulae Tenos (Sart !), Ma- 

 cedoniae et Bithyniae (Griseb !), iEgypti ad Alexandriam (Cadet!). Fl. sest. 

 ineunte. 



An forma maritima praecedentis ? 



Ar. Geogr. Littora Europse meditetraneaa et AfricDe borealis. 



P. Arabicum (Boiss. Diagn. Ser. I, X, p. 43) caulibus prostra- 

 tis, foliis parvis carnosulis oppositis linearioblongis, floribus dense 

 cymosis penlandris, pedicellis calyci subaBquilongis, sepalis oblon^is 

 obtusis late scariosis, petalis oblongo - Unearibus calyci asquilongis, 

 stylo ovario duplo longiore, seminibus laevibus dorso subcanalicula- 

 tis O. 



Hab. in arenosis deserti Arabi» PetreaB (Boiss ! ), ^gyptiaco-Palaastini 

 (Ky exs. 494!). Fl. Mart. 



Caules 1-2 pollicares; pra^ter notas indicatas a prsecedente bracteis 

 acutis nec acuminatis diversum. 



* * Stipula? et bractese breves ovato-oblongae obtusiusculaB dorso herbaceae 

 scarioso-marginatse. Bractese pedicello breviores. 



P. succulentum (Del. Fl. Eg. p. 244, tab. 24, fig. 44 sub Al- 

 sine) caulibus prostratis, foliis carnosulis quaternis vel oppositis lineari- 

 oblongis" in petiolum attenualis, cymis laxis paucifloris, pedicellis 



