g6 YORKSHIRE Naturalists' union. 



This is not Spondylosium depressuin Brdb. in Kiitz. Spec. 

 Algar. p. 189; M^m. Sci. Nat. Cherbourg, IV., t. i., f. i, 1856. 

 S.E. — Skipwith Common. 



Gexus-STAURASTRUM Meyen 1829. 



440. Staurastrum aristiferum Relfs. 

 N.W.— Mickle Fell. 



441. Staurastrum connatum (Lund) Roy & Biss. 



[Syn. 5. dejedum var. connatum Lund]. 

 N.E.— Slrensall (W. B. Turner). 

 S.E. — Riccall Common. 



442. Staurastrum dejectum Br^b. 

 S.W. — CuUingworth. 



Mid W. — Bramhope (J. Abbott). Malhani Tarn. Ribble- 

 head. 



N.W.— Mickle Fell. 



N.E. — Scarborough Mere. Strensall; Gormire (W.B.Turner). 

 Pilmoor, near Thirsk. 



S.E. — Riccall and Skipwith Commons. 

 Forma punctata West. 



Mid W.— Adel Bog. 



443- Staurastrum apiculatum Breb. 



[Syn. 5'. dejectum var. apiculatum (Breb.) Lund]. 

 S.W. — Cullingwoith. 

 Mid W. — Adel Bog. Ingleborough. 

 N.W. —Mickle Fell. 

 N.E. — Pilmoor, near Thirsk. 

 S.E. — Riccall Common. 



444- Staurastrum mucronatum Ralfs. 



[Syn. 5. dejectum var. mucronatum Ralfs]. 

 S.W. — CuUingworth. 

 Mid W.— Black Hill, near Settle. 

 N.W.— Mickle Fell. 

 N.E.— Pilmoor, near Thirsk. 



445- Staurastrum megacanthum Lund. 

 N.E. —Pilmoor, near Thirsk. 



S.E. — Riccall Common. 



Trans. Y.N.U., 1897 (pub. Dec. 1900). Bot. Series, Vol. 5. 



