WEST: ADDITIONS TO THE ALG.E OF WEST YORKSHIRE. 93 



*Staurastrum reinschii Roy. Ingleborough, among Sphagnum 

 cuspidatum Ehrh. var. plumosum Schpr. 

 Staurastrum hirsutum Breb. Ingleborough, with the last. 

 Staurastrum pilosum Nag. Adel Bog ; W. and G. S. West. 

 Staurastrum teliferum Ralfs. Wigton Moor. 

 Staurastrum orbiculare Ralfs. Near Wilsden. 

 *Staurastrum pygmasum Breb. Near Keighley ; Ingleborough ; 

 Cullingworth. Rombald's Moor. Penyghent ; G. S. West. 

 Near Hainworth; T. Hebden. 

 *Staurastrum muricatum Breb. Abundant in a ditch in Nab 

 Wood, Bingley. Rombald's Moor ; Adel Bog ; W. and 

 G. S. West. " Near Wilsden. 

 Staurastrum punctulatum Breb. Heaton ; Allerton ; near 

 Keighley. Roundhay ; W. B. Turner. Rombald's Moor ; 

 Adel Bog ; W. and G. S. West. Frizinghall ; Baildon ; Peny- 

 ghent ; G. S. West. 

 *Staurastrum tricorne (Breb.). Cullingworth. 

 *Var. /3 Ralfs. Cullingworth. 

 Staurastrum polymorphum Breb. Wigton Moor. Rombald's 



Moor ; W. and G. S. West. Penyghent ; G. S. West. 

 Staurastrum gracile Ralfs. Ingleborough. 

 ^Staurastrum margaritaceum Meneg. Ingleborough. 



Fam. ll.—ZYGNEMACEA?. 

 Sub-Fam. I. — ZYGN EME/E. 



Zygnema cruciatum (Vauch.). Ingleborough. 

 *Zygnema stellinum (Vauch.) Kiitz. Eldwick. Thornton 



Moor ; W. and G. S. West. 

 *Zygnema vaucherii Ag. Var. stagnale Kirch. Baildon ; 

 W. and G. S. West. 

 Spirogyra crassa Kiitz. Manningham ; W. and G. S. West. 

 Spirogyra porticalis Vauch. Allerton. 



*Var. rivularis Hass. Baildon. 

 Spirogyra condensata Vauch. Near Bradford. 

 Spirogyra longata Vauch. Frizinghall ; Thornton Moor ; 

 W. and G. S. West. Near Keighley ; Grassington. 

 *Spirogyra tenuissima Hass. Hawksworth — a form up to 21 /x 

 in thickness, and with cells sixteen or seventeen times as long 

 as broad. 



March iS8q. 



