ZYGNEMACE.E. 107 



tff Sporoderm smooth. 

 Staurospexmum capucinum. Kutz. 

 Sterile cells 6 to 14 times as long as broad. 

 Zygospore quadrate, angles obtuse or truncate, sides often 

 deeply sinuate. Sporoderm even. 



SIZE. -015 X'02 mm. Zygospore -05 X '04 mm. 



De Bary Conj. p. 81. Rabh. Alg. Eur. iii. 259. 



Staurocarpus glutinosus, Hass. Alg, 177, t. 47, f. 1. 



Staurocarpus ccerulescens, Hass. Alg. t. 47, f. 2. Jenner Fl. 

 Tunb. Wells, 184. 



Mongeotia glutinosa, Hass. Ann. Nat. Hist. xxii. t. 7, f. 1. 



Staurocarpus capucinus, Hass. Ann. Nat. Hist. xii. p. 184, 

 t. 7, f. 2. 



Mougeotia ccerulescens, Eng. Fl. v. 360. Harv. Man. 141. 

 Eng. Bot. Ed. 2, t. 2506. 



Conferva ccerulescens, Eng. Bot. t. 2457. 



Agardhia ccerulescens, Gray AIT. i. 299. 



Leda capucino, Bory in Mong. & Nest. Ex. 793. 



In ditches and ponds. 



The filaments soon acquire a bluish tinge, and in drying assume a 

 purple hue. 



Plate XL1V. Jig. 1. a, sterile cells X 400; b, conjugating cells with 

 zygospores X 400. 



Staurospermum vixide. Kutz. 

 Sterile cells 10 to 20 times as long as broad. 

 Epispore quadrangular, angles truncate and replicate, sides 

 concave, smooth. 



SIZE. Cells -008 mm. Zygospore '025 mm. 



De Bary Conj. p. 81, t. 2, f. 17-18. Cleve Mon. Zyg. p. 34, 

 t. 10, f. 4-5. Eabh. Alg. Eur. iii. 260. 



Staurocarpus gracilis, Hass. Ann. Nat. Hist. xii. 185, t. 7, 

 f. 5. Hass. Alg. 179, t. 49, f. 1. Jenner Fl. Tunb. Wells, 184. 



Staurocarpus virescens, Hass. Alg. 178, t. 48, f. 2. 



Staurocarpus qffinis, Hass. Ann. Nat. Hist. xii. 185, t. 7, f. 4. 



Staurospermum franconicum, Reinsch. Algen. Fl. p. 217. 



In ditches. 



Plate XL1V. fig. 2. , sterile cells X 400; 6, conjugating cells 

 with zygospores X 400; c, development of zygospores from conjugated 

 cells X 400, after De Bary, 



Sub- Family 3. GONATONEME^:. 



Cells cylindrical, much elongated, united in threads, with 

 axile plates of chlorophyll. Agamospores produced without 

 conjugation in cells continuous with, and partitioned from the 

 mother cells. 



Q 



