The American botanist and florist; including lessons in the structure, life, and growth of plants; together with a simple analytical flora, descriptive of the native and cultivated plants growing in the Atlantic division of the American union . express this cycle math-ematically by I, the numerator (1) will denote the turns or revo-lutions, the denominator (2) its leaves, and the fraction itself theangular distance between the leaves (|- of 360°). 265. The Alder cycle. In the Alder, Birch, Sedges, etc., LEAF-AREANGEMENT. 89 the cycle is not complete until the fourth leaf is reached. Thefourth
The American botanist and florist; including lessons in the structure, life, and growth of plants; together with a simple analytical flora, descriptive of the native and cultivated plants growing in the Atlantic division of the American union . express this cycle math-ematically by I, the numerator (1) will denote the turns or revo-lutions, the denominator (2) its leaves, and the fraction itself theangular distance between the leaves (|- of 360°). 265. The Alder cycle. In the Alder, Birch, Sedges, etc., LEAF-AREANGEMENT. 89 the cycle is not complete until the fourth leaf is reached. Thefourth leaf stands over the first, the fifth over the second, etc.,forming three vertical rows. Here call the cycle f; 1 denotesthe turns, 3 the leaves, and the fraction itself the angular dis-tance a of 360°). 266. The Cherry cycle. In the Cherry, Apple, Peach,Oak, Willow, etc., neither the third nor the fourth leaf, but thesixth, stands over the first; and in order to reach it the threadmakes two turns around the stem. The sixth leaf is over thefirst, the seventh over the second, etc, forming five verticalrows. Call this the -| cycle ; 2 denotes the turns, 5 the leaves inthe cycle, and the fraction itself the angular distance (f of 360°)..
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectbotany, bookyear1870
