MONOCOTYLE BONES. 



Eriophorum (Cotton-grass) differs chiefly in having the perianth- 

 hairs prolonged, and forming a bunch of white, woolly hairs (Fig. 

 284 B). 



Cladium and Ehynchospora (Beak-rush) differs especially in the /<;- flowered, 

 compound spikelets which are collected into small bunches ; the latter has 

 received its name from the fact that the lowermost portion of the style remains 

 attached to the fruit as a beak. 



2. Spikelets compressed, the bracts arranged only in two rows ; 

 the other characters as in the first-mentioned. Cyperus (spikelets 

 many -flowered) ; Schosnus (Bog-rush) ; spikelets few-flowered ;. 

 S. nigricans has an open sheath. 



B. CARICE^;. UNISEXUAL FLOWERS. 



In the ( -flowers there is no trace of a carpel, and in the ? 

 no trace of a stamen. Floral-leaves in many rows. In some 

 (Selena, certain (7are#-species) , <- and $ -flowers are borne in the 

 same spikelet, the latter at the base or the reverse ; in the majority 

 each spikelet is unisexual. 



Carex (Fig. 285) has naked, most frequently monoecious flowers. 

 The $ -spikes, which are generally placed at the summit of the 

 whole compound inflorescence, are not compound ; in the axil of 

 each floral-leaf (bract) a flower is borne, consisting only of a short 



285. 



236. 



FIG. 285. Carex . ^A diagram of a male flower ; B of a female flower with 3 stigmas ; C of 

 a female flower with 2 stigmas ; D diagrammatic figure of a female flower ; E similar one of 

 the androgynous (false) spikelet of Elyna. The <J is here represented placed laterally; it 

 is terminal, according to Pax. 



FIG. 286. A Flower of Scirpus lacustris. B Seed of Carex in longitudinal section. 



axis with three stamens (Fig. 285 A). The ? -spikes are compound ; 

 in the axil of each floral-leaf is borne a very small branch (Fig. 

 285 D, a) which bears 'only one leaf, namely, a 2-keeled fore-leaf 



