PETALOIDEZ 213 
likein Juncus, and narrow. The flowers are crowded 
in dense cymes, and are regular and pollinated by 
the wind. The calyx and corolla are similar, the 
flowers green or brownish, clustered. 
The perianth is dry, scarious, or leathery, of six 
segments, sepaloid, the odd leaf in the inner whorl 
being posterior. 
There are six stamens, or the inner may be absent, 
inserted on the base of the petals and sepals. The 
anthers open laterally, and the pollen is in tetrads 
(groups of four). The ovary is superior, made up of 
three carpels. The single style is simple with three 
stigmas, brush-like in form. 
The capsule is loculicidal, three-valved, and con- 
tains many seeds, which are erect, with dense 
albumen. 
Bullocks thrive well on coarse grasses and rushes. 
Rushes are found on the margins of rivers, in bogs 
and marshes, and in wet meadows and fields con- 
verted from aquatic vegetation. ' 
COMMON RusH (Juncus effusus). 
There are a large number of different kinds of 
rushes, though they are usually looked upon by the 
person who is not an expert as one and the same. 
Most of them grow in large numbers, together 
forming an association. This one is common in all 
parts of the British Isles. In the Highlands it is 
found at an elevation of 2400 ft. 
