PRACTICAL BOTANY. 299 



If our flower agrees with this description, then we know 

 that it is a Leontice ; and thus, having found the genus, our 

 next business will be to ascertain the species. For this pur- 

 pose, we look forward under the head marked species, until 

 we come to the same number as the genus, viz., 157, page 

 346. Here we find MONOGYNIA. 157. Leontice. Then L., 

 that is, Leontice, species thalictroides. If, now, our plant 

 agrees with this description, then we can have no doubt that 

 we have found the plant in question. If any of the abovj 

 words are unknown, look to the Glossary. HAD. signifies 

 habitat, that is, the place of growth in this case, " rocky 

 woods and mountains." 



But suppose our next specimen has six stamens and one 

 style, or pistil, but is incomplete, wanting the calyx; then, 

 of course, it belongs to the same class and order as the above, 

 but to a different division of the genera. On looking on page 

 345, this difference will be provided for, thus, 



C. Flowers naked. 



Without a spathe. or calyx: perianth single, petaloid. On 

 referring our flower to the different genera there described, 

 we shall soon find to which it belongs. Suppose this to be 

 number 166, Lilium, then we know that our specimen is a 

 lily, but as there are several species of this genus, we must 

 look forward to the same number under species. Here we 

 find, number 166, LILIUM ; and below, L. philadelphicuni, 

 and L. canadense, and on comparing our flower with these 

 descriptions we learn in a moment its name, place of growth, 

 height, and time of flowering. These examples are suffi- 

 cient to show the manner in which flowers of the first ten 

 classes are determined. This subject has already been ex- 

 plained at page 104 and onward, and to which the pupil is 

 requested to refer, instead of to a repetition of the same points 

 at this place. 



Syngenesia. But, suppose our flower, instead of having a 

 single set of stamens and pistils, is a compound flower, hav- 

 ing a cluster of florets inserted on a common head or recep- 

 tacle, thus throwing it into the class SYNGENESIA, described at 

 page 185, and to which the pupil should give careful atten- 

 tion, in order to distinguish the parts on which the classifi- 

 cation of this important portion of the vegetable kingdom 

 depends. If he has not carefully studied the parts of the 

 flowers of this class, he will at first have much difficulty in 

 convincing himself where an unknown plant belongs, and, 



