. A textbook of botany for colleges and universities ... Botany. ^^ a tendril that has not come in contact with a support; 1024, a diagrammatic cross section of a tendril that has J rp, ., . come in contact with a support; note the larger size of the ^ ' ^ tendril, the increased development of the chief mechanical results, though ire- strand (w), and the development of accessory mechanical quently tested, have not strands (w'); o, vascular tracts; 1025, a portion of the , z: J -ii. mechanical strand of 1023, highly magnified, showing been confirmed, either ,, , .. n .u- i ⢠a .â t .v, ' colle
. A textbook of botany for colleges and universities ... Botany. ^^ a tendril that has not come in contact with a support; 1024, a diagrammatic cross section of a tendril that has J rp, ., . come in contact with a support; note the larger size of the ^ ' ^ tendril, the increased development of the chief mechanical results, though ire- strand (w), and the development of accessory mechanical quently tested, have not strands (w'); o, vascular tracts; 1025, a portion of the , z: J -ii. mechanical strand of 1023, highly magnified, showing been confirmed, either ,, , .. n .u- i ⢠a .â t .v, ' collenchymatic wall thickening; 1026, a portion of the in Helleborus or in other chief mechanical strand of 1024, similarly magnified; plants though it ap- "°'^ ^^^ highly thickened walls, the elements being bast ,, ^ . , rather than collenchyma. â From Haberlandt. pears that certam stems when exposed to tension for some days or weeks become somewhat stronger; furthermore, the bast fibers and hadrome elements become somewhat more numerous and have slightly thicker walls than in controls not so exposed. In many cases tension appears to cause no appreciable change. In pendent fruits (as the apple) the tension on the fruit stalk increases constantly as the fruit gains in weight, also the strength of the stalk increases from week to week, although it has been shown that the increasing pull of the fruit is not a determin- ing factor of importance. The fruitstalks of Cucurbiia, however, have more. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Coulter, John Merle, 1851-1928; Barnes, Charles Reid, 1858-1910, joint author; Cowles, Henry Chandler, 1869- joint author. New York, Cincinnati [etc] American book company
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1910
