1036 POLYGONE^. Polygonum. 



sublucidis tenuiter rugulosis ©. P. arenarium Auct. Fl. Gall. non 

 W. H. — P' Bellardi var. effasum Meisn. in d.c. Prodr. 



Hab. \i\ eultis et ruderatis Atticie (Heldrl), Macedonia (Friv.), prov. MusCh 

 Armcnin> iiiter Gumyum et Koweg 5200' (Ky. 2S8!). 



Species plurilius confinis a P. Bcllardi p'crigouio corollino, acheniis rugu- 

 losis dimidio minoribus distincta. P. arfjyrocolenm diflfert perigonio fere toto 

 herbaceo, achenio lajvissimo, P. arenarium inter omnes magis proximum 

 achenii nitore et lcevitie. Probaljiliter confusum et alibi reperiendum. 



Ar. Geogr. Gallia australis. 



26. P. aviculare (Linn. Sp. I, p. 519) annuum interdum sub- 

 perennaiis, a collo sfepius ramosum caulihus procumbentibus rarius 

 erectis ramulosis, raniulis tola longitudine foliosis, internodiis elon- 

 galis, ochreis internodio brevioribus basi fuscis 6-8-nerviis snperne 

 hyalinis demnm laceris, foliis ellipticis vel lanceolatis vcnosis planis, 

 floribus 3-5-fIoris axillaribus pedicellis brevissimis suffultis, peri- 

 gonio herbaceo, achejiiis rugnloso-striatulis parum nitidis ©. Ic. Fl. 

 Danica, tab. 803. — Engl. bot. 1252. 



Hab. in cultis, ad vias totius ditionis a Grsecia ! ad Egyptum! AfTghaniam! 

 Belutschiam! a regione inferiori ad subalpinam. 



/3. littorale. — Rnmi crassiores, folia magis carnosa. — P. littorah 

 Lirik in Schrad. Journ. I, p. 54. 



Hab. in littoril)us maritimis Graeciai et ejus insularum (Heldr!), Ponti 

 (Tchihl), Syriffi littoralis (Bl! Gaill!), Egypti infcrioris (Sohw! Samar!). 



y. alpinim. — Caules brevissimi subsimplices erecti vel decum- 

 bentes. — P. avieu/are var. nanum Boiss. Voy. Esp. 



Hab. in regionis alpinoe liumidis vel oxsiccatis, mons Delphi Eube8e(Heldr!), 

 Taurus Cilicicus 7-80UU' (Ky. 354! Bal !). 



Eudem varietas in regione arcticA ! Alpibus ! Hispaniae australis montibus 

 occurrit. 



Obs. P. acetosum M.B. species affinis et forsan non sat distincta e Rossia, 

 australi et Sibiria erronee in regione Caucasica et AtTghanid indicatur. 



Ar. Geogr. Totus orbis terrarum. 



§ 2. Perennia. 



27. P. equisetiforme (Sibth. et Sm. FI. Graec. I, p. 266, tab. 

 364) perenne, caulibus e rhizomate indurato lignoso-incrassato longis 

 decumbentibus durls inferne foliosis internodiis elongatis, ochreis 

 fuscis multinerviis apice capillaceo-laceris, foliis subsessilibus oblongis 

 et oblongo-Ianceolatis acutis margine crispulis. floralibus anguste 

 linearibus flores aBquantibus vel vix superantibus, floribus in racemos 

 terminales laxos elongatos vel conferlos abbreviatos disposilis 2-3-nis 

 pedicellis eis fequilongis suffultis, acheiiio nitido ^. P. eqiiisetiforme 

 V. Grwcmi Meisn. Prodr. p. 86. — P. controversum Guss. Prodr. I, 

 p. 472. — P. Ehrenhergii Meisn. d.c. Prodr. XIV, p. 86. 



