1028 poLYGONEiE. Polygonum, 



angustata. Spicse abbrevialse ovatse. — P. bistortoides Boiss. Diagn. 

 Ser. I, 5, p. 46. — P. confusum Meisn. — P. Bistorta var. capita' 

 tim C. Koch Linn. XIX. 



Hab. in Olympo Bithyno et Tmolo Lydise (Boissl), monte Anemas Lycaoniae 

 (Heldr!), montibus Berytdagh et Aslandagh (Haussk! Bal!), Tauro Gilicico 

 (Ky! Bal!), monte Elvend Persise (Haussk!). 



Ar. Geogr. Montes totius Europae bor. et medise ad Hispaniam borealem et 

 Italiam mediam usque, Sibiria, regio Himalaica, America borealis. 



Sect. n. Persicaria. 



3. P. amphibium (L. Sp. 517) perenne, radice repenle, foliis 

 oblongis vel lanceolatis, spicis lermiiialibus solitariis pedunciilalia 

 erectis oblongis densis, bracteis ovatis acutis pedicellos subsequanti- 

 bus, floribus pentandris, perigonio eglanfiuloso roseo ^. Variat. 



a natans. — Gaulis fluitans inferne radicans, ochrese imberbes, 

 folia natantia longe petiolata basi rolundato-subcordata Isevia. — Ic. 

 Fl. Dan. tab. 282. 



Q. terrestre. — Gaulia erectus, ochrese breviter ciiiatae, fob'a sub- 

 sessilia eiongato-ianceolata angustiora et acutiora interdum adpresse 

 scabrida. 



Hab. «. in aquis, |3 in huraidis probabiliter in tota parte septentrionali 

 ditionis, Byzantii et in Bithyni^ (Sibth,), Pisidia (Heldr!), Libanus (Bl!), 

 Armenia (,Calv !), Tauria, Gaucasus et Transcaucasia (Ledeb !). 



Ar. Geogr. Europa proesertim borealis et media a Scandinavift ad Rossiam, 

 in australioribus rarius, Sibiria, Ghina, Africa borealis, P. B. Spei, America 

 borealis. 



4. P. serrulatum (Lag. Gen. et Sp. 14), perenne, caiilibus 

 inferne prostratis radicantibus dein erectis elatis ramosis, ochreis 

 adpresse selosis margine ciliis saepe eis sequilongis instructis, foliis 

 subsessiiibus a basi rotundata vel subcordata anguste lineari-subian- 

 ceolatis acuminatis margine adpresse ciliatis, spicis racemo.sis filifor- 

 mibus laxiusculis erectis, floribus subhexandris, perigonio roseo 

 eglanduloso, ochreolis crebre ciliatis y.— P. salicifolium Broussonel 

 Wilid. Enum. p. 428. 



Hab. in aquis fluentibus Atticse ad Kephissum (Sprun ! Heldr. Herb. Norm. 

 790!), Cretffi (Heldrl), Syriae liltoralis ad Sidonem (Bl! Gaill!), ad Tripoli 

 (Boiss!), ^gypti ad Alexandriam (Samar!), Babylonia ad Korna (Noel). 



/3. salicifolium. — Folia sublatiora et breviora, ochrearum setaa 

 ssepe subbreviores. — P. salicifolium Del. Eg. (nomen solum). — 

 P. pseudohydropiper Salzmunn. 



Hab. in Egypto inferiore ad Damiatam (Siebl), ad Dimenete (Samai-!). 



Achenia ut in affinibus variant lenticularia et saepius triquetra. 



Ar. Geogr. Lusitania, Hispania australis et orientalis, Gallia australis, Italia, 

 Sicilia, Africa borealis, Abyssinia, India borealis, insulae Ganarienses, Madera, 

 P.B. Spei. 



