Icosandricu 
103 
Mesembryanthemum. Gen. char. — Cal. five-cleft, 
petals numerous, linear ; caps, fleshy, inferior, many 
seeded. 
Mesera. Dolahriforme, Hatchet-leaved Fig Mary- 
gold ; is a native of the Cape, and is easily distinguish- 
ed by the form of the leaves, of which the specific 
name is descriptive. 
Most of the species belonging to this genus are re- 
markable for the form or structure of their leaves, and 
many of them are peculiarly distinguished by the beau- 
ty and brilliancy of their flowers. Not fewer than fifty 
species, chiefly natives of the Cape, have been disco- 
vered, one of which, Mesem. Crystallinum? the ice- 
plant, is 'a well known annual. 
Spir^sa. Gen. char. — Cal. five-cleft; petals five; 
capsules superior, two valved, many seeded. 
Spir. Filipendula s Common Dropwort ; with leaves 
interruptedly pinnated, leaflets uniform, smooth, serra- 
ted ; not uncommon in dry pastures, and cultivated in 
the garden, where it varies with double flowers. 
Spir. Ulmaria, Meadow-Sweet, or Queen of the 
Meadow ; with leaves interruptedly pinnated, woolly 
underneath ; the odd leaflet large and lobed ; very 
common in moist meadows, and on the banks of rivers. 
Order III. Poeygynia. 
Rosa. Gen. char. — Cal. pitcher shaped, five-cleft, 
fleshy, contracted at the neck ; petals five ; seeds nu- 
merous, attached to the inside of the calyx. 
Ros. Spinosissima, Burnet Rose j with globular 
fruit, and smooth peduncles, stem covered with nurae- 
