. A manual of Indian botany. Botany. THE LEAF SI the distichous arrangement, one cycle includes two leaves arranged in two orthostichies and one complete turn of the spiral line round the stem: the numerator of the fraction J, used to designate this phyllo- taxy, indicates the number of complete turns of the spiral round the stem to form one cycle, and the denominator the number of leaves or, what is the same, the number of orthostichies in the cycle. In the tristichous phyllotaxy, denoted by fraction J, one cycle includes three leaves arranged in three orthostichies and one complete turn of t
. A manual of Indian botany. Botany. THE LEAF SI the distichous arrangement, one cycle includes two leaves arranged in two orthostichies and one complete turn of the spiral line round the stem: the numerator of the fraction J, used to designate this phyllo- taxy, indicates the number of complete turns of the spiral round the stem to form one cycle, and the denominator the number of leaves or, what is the same, the number of orthostichies in the cycle. In the tristichous phyllotaxy, denoted by fraction J, one cycle includes three leaves arranged in three orthostichies and one complete turn of the spiral; in the pentastichous phyllotaxy, denoted by the fraction f, the cycle includes five leaves arranged in five orthostichies and two complete turns of the spiral. Fig. SI.—Part of Stem of Date Palm — Khejur (Pha- liix syh'esiris)—an example of Para- stichy. i 2 3 * T ^ figr- 52.—Piagram shewing Phyllotaxis of Leayes (long;itmlioa,l). 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 Bose, G. C. London, Blackie & Son Ltd.
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectbotany, bookyear1920
