192 THE JOURNAL OF BOTANY 



Potamogeton zoster if oli us Sclium. Dykes, Han worth and near 

 Fleet Dike, near South Walsham Broad. — F. Friesii Rupr. Upton 

 J3road. 



Scirpits Tahernaemontani Gmel. Near Martham Broad. 

 Carex disticha Huds. Near Burnt-fen Broad and between 

 Horning and the Ferry. — G. terefiuscula Good. Abundant be- 

 tween Horning and the Ferry, the same district yielding C. para- 

 doxa Willd. — C. paniculata L. forma *simplicior And. Near 

 Kanworth Dike. — C. curta Good. Near Burnt-fen Broad. A 

 scarce plant over the whole county. — C. panicea L. var. *tumidula 

 Laestad. By Rollesby Broad near Ormesby St. Michael. — C. Jiava 

 L. var. lepidocarpa " Tausch. Flegg Burgh Common and near 

 Upton Broad. — G. (Ederi Retz. var. cyperoides Marss. Flegg 

 Burgh Common ; marsh near Martham Broad ; near Ranworth 

 Dike. A very distinct Sedge. 



Galamagrostis lanceolata Roth yay. pallida Lange. See Journ. 

 Bot. 1917, 254. 



Ammophila baltica Link. This we found in one or two fresh 

 stations some miles away from its well-known Caister locality, 

 occurring south of Hemsby north of Winterton as well as between 

 these two places. It grows intermingled with A. arenaria, as it 

 does at Caister, but it may be recognised, even at a distance, by 

 its long tapering panicle invariably tinged with purple. At a 

 closer view the more lanceolate glumes also readily distinguish it. 

 The former more obvious character, which was borne out in some 

 hundreds of examples examined, I do not see mentioned in Babing- 

 ton, Hooker. Hayward, etc. 



It is suggf^sted that A. halt lea is the result of the crossing of 

 A. arenaria with Galamagrostis epigeios^ but the latter plant 

 does not grow anywhere in the immediate neighbourhood and, as 

 far- as the Norfolk stations are concerned, there is nothing to 

 support this theoi'y. 



Mr. A. Craig-Christie has an interesting note upon A. haltica 

 in this Journal for 190S, p. 800, his observations bearing upon the 

 Ross Links (Northumberland) plant, and I thoroughly agree with 

 his view that it is a good species allied to, but well separated from, 

 A. arenaria and not a hj'-brid. On the Continent, however, where 

 the plant is no doubt more widely distributed than in Britain, 

 the consensus of o]nnion is seemingly in favour of its hybrid 

 origin, Lange (Danske Fl. 68, 1886) being one of the few who 

 treat it as a good species. Marsson (Fl. Neu-Yorpomm. 563, 

 1869) goes so far as to divide the " hybrid " into a. suharenaria 

 ( = ^1. haltica Link etc.) and /3. suhepigeios, an arrangement followed 

 by Aseherson and Graebner (Syn. Mittel. Fl. ii. 222, 1899) and 

 others. 



^Ghjceria d'cllnata Breb. Flegg Burgh Common. New to 

 Norfolk. — Featuca 3fi/ur>is L. Wall at Hemsby. — F. oraria Dum. 

 Abundant on the sandhills at Hemsby. 



Osmund ! regalis L. Near Filby Broad. 



Ghara connvejis Braun. Found in Martham Broad, apparently 

 a new station, the second in the county, for this pretty little 

 Chara. — G. polyncantlta Hraun. Martham Broad. — C. hispida L. 

 Upton Broad. 



