438 GENTIANA CATESBEI. 
dle states. It differs widely, however, from that 
species in the size of its leaves, the length of its 
calyx, the open mouth of its corolla and shape of 
its segments. An imperfect figure of this plant, 
published by Catesby sixty years ago, has been 
quoted by subsequent botanists as belonging to 
G. Saponaria. It has now been very properly 
distinguished by Walter and Elliott, who have ap- 
plied to the new species the name of its earliest 
delineator. 
The genus Gentiana has a monopetalous corol- 
la ; a capsule one-celled and two-valved, with two 
longitudinal receptacles. The species Catesbwi 
has a rough stem; leaves ovate-lanceolate 3 seg. 
ments of the calyx longer than the tube ; mouth of 
the corolla open, its outer segments subacute, in- 
ner segments bifid and fimbriate. : 
This genus is placed by Linnzeus in his class 
and order Pentandria, Digynia. A part of the 
Species, however, depart from the character of 
this class, and constitute one of those instances in 
which the general rules of the arrangement are 
violated, that apparently natural genera may not 
be divided. A part of the Gentians have five sta- 
mens and a five-cleft corolla; others have four 
stamens and a four-cleft corolla; others have a 
still different number. Yet so uniform is the 
