. Lessons with plants. Suggestions for seeing and interpreting some of the common forms of vegetation. a few of the most pronounced features ofplants, and do not necessarily represent structureswhich are typical or fundamental in the plantkingdom. Suggestions.—We will now be interested in finding, non-typioal,or, rather, undefined, methods of dehiscence. We should also lookfor gradations between simple and compound capsular fruits. Oneof the best examples is to compare the simple follicles of colum-bine (Fig. 247) or larkspur with the loosely compound pods orcapsules of the closely related nig
. Lessons with plants. Suggestions for seeing and interpreting some of the common forms of vegetation. a few of the most pronounced features ofplants, and do not necessarily represent structureswhich are typical or fundamental in the plantkingdom. Suggestions.—We will now be interested in finding, non-typioal,or, rather, undefined, methods of dehiscence. We should also lookfor gradations between simple and compound capsular fruits. Oneof the best examples is to compare the simple follicles of colum-bine (Fig. 247) or larkspur with the loosely compound pods orcapsules of the closely related nigella, or love-in-a-mist. Thenigella is an easily grown annual, and seeds may be secured fromany seedsman. It is an anomaly in the crowfoot family, becauseits follicles are grown together for the greater part of their length,making a true capsule. LI. KEY-FRUITS 319. The pupils attention has been directed tothe flowers of the maple (Fig. 211). If he wereto examine the ovary in a maple flower, he wouldfind it to be 2-lobed and 2-loculed, with two ovules KMY-FBDITS 271 in each 262 and. Pia. 262. Key ofsugar maple. Mature fruits of maples are seen in 263. Each lobe has grown into a long, winged body, with only one seed, and the twin fruit suggests a pair of saddle-bags. Dry indehiscent winged fruits are known under the general name of key-fruit or samara.
Size: 1634px × 1529px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorbai, bookcentury1900, bookdecade1900, booksubjectbotany
