1109 



walls in the vicinity of the cathedral ; likewise jon the North Walls, 

 and on walls in Hyde Street. On a wall in Basingstoke, by the house 

 of Mr. May, brewer, July 12, 1850. Perhaps not uncommon in the 

 county, but lost sight of by the passing botanist from the close family 

 resemblance between it and other species of the genus, as now re- 

 stricted. I feel pretty certain of having been shown specimens at 

 Andover, by Mr. W. Whale, gathered there by himself, but have no 

 examples from thence to recur to for full assurance on the point. The 

 Salterns (near Fareham), Mr. W. L. Notcutt. Spikelets, in my Win- 

 ton specimens, in some examples three to four, in others five-flowered, 

 webless, and agreeing with the var. subcompressa* (P. subcompressa, 

 Parn.). The character of having the highest joint of the culm at or 

 near the middle of the latter, applies only to small or medium-sized 

 specimens ; in tall plants the culm is nearly erect from the base, and 

 the uppermost node near the top of the stem. The having the sheath 

 of the topmost leaf about equal in length with the leaf itself, I find a 

 much more, if not always, constant character. 



Glyceria aquatica. In ponds, ditches, rivers, streams and water- 

 meadows. This fine and most conspicuous grass is extremely abun- 

 dant and widely diffused over the whole of mainland Hants, but is 

 totally absent from the Isle of Wight, although there are many locali- 

 ties on this side of the Solent apparently congenial to its habits. t 

 Abundant about Southampton, Winton (Winnal meadows, &c), 

 Bishop's Stoke, &c. Plentiful about Petersfield, in streams and 

 ditches. In the Avon, near Ringwood, and along most other parts of 

 that river. Exceedingly abundant in wet meadows at Christchurch, 

 Sopley, Avon, Fordingbridge$ &c. In the Test, at Forton, near An- 

 dover, and at Romsey, besides innumerable other places. Titchfield 

 River, Mr. W. L. Notcutt !!! 



Glyceria Jluitans. In ponds, ditches, slow streams, and low, wet 

 places, meadows, &c. ; frequent over the county and Isle of Wight. 



Glyceria plicata. In like places with the last ; rare ? On the 

 heath near Csesar's Camp, between Farnham and Farnborough, Mr. H. 

 C. Watson in litt. ! With the characters and appearance of this 



* In those from Basingstoke some of the spikelets bore hut two florets. 



f One cause of the scarcity or absence of a great majority of aquatic or semi- 

 aquatic plants common in other districts of the county, which constitutes a local pe- 

 culiarity of the Vectian flora, is, I conceive, the impregnation of most of our standing 

 water and slow streams with iron, through the decomposition of the pyritic nodules so 

 abundant in the greensand and argillaceous strata of the island, and which metal cer- 

 tainly acts as a poison to vegetation when in excess in the soil. 



