CHAEA HISPIDA. 31 



witli long acuminate often sharp points. Bracteoles 

 equalling or exceeding the anterior bract-cells. Oogonia 

 and antheridia solitary, usually produced at the four 

 lowest nodes. Oogonium c. 1000-1100 [i long (excl. cor.), 

 650-750 (i. broad ; spiral-cells showing about 13-14 

 convolutions ; coronula variable in size, c. 250-350 [i 

 broad, c. 150-250 y. high, spreading. Oospore ellipsoid- 

 obovoid, c. 700-750 (j. long (excl. cage), c. 500 [x broad, 

 showing 12-13 low ridges, prolonged downwards into a 

 cage ; 'membrane thin, flexible, translucent, light rich 

 chestnut-brown, strongly granulated with granules of 

 varying size and prominence. Antheridium c. 375- 

 500 (X in diameter. 



Habitat. — In lakes, ponds, peat pits and ditches, 

 widely distributed in England, Scotland and Ireland, 

 but not seen from Wales. 



Distribution. — England : Cornwall, W., Somerset, 

 N., Dorset, Wight, Hants, N. & S., Sussex, W.'& E., Kent, 

 W. & E., Surrey, Essex, N., Berks, Oxon, Bucks, Suflolk, 

 E. & W., Norfolk, B. & W., Cambs, Beds, Hunts, 

 Northampton, Gloucester, E., Hereford, Warwick, Salop, 

 Lines, N. & S., Leicester, Derby, Cheshire, Lanes, S., 

 Yorks, N.E. & N.W., Durham, JSTorthumberland, West- 

 moreland, Cumberland. 



Scotland* Berwick, Haddington, Perth, E., Forfar, 

 Aberdeen, N., Elgin, Easterness, Cantne, Ebudes, M., 

 Sutherland, W., Caithness, Hebrides, Orkney. 



Ireland : Kerry, S. & N., Cork, M. & E., Tipperary, 

 S., Limerick, Clare, Tipperary, N., Kilkenny, Carlow, 

 Queen's Co., Galway, S.E., W. and N.E., King's Co., 

 Kildare, Wicklow, Dubhn, Meath, Westmeath, Longford, 

 Roscommon, Mayo, E. & W., Sligo, Cavan, Louth, 

 Monaghan, Donegal, W., Armagh, Down, Londonderry. 



First record : uncertain, some of the pre-Linnean 

 records, no doubt, belong to this. There are two speci- 

 mens in Herb. Buddie. 



Outside the British Isles, C. hispida is recorded from 

 Sweden, Russia, Denmark, Belgium, Holland, Germany, 



