528 CYPERACEAE 



2. Ock. Wootton, Boswell. Frilford, Fl. Oxf. South Hiiiksey. 

 March am. 



4. Kennet. Burghfield. Aldermaston. 



5. Loddon. Damp heathy spot near Hurst Grove, Melvill. Near 



Wellington College, 1892, Tvfnail. Sandhurst. Ascot. Near 

 Jonldern's Ford. 

 Eecorded in Britten's Contributions (without localities) for the dis- 

 tricts M. N. and W. of Berkshire. 



S. setaceus is recorded for all the bordering counties. 



[S. Holosclioenus, Linn. Sp. PI. 49(1753), where the name is written 

 Hohscoemis, Syme, E. B. x. 61, t. 1597, is on very old authority for 

 Hants, but has not recently been found.] 



S. lacustris, Linn. Sp. PI. 48 (1753), et Herb. Bulrush. 



Top. Bot. 439. Syme, E. B. x. 63, t. 1596. Nyman, 764. Fl. Oxf. 319. 



Native. Lacustral. Rivers, canals, and ponds. Common in all the 



districts. P. July-August. 

 First record. Thames near Oxford, Sir Jos. Banks in Herb. Brit. Mus. 



1760. Ditches at Hagbourn and Blewbur3^ Mr. J. Lousley in 



EusselVs Cat. 1839. Reported as frequent by Mr. G. G. Mill in 



Phyt. i. 994, 1843. 

 In the Wytham ditches and near Reading a small form occurs, and 

 in a pond in Wytham Park unusually tall specimens have been observed, 

 some being eleven feet above the water. A fertile form, about thirteen 

 inches high, with a few closely-aggregated spikelets and numerous erect 

 leaves, and a stem about the thickness of ordinary Juncus effususj was 

 found on mud dredged from the river near Oxford. A glaucous form 

 from the W3^tham ditches has the nut more compressed than in typical 

 lacustris, but it has three stigmas, so I have placed it under this species. 

 S. lacustris is common in all the bordering counties. 



[S. Tabernaemontani, Gmel. Fl. Bad. i. loi (1805). 



S. glaucus, Sua. E. B. t. 2321 (1812). Syme, E. B. 64, t. 1597. 

 Is recorded for Surrey. Hants, and Wilts. I have made repeated search 

 for this about Marcham, but have been unable to find it there or elsewhere 

 in the county. The glaucous form alluded to under the preceding species is 

 allied to this species, which Grenier and Godron consider is only a digynous 

 var. of S. lacustris.] 



[S. CARiNATUS, Sm. E. B. t. 1983 (1809), Engl. Fl. i. 60 (not of Asa Gray), Syme, 

 E. B. X. 64, t. 1598, and S. triqueter, Linn. Mant. i. 29 (there spelled 

 triquetrous), Syme, E. B. t. 1599, recorded for Surrey, are plants which 

 grow by tidal rivers, and are scarcely to be expected so high up the 

 Thames as Old Windsor.] 



S. maritimus, Linn. Sp. PI. 51 (1753, et Herb. 



Top. Bot. 441. Syme, E. B. x. 68, t. 1601. Baxt. t. 264. Nyman, 763. 



Fl. Oxf. 319. 

 Native. Paludal. Small stream-sides. Very local. P. July-Sept. 



