The induction, development, and heritability of fasciations . which theyarc extremely small. Ineach species portions orall of the leaves fall awayduring unfavorable sea-sons . The general struc-tural relations of thestem do not need specialnotice; they will be ap-parent from the discus-FiG. 10—Parkhisoma microphylla: A, segment of stem sion of the chlorophyll3 mm. in diameter; ^, transverse section of woody cylinder apparatus,to show presence of chlorophyll in wood parenchyma ^^ adjoining a duct and in the medidlary rays. As in all the Young branches, ,other sketches the stippling indicate
The induction, development, and heritability of fasciations . which theyarc extremely small. Ineach species portions orall of the leaves fall awayduring unfavorable sea-sons . The general struc-tural relations of thestem do not need specialnotice; they will be ap-parent from the discus-FiG. 10—Parkhisoma microphylla: A, segment of stem sion of the chlorophyll3 mm. in diameter; ^, transverse section of woody cylinder apparatus,to show presence of chlorophyll in wood parenchyma ^^ adjoining a duct and in the medidlary rays. As in all the Young branches, ,other sketches the stippling indicates the presence of ^^ose 1 cm. or less^ ^^^^ ^ in diameter, are abun- dantly supplied with chlorophyll, which is distributed in characteristic fash-ion from epidermis to pith. In general terms this distribution may bedefined as follows: It occurs in the cortex as three separate bands concen-trically placed in the medullary rays of cortex and of wood, in certain ofthe wood parenchyma, and in the pith. This is the maximum chlorophyll o M 111 i^o-o 0(DOobcpo. o 24 TOPOGRAPHY OF CHLOROPHYLL APPARATUS IN DESERT PLANTS.
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Keywords: ., bookcentury1900, bookdecade1900, bookpublisher, booksubjectplants
