78 
Ueptandria . 
The horse- chesnut, which recommends itself to atten- 
tion as a fine spreading tree, with large digitated 
leaves, and beautiful spikes of flowers, is a good exam- 
ple of this class and order, although the irregularity of 
the corolla may produce some difficulty to the young 
botanist. 
To the second order, Digynia, belongs Limeum, an 
African genus of plants : Under the third, Tetragynia, 
is included Saururus , or Hazard's Tail, a native of Vir- 
ginia : and the fourth order, Heptagynia, has only one 
genus. Septa s, and one species. It is a native of the 
Cape of Good Hope, and is nearly allied to the genus 
Crassula j but it is remarkable in having seven seg- 
ments in the calyx, seven petals, and seven germens. 
CLASS VIII. 
OCTAND RIA. 
The plants under this class have eight stamens, and 
they are divided into four orders. 
Order I. JVIonogynxa. 
Tropjeoeum JMajus, Greater Indian Cress. Gen. 
char . — Cal. one leafed, with a spur j petals five, un« 
equal ; berries three, dry ; leaves peltate, fivedobed. 
Native of Peru, introduced about the end of the 17th 
century, and now one of the most common, although 
•net the least splendid ornaments of the flower- garden j 
