45T 



3. Bietyopteri* plagtogrnmraa Trevis, (Synops, gener. 

 Algaiv) 



Haliseris plagiogramma Montagu. 

 Hab* Ad insulam Cubae. 



4. Blctyopteris Woodwardia Agardh (Synops Algar. 

 Scandm. p. XXL). 



Haliseris Woodwardia Agardh (Spec. Algar, T. 1. p. 



144). Fucus Woodwardia R. Brown , Turn. 



Hah. Ad boreales Novae Hollaadiae oras« 



5. Bictyopteris delieatola Lamonr. 

 Halteerte delicatula Agardh. 

 Hah* Mare AntiUarem. 



6. Bictyopteri* linearis Dear.. 



HaMeri* linearis Agardh. 

 Bab, Ad oras Americae. 



** pinnata. 



7. Sictyo pterin sen-nlata Lamoiir. 



Haliseris gerrufata Agardh. 

 Hab» Ad oras Novae Hollandiaa. 



Gen, XYH. Orthotonus Trevis. (Synops. genet. Algar. 



1842.) . 



Char. TJialJns laminaris stipitatns, flabelliformi-partUws, 

 segmentis saepe costa percnrsis, apice nnnqnam circinato- 

 revolatus, planus, solidns, continuns, mcmbranaceo ~ subcoria- 

 eens. Fulcrum radicale discoidenm, minntnm, fibris artiewla- 

 tis ramosis stnpeis vestiium. Trichophyses saepissime nnlJae. 

 — Structnra cellulosa, arcta. Stratum corticale e cellulis 

 minutis parallelipipedis, holococcodeis, in linens longitudina- 

 ls ordinate dispositis, conflatum. Stratam medullare e eel- 



amplis parallelipipedis , nunc coeloeoccodeis nunc inanibns, 



