18-2 
CLASS TRIANDRIA. 
ious female in the town of Wethersfield, Connnecticut ; since 
which time, many hats, not inferior to the best Leghorn, have 
been made from the same material. 
The Catalpa, an elegant tree with flat, cordate, or heart- 
shaped leaves, is indigenous to the Southern United States ; its 
white flowers, striped with purple, grow in panicles similar to 
the Iforse-chesnut. Only one species is found in North Ame- 
rica. 
ORDER TRIGYNIA, 
Contains the genus Piper, one species of which, the nigrum 
is the common black pepper. The cayenne pepper belongs to 
the eighth class, to the genus capsicum. The Riper genus has 
neither calyx or corolla. 
We have in the course of this lecture remarked upon the use 
of botanical terms, with the necessity of their being in one 
common language ; we have considered the few groups inta 
which the classes of Linnseus may be arranged with the names 
of all the classes, and the characters of each ; and lastly, have’ 
given a sketch of the two first classes, with some examples un- 
der each of their orders. In doing this, we have been obliged 
to pass by many plants which might have had an equal claim 
to notice, but as knowledge must be gained by the observation 
of particular cases, we have thus selected some, in order that 
you may be prepared to examine the others, with pleasure and 
advantage. 
LECTURE XXIV. 
CLASS III TRIANDRIA, AND CLASS IV TETRAIJDRIA. 
TRIANDRIA. 
MONOGYNIA. 
In the 1st order of this class we find among our common ex- 
otics, the Crocus, which is particularly interesting as being one 
of the earliest flowers of our gardens, not unfrequently blossom- 
ing in the neighbourhood of a snow bank. It has a bulbous root, 
long and narrow leaves, a spatha kind of calyx, and six petals. 
Besides the Crocus vermes or spring crocus, which often appears 
Catalpa — Recapitulation — Order Trigynia — Class third, Triandria — Class 
fourth Tetrandria — Monogynia — Crocus. 
