' :.?•.;-' 



1 52 S T U D 1 A L L b G I e i . .' - 



r 



, ■ ■ . ■ ( 



*) Indwidiin ayainica scsailki aut stipite brevissimi) • * ■• 



indistincto siiflfiilta. 



1. O. subulata mihi {Characiwn subulahim, Al. Br., 1. e. 47, 

 tab. V, G). Individua agamica cellulis sajpe gregaiiis, basi in disco 

 appianato, fuscescente, dilatata, facile confluentibus, anguste v. linea- 

 ri-suboblique ianceolatis, superne subulato-acumiiiatis, 10-20 * 4-6 /x; 

 cliromatoplioris 2-4; zoosporis 2-4 in singula cellula, 4-6 v 2 ix. Status 

 sexualis adhuc ignotus. 



2. C. gibba mihi (Characium gibburn. Al. Br., 1. e. 45, ta- 

 bul. Ili, D; Hì/drianum gihbum, Rabli., 1. e. 89). Individua aga- 

 mica cellulis globosis, subsessilibus, excentrice et brevissime stipitatis; 

 stipite basi vix dilatato, ad 8-10 ft latis, cliromatophoris 1-2 ; zoosporis 

 1-2-4 in singula cellula, breviter ovatis. Status sexualis ignotus. 



**) Individua ayaiuica plus mintis distincle stipitata. 



3. 0. minuta mihi [Characium viinutum, A. Br., 1. e. 46, ta- 

 bul. V, F). Individua agamica cellulis oblique Ianceolatis v. oblongo- 

 lanceolatis, apice acutis aut in acumen breve subobliquum, hyalinum 

 protractis, aut obtusiusculis. basi in stipitem brevem nodoso-incrassatum 

 substrato adfixis; 15-25 * 5-6 tx, chromatophoris 4-8; zoosporis 4-5 * 

 2-3 IX. Forma sexualis cellulis sphajricis, 4-6 t'- latis ; zoogainetis ovatis, 

 3 fx longis. 



4. 0. longipes mihi {Characium longipea, Ii;ibh., Alg. dee. XVIII, 

 n. 171; Al. Br. 1. e. p. 43, tab. V, D). Individua agamica cellulis sube- 

 rectis V. inclinatis,. sulioblique Ianceolatis, apice in acumen hyalinum, 

 erectuui v. subobliquum productis, stipite elongato, gracile, basi in no- 

 dulum subcoloratum incrassato; chromatophoro unico, ampio, laminae- 

 formi, parietali vel chromatophoris 2; 20-35 « 6-10 fi (stipite incluso); 

 zoosporis 2-4 in singula cellula. Status sexualis ignotus. 



