ProtococcoideiB, Palmellaeeao, Trochiscia. 693 



TROCHISCIA Kuetz. [1845] Phyc. genn. p. 129, Sp. p. 162 (Etyra. 

 irochos rota), Haiisg. in Iledwigia 1888, Heft V-VI, p. 128-130, 

 Acanfhococciis Lagei'h. [1883] Bidrag till Sver. Algflora pag. 62, 

 Reinsch Ueber d. Palmellaceen. Genus Acanthococcus in Ber. d. 

 deutsch. bot. Gesellsch. in Berlin 1886, Hansg. Prodr. p. 145 nec 

 Hook. et Harv. [1845], Glochwcoccus De-Toni [1888] in Notari- 

 sia 1888, p. 457 et iti Consp. gen. Chloroph. in Notarisia III, n. 

 10, p. 452 (tiovum nomen). — Cellu]a3 globosa? vel subglobosae, mem- 

 brana crassiuscuLa, aculeolis obsita. 



Propagatio plasinatis divisione succedanea; cellula} hoc modo 

 generata3 difflueiitia membranre celluhc raaternaD liberatae ; conten- 

 tus viridis, chlorophyllaceus; cellula) perdurantes guttulas oleosas 

 continentes. * 



Obs. Species partim aquaticB, partim ad terram humidam ve- 

 getantes. Species hujus generis, obsorvantibus ipso Reinsch et cla- 

 ro C. Flahault, a zygotis Dcsinidiearum cautissirae distinguendae ^). 



Sectio i. Acaiithococcus (Lagerh.) Hansg. in HeJwigia 1888, p. 128. 



Membrana verrncis vel papillis majoribus, spinis vel spinulis laxe vel den- 

 siter dispositis obtecta. 



A. EuACANTJiococcus: membrana verruculis vel spinulis subtilioribus ob- 

 tecta. 



1. Trochlscia halophila Hansg. in Hedwigia 1888, Heft V-VI, p. 128 igse 

 et in Notarisia 1888, p. 597. — Celluiis solitariis vel 2-8, globo- 



sis, raagnitudine a^quali, 15-16 p.. diam.; membrana cellularum 

 crassa (Ys-V^ cellulae diara.) sublamellosa, hyalina, verrucis bre- 

 vibus, obtusiusculis, laxe dispositis obtecta, verrucis 10 in periphe- 

 ria cellulag; plasmate viridi, subtiliter granuloso, ad 12 u.. diam. 



Hab. in margine stagnoruni subsalsorum, una cum Chroothece 

 Richlcriand Hansg., ad aAusitz» prope ((Kralup)) Bohemioe. 



2. Trochiscia pachyderma (Reinsch) Hansg. in Hedwigia 1888, p, 128, 1537 

 Acanihococcus pachydermus Reinsch Ueb. Palraell. Acanth. 1886, 



p. 240, t. XI, f. 8-9. — • Cellulis solitariis, globosis, magnitudine 

 sequaii, 12-19 u.. diam., membrana cellularum crassa, V3 cellula3 

 diametri, verrucis latis obtusiusculis 7-20-is tum in margine cel- 

 lularum, tum in tota superficie positis instructa, sublamellosa. 



Hab. inter Vaucheriara geminatara et PalraeUas va- 

 rias in fossis prope (( Erlangen » in Bavaria Germanise. 



\) Cl"r. Reinsch Ueb. Pahnell. Acanth. 188G, p. 238, 239 



