Bacillarieae, Naviculacese, Dickieia. 309 



Species a genere removenda. 



29. Berkeleya Fusidium Grun. Diat. Hondur. n. 37, Hedwigia 1867, 

 p. 17 ad Naviculam fusiformem Grun. pertinet. 



DICKIEIA Berkeley [1844] in Kuetz. Bacill. p. 119 emend. (Etym. 

 a cl. phycologo G. Dickie), Sp. p. 109, Rabenh. Fl. Eur. Algar. I, 

 p. 264, Grun. in Bot. Centralblatt 1880, p. 1520!, De-Toni Osserv. 

 1890, p. 897, Endostauron Grun. in Bot. Centr. 1880, pag. 1519 

 (ut sectio). — Frustula illis Slauroneidis similia, valvis ellipticis 

 transverse striatis et nodulo centrali plus minus stauroneiformi- 

 dilatato, levi vel transverse striato instructa, tum intra massam ge- 

 lineam membranaceam subfoliaceam irregulariter sparsa tum intra 

 pseudothallum gelatinoso-ramosissimum congesta. 

 Obs. Genus marinum. 



Subsect. I. Eudickieia.: Frustula intra massam gelineam membranaceam fo- 

 liaceam irregulariter sparsa. Staurus Ievis. 



1. Dickieia ulvacea Berk. in Kuetz. Bacill. p. 119, Sp. p. 109, Berk. 1239 

 et Ralfs in Ann. Nat. Hist. 1845, XIV, t. IX, Rabenh. Fl. Eur. 

 Algar. I, p. 264, W. Sm. Br. Diat. II, p. 66, t. 54, f. 342, Pritch. 



Inf. p. 925, t. 15, f. 31, GrifT. et Henfr. Micr. Dict. t. 10, f. 16, 

 0'M. Ir. Diat. p. 329, t. 29, f. 14, V. H. Syn. t. 16, f. 14, Grun. 

 in B. C. 1880, pag. 1520, Navicula nidulans Breb. mscr. — Fru- 

 stulis oblongis, plerumque geminatis, utroque fine truncatis, obtu- 

 sangulis, valvis ellipticis, 25-35 » 8,5-12,5, apicibus obtuso-rotun- 

 datis, rhaphe recta, nodulo centrali (stauro) transverse marginem 

 versus extenso lineari; striis transversis subtiliter grauulatis, 14- 

 16 in 10 ix. 



Hab. in paludibus marinis litoralibus prope «Aberdeen» Scotiae 

 (Dickie!), ad littora Hibernice (0'Meara). — Pseudothallus 1-5 

 cm. altus, foliaceus, subfuscus, siccitate olivaceus, oblongus, basi sti- 

 pitatus, ambitu undulato-laciniatus. 



Subsect. II. Endostauron (Grun.): Frustula intra pseudothallum gelatinosum 

 ramosissimum sparsa. Staurus striis transversis ornatus. 



2. Dickieia crucigera, Schizonema crucigermn W. Sm. Br. Diat. II, 1240 

 p. 74, t. LVI, f. 354 et t. LVII, f. 356, Rabenh. Alg. sub n. 1062, FI. 

 Eur. Alg. I, p. 266, Grun. in B. C. 1880, p. 1519, V. H. Syn. 1. 16, f. l f 

 Stauroneis crucigera Heib. Consp. p. 88. — Pseudothallo hya- 

 lino, filiformi, ramosissimo, caespitoso; valvis anguste lanceolatis, 



