— 2601 — 
plus minus columnari pyriformes l. in globulum congestae tunc- 
que interdum subseriatae, in ascis solitariae l. quattuer forma- 
tae.  Peritetragondia in ramulis nunc immutatis, nunc plus 
minus receptaculiformibus nidulantia, interdum nulla. 
1. Thallus ecalcareus flexilis. Sporae e fundo excipuli pyri- 
formes. Tetragonidia in receptaculis l. in. ramulis plus 
minus transformalis, utrisque. subsiliquaeformibus. 
V. ODONTHALIA Lyngb. 
Thallus planus, subcostatus, in segmenta pinnatisecta divi- 
sus. Sporocarpia subovata, e margine thalli podicellata, Sporas e 
sporophoro erectas pyriformes includentia. Peritetragonidia in 
receptaculis marginalibus ramosis, duplice serie disposita, te- 
tragonidiis triangulatim secedentibus. 
1  OboxrnaLiA pENTATA Linn. 
Thallo pinnatifido, segmentis basi angustioribus, lacinulis 
linearibus apice. dentatis. 
lucus dentatus. Linn. Syst. ed. 19. v. 2. p. 748. — Gunn. FI. 
JNorv. v. 2. p. 91. 
Sphaerocoecus dentatus £g. Syn. p. 22. 
Odonthalia dentata Lyngb. Hydr. p. 9. t. 9. 4. — blg. Scand. 
ers. m 9. 
In fundo petroso extrataeniensi, 8— 12. orgyas alto, a 
freto baltico per totam oram Sveciae occidentalem, v. c. in- 
ter Dushür et Wargó copiosissima atque pulcherrima, usque 
in sinum Christianensem Norvegiae; dein per totam hujus re- 
gni oram, v. c. extra Bergen (Roren), usque in litora Finmar- 
khiae (Gunnerus) — Toto anno, mensibus Decembris Martiique 
fructificans. 
