67 



^OLTE, (Due. Megapel.) detharding et Sueeia (fries)= 



P. gracilis fries, Novit. p. 50. Summ. p. 215. 

 Ex eadem divisione, afïinis P. pusillo tenuissimo. 

 Characteres sunt: eaulis elongatus, eapillaris, tener; 

 fol. longe cuspidata, tenuia, uninervia (sicca crispa- 

 to-tortilia) ; pedunculi elongati, aequales; spiea pau- 

 ciflora , subglobosa ; fructu elliptico-globoso , pror- 

 sus ecarinato. Color caespitis exsiecati nigricans. 

 Oecurrit in stagnis marinis Scaniae, Daniae (fries) 

 et in German, bor. ? (rchb.). 



P. tidchodes cham. koch. Syn. p. 780. Habitu, 

 caule foliisque cum P, gracili con^tmi^ differtvero: 

 spica elongata, interrupta, fructu semiorbiculato (ova- 

 to-lunulato) , compresso, acute carinato. rchb. Icon. 

 XXI. 34. Oecurrit in Silesia, Berolini, in Thurin- 

 gia, Bremae, in Due. Lauenburgico, in Campinis 

 Belg. (lej.) etc. 



P. Zosteraceus fries Novit. p. 51. Ex divisione 

 P. pectinati^ a quo distinguitur: fol. inferioribus 

 latioribus, superioribus angustioribus 5-nerviis, ob- 

 tuso-mucronatis, internodiis eaulis basi compressis 

 apice incrassatis, pedunculo longissimo filiformi, fru- 

 ctu subgloboso (siceitate triearinato). rchb. Icon. XX, 

 Oecurrit in Mari Baltieo Sueciam alluente (fries), 

 Londini (babington). 



P. marinus L. (see. fries) vix koch. Syn. Ex eadem 

 ac praecedens divisione ; a P. pectinato , eui inprimis 

 affiniSj diversus: caule abbreviate, subsimplici, dense 

 et jam e basi foliis longioribus tecto; fol. setaeeis, 

 T^aginarura auriculis patulis (nee ereetis); peduucu- 



