. Contributions from the New York Botanical Garden. Plants. Fk;. 9. Cross-section of wing of Baccharis genistelloides. Fig. 10. Cross-section of leaf of Baccharis gaiistclloides. 2. In many plants, Latliynis latifoiia, L. sylvcstris and L. grmidiflonis among others, both stipules and wings occur. In such cases the wings, although just as obviously continuous with the wings of the petiole, evidently could not be hypopodia. 3. Other organs have been found that follow the leaf arrange- ment, but may not therefore be supposed to be leaf-structures — for example the thorns in some species of Riibus
. Contributions from the New York Botanical Garden. Plants. Fk;. 9. Cross-section of wing of Baccharis genistelloides. Fig. 10. Cross-section of leaf of Baccharis gaiistclloides. 2. In many plants, Latliynis latifoiia, L. sylvcstris and L. grmidiflonis among others, both stipules and wings occur. In such cases the wings, although just as obviously continuous with the wings of the petiole, evidently could not be hypopodia. 3. Other organs have been found that follow the leaf arrange- ment, but may not therefore be supposed to be leaf-structures — for example the thorns in some species of Riibus and Siiii/ax, the ridges in the stems of Urtica gracilis^, McntJia crispa and Lcptandra Virginica. For these reasons the wings are, it seems to me, rather to be regarded as lateral-vertical expansions of the stem than as " decur- rent ; Phototropism To determine the action of the plant towards light a growing shoot was fastened in a dark chamber illuminated from one side only. After fourteen days there was found to be a decided photo-. 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 New York Botanical Garden. New York : The Garden
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectplants, bookyear1899
