. 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. Botany; Botany. 102 STEUCTURAL BOTANY. leaflet, and interruptedly pinnate when the leaflets are alter- nately large and small (358). 303. The number of leaflets in the pinnate leaf vanes from thirty pairs and upward (as in some Acacias), down to three, when the leaf is said to be ternate or trifoliate ; or two, becom- ing binate ; or finally even to on
. 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. Botany; Botany. 102 STEUCTURAL BOTANY. leaflet, and interruptedly pinnate when the leaflets are alter- nately large and small (358). 303. The number of leaflets in the pinnate leaf vanes from thirty pairs and upward (as in some Acacias), down to three, when the leaf is said to be ternate or trifoliate ; or two, becom- ing binate ; or finally even to one leaflet in the Lemon. Such a leaf is theoretically compound, on account of the leaflet (blade) being articulated to the Compound leaves.—359, Clematis. 360, Erigenia bulbosa. SGI. Acacia. 362, Honey-locubt 304. A hijnnnate leaf (twice pinnate) is formed when the rachis bears j^iwwoe or secondary pinnate leaves, instead of leaf- lets (361), and tripnnnate (thrice pinnate) when pinnae take the places of the leaflets of a bipinnate leaf (360). AYhen the divi- sion is still more comj^licated, the leaf is decompound. Diffei-ent degrees of division often exist in difierent parts of the same leaf, illustrating the gradual transition of leaves from simple to com- pound in all stages. The leaves of the Honey-locust and Coflee- tree (Gymnocladus) often afibrd curious and instructive exam- ples (362). 305. A biternate leaf is formed when the leaflets of a teraate leaf give place themselves to ternate leaves (359), and triternate when the leaflets of a biternate leaf again give place to ternate leaves. 306. Palmately compound. The palmate venation has. 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 Wood, Alphonso, 1810-1881. Chicago, A. S. Barnes
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectbotany, bookyear1870
