100 
JDodecandria . 
Euph. Helioscopia , Sun Spurge, or Wartwort ; umbel 
five-cleft, leaves serrated, wedge-shaped; annual ; flowers 
in July and August, and is very common in cultivated 
places. 
Order IV. Tbteagynia, 
To this order belong Calligonum , the species of which 
are natives of Russia and Siberia, and have been illus- 
trated by L’ Heritier, Transact. Linn. Society , Vol. I.; 
and Aponogeton , the species of which are aquatic plants, 
and natives of the Cape and of the East Indies. Two 
genera are arranged under the fifth order ; but they are 
little known, or indistinctly discriminated. 
Order VII. Dodecagynia. 
Sempervivum. Cal. inferior, twelve-parted; petals 
twelve ; caps, twelve, many seeded. 
Semper. Tectorum, Common House-leek ; leaves ci- 
liated, with spreading shoots. Perennial j flowers in 
July, and frequent on houses and walls. 
Semp. Arachnoideum , Cobweb House-leek; with 
leaves interwoven with hairs. Native of the Alps of 
Switzerland, but is not uncommon in gardens. The 
singular appearance of this plant arises from the woolly 
tops of the leaves; for as they expand, the woolly sub- 
stance is extended, and exhibits somewhat of the struc* 
ture of a cobweb. 
