II 
-Calyx deeply 4- to 6-toothed ; flowers surrounded by 
long leafy bracts. ) 
Sherar’dia arven'sis. /7e/d Madder. 
“Calyx indistinct, not toothed. 
Corolla 5-cleft (or 4-cleft in a few flowers) ; stem and 
f leaves very rough with prickles. 
Ruw’bia peregrina. Madder. 
— 
\Corolla 4-cletft. 
Corolla funnel-shaped, the lower part more or less 
elongated and tubular; plant small. ) 
Asper'ula.” 
Corolla short, without any distinct tube; Pian 
varying in size. 
Ga'lium./ 
Sect. C. FLOATING OR SUBMERGED 
AQUATICS. 
-Leaves cut into leaflets, or very narrow segments. 
Leaves with separate oval or oblong leaflets. 
( Leaves with 3 broad, oval leaflets; corolla 5-lobed, 
( hairy within. ; 
L Menyan'thes trifolia’ta. Buckbean 
Leaflets (usually) more than 3; corolla of 4 or 5 
separate petals. 
ce ie flower-stalks 3 or more together, in an ) 
i umbel.”’ UMBELLIF’ER. )} 
Petals 4; flowers not in an umbel. A 
L CRUCIF’ER. ) 
Leaves with very narrow or thread-like segments. 
Leaves (or branches) bearing minute bladders; 
( flowers irregular, coloured. ) 
L Utricularia. Bladderwort/ 
Leaves without bladders ; flowers regular. 
Leaf segments narrow but flat; corolla in one 
f . piece, 5-lobed. } 
4 Hotto’nia palus'tris. Water Violet. 
Leaf-segments thread-like; corolla of 5 5 tues 
petals. 
Ranun’culus aquatiilis. J 
~Leaves not cut into leaflets or narrow segments. 
Plant consisting of small, detached, floating fronds, 
usually with rootlets beneath. 4 
Lem’na. Duckweed. 
Plant not of this nature. 
wr 
RTF 
