. Lessons with plants. Suggestions for seeing and interpreting some of the common forms of vegetation. may pass into the other. Suggestions.—In illustration of all these remarks the pupil shouldexamine the double flowers of the gardens. Every one of theseflowers has a story to tell of transformation or evolution; and everyone is a witness that plants may be most profoundly modified byany treatment or condition which is strange to them. In particular,we may suggest a study of the common geraniums, carnations, roses,fuchsias, petunias, balsams, datura or brugmansia, violets, and tulipsand hyacin
. Lessons with plants. Suggestions for seeing and interpreting some of the common forms of vegetation. may pass into the other. Suggestions.—In illustration of all these remarks the pupil shouldexamine the double flowers of the gardens. Every one of theseflowers has a story to tell of transformation or evolution; and everyone is a witness that plants may be most profoundly modified byany treatment or condition which is strange to them. In particular,we may suggest a study of the common geraniums, carnations, roses,fuchsias, petunias, balsams, datura or brugmansia, violets, and tulipsand hyacinths. The double aquilegias (or columbines) are very inter-esting; also the double larkspurs. XXXVIII. PARTICULAR TYPES OF FLOWERS 236. The one thing which must have been moststrongly impressed upon the pupil in these obser-vations upon the flower is the fact of the greatand wide variation in forms. We have alreadyfound many obscure or disguised parts. There arestill other disguises, which will be sure to puzzlethe pupil, to a very few of which we may give atten- PABTIGULAB TYPES OF FLOWJSBS 207. Fia. sweet pea flower. tion, by way of illustration. We shall be still fur-ther impressed with the fact that, while there arecertain fundamental resemblancesin flowers, there are endless dif-ferences in details. 237. An outline of the sweetpea flower is shown in The calyx plainly has fiveparts, but the corolla evidentlyhas but four. The prominentpart is the standard or banner(also called the vexillum), shownat s. In front of it are twowings, WW. In the very front of the flower is apart which, because of its shape, is known as thekeel, h. This pea-like type of corolla (which the pupil will recall in thebeans, clover, locusts,and the like) has beenlikened to a butterfly inshape; and such flow-ers are therefore said tobe papilionaceous (Latinpapilio, a butterfly). 238. Searching, now,for the essential organs,we find a structure like Fig. 202, There are tenstamens, nine o
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Keywords: ., bookauthorbai, bookcentury1900, bookdecade1900, booksubjectbotany
