W. WEST AND G. S. WEST : AI.GA-FLORA OF YORKSHIRE. 99 



N.W.— Mickle Fell. Lund's Fell. Mossdale Moor, Widdale 

 Fell. 



461. Staurastrum teliferum Ralfs. 



[Syn. S. polytrichum Perty var. alpinum Schmidle]. 

 S.W.— CuUingwortli. 



Mid W. — Adel Dam CW. B. Turner). Wigton Moor. 

 N.W.— Mickle Fell. Great Shunnor Fell. 

 N.E.— Strensall ! (W. B. Turner). Pilmoor, near Thirsk. 

 S.E. — Riccall and Skipwith Commons. 



462. Staurastrum gladiosum Turn. 

 Var. delicatulum var. n. 



A variety with more delicate spines, spines sometimes slightly 

 curved and fewer away from the angles. Length without spines 

 38 /J., with spines, 45/^; breadth without spines 39/i, with spines 

 49 /i J breadth of isthmus 14^1. 



Mid W. — Malham Tarn. 



The form of the cells and the number and length of the 

 spines are nearer those of S. gladiosum than any other species. 

 The semicells are more depressed than in S. teliferum and the 

 spines are longer and more delicate. 



463. Staurastrum polytrichum Perty. 



[Syn. S. Fringsheimii Reinsch]. 

 Mid W. — Cocket Moss, near Giggleswick. Cautley Spout. 

 N.E.— Strensall (W. B. Turner). 



464. Staurastrum Saxonicum Buln. 



[Syn. ? S. bullosum Benn.]. 

 S.W.— Denholme. 

 Mid W. — Near Buckden. Cam Fell. 



465. Staurastrum pilosum (Nag.) Arch. 

 S.W. — Cullingworth. 



Mid W.— Adel Dam ! (W. B. Turner). Adel Bog. Malham 

 Tarn. Bog two miles south of Clapham. 



N.W. — Cautley Spout. Mickle and Cronkley Fells. Hunter's 

 Hole, Craydale Moor (i,goo ft). 



N.E,— Strensall (W. B. Turner). Carlton Bank. 



