114 THE FL0RA 0F HALIFAX. 



1862. P. gramineus. Halifax Canal. — MialVs Flora. 

 Rare, only in the canal from Halifax to Salterhebble 



Potamogeton pusillus, L.— 101. 



Native. British type. P. July-August. 

 1835. I n tne cana l a t Salterhebble. -Herb. Leyland. 

 Rare only in the canal towards Salterhebble and at 



Mytholmroyd. 



Potamogeton pectinatus, L.— 83. 



Native. British type. P. July-August. 

 Infrequent, in the canal between Halifax and Salterhebble, 

 first recorded in 1895 by H. T. Soppitt; in a mill dam at 

 West Vale. 



Zanichellia palustris, L. — 71. Horned Pondweed. 

 Native. British type. A. June-August. 

 Rare, only in the canal at Salterhebble (250 ft.) ; first 

 recorded in 1897. 



CYPERACE^. 



Eleocharis acicularis, R.Br.— 73. 



Native. English type. A. July-August. 

 1884. Var. longicaulis, in the canal between Ash-grove 



and Elland. — Herb. Gibson. 

 1844. In the Calder and Hebble Navigation Canal, near 



Halifax. — S. Gibson ; spcm. in Herb. Watson and Herb. 



Tatham ; both sub nom. var. longicaulis ; merely an 



elongated water form. — Lees' Flora. 

 Infrequent, on the edge of the canal. 



Eleocharis palustris, R.Br. — in. 



Native. British type. P. June-July. 

 1834. Todmorden canal. — Herb. Leyland. 

 1840. Sowerby Bridge. — Herb. S. King. 

 Infrequent, in ditches and boggy ground : canal side, 



Salterhebble; Stanelly Clough, Stansfield, &c. 

 [Eleocharis multicaulis, Sm. — 88. 



Unknown. British type. P. July-August. 



1867, Ogden moors.—/. Walker. Perhaps the preceding 

 species is intended.] 



Scirpus pauciflorus, Lightf. — 91. 



Native. British type. P. July-August. 



