56 FLOWERS OF THE BOGS AND MARSHES 



K. Kent; in Anglia not in Bedford; in the Severn province only in 



Worcester, Warwick, Stafford, Salop; in S. Wales it grows only in 



Glamorgan and Pembroke; in N. 

 Wales in Carnarvon, Flint, Angle- 

 sea; in the Trent province in 

 Lines; Chester in the Mersey pro- 

 vince; in the H umber generally, 

 except in N.W. Yorks; in the Tyne 

 province, except in Northumber- 

 land ; in the Lakes province, except 

 in the Isle of Man; W. Lowlands, 

 except in Renfrew and Lanark; in 

 Berwick in E. Lowlands; Forfar 

 in E. Highlands; in the W. High- 

 lands it does not occur in Main 

 Argyle, Dumbarton; W. Ross and 

 W. Sutherland in N. Highlands. 

 It is local in England from the 

 Border southward. It is found 

 also in Ireland. 



Prickly Twig Rush is a char- 

 acteristic bog plant which grows 

 especially in lowland districts near 

 the sea, and most uniformly in E. 

 Anglia. 



The first Greek name suggests 

 (as does the English one) the rigid 

 prickly character of the head of the 

 plant. It has rounded stems, which 

 are erect, stout, leafy, and smooth, 

 with leaves which are long, rigid, 

 3 -angled at the tip, rough on the 

 margin. 



The flowers are borne in a 

 dense corymb-like compound cyme, 

 axillary or terminal, which is con- 

 tracted, the flowers being collected 



in dense spikes, 3 flowers in each. One nut only is fertile. 



Prickly Twig Rush is 3 ft. in height. The flowers are in bloom in 



July and August. The plant is perennial, increased by division. 



The flowers are pollinated by the wind, bisexual, or the lower male. 



Photo. 11. Irving 



PRICKLV TWIG RUSH (Cladiurn Mariscus, Br.) 



