96 YORKSHIRE NATURALISTS* UNION. 



This is not Spondylosiuin depressum Br^b. in Kiitz. Spec. 

 Algar. p. 189; Mem, Sci. Nat. Cherbourg, IV., t. i., f. i, 1856. 

 S.E. — Skipwith Common. 



Gexus STAURASTRUM JNIeyen 1829. 



440. Staurastrum aristiferum Relfs. 

 N.W.— Mickle Fell. 



441. Staurastrum connatum (Lund) Roy & Biss. 



[Syn. .S*. dejedum var. connatwn Lund]. 

 N.E.— Strensall (W. B. Turner). 

 S.E. — Riccall Common. 



442. Staurastrum dejectum Brdb. 

 S.W.- — CuUingworth. 



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

 head. 



N.VV.— 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. S. dejectum var. apictdatuvi (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. S. 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. 



