. 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. MORPHOLOGY OF THE LEAR 98 only, a double stipule is formed opposite to the leaf, as in the Buttonwootl. If they cohere by their inner margin, the double stipule appears in the leaf axil, as in the Pond-Aveed (Potamo- geton). The Ligule of the Grasses is generally regarded as a double axillary stipule. The leaflets of compound leaves are
. 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. MORPHOLOGY OF THE LEAR 98 only, a double stipule is formed opposite to the leaf, as in the Buttonwootl. If they cohere by their inner margin, the double stipule appears in the leaf axil, as in the Pond-Aveed (Potamo- geton). The Ligule of the Grasses is generally regarded as a double axillary stipule. The leaflets of compound leaves are sometimes furnished with little stipules, called stipels. 280. Inter-petiolar stipules occur in a few opposite-leaved tribes, as the Galium tribe. Here we find them as mere bristles in Diodia, while in Galium they look like the leaves, forming whorls. Such whorls, if complete, Avill be apparently G-leaved, consisting of two true leaves and four stipules. But the adja- cent stipules are often united, and the whorl becomes 303, Leaf of Sellnum tup muc «ith she ithin!; petiole "JDi Leif i>f PoUgonnm Pennsylvanicum with its (o) ochres dOo, I ulm ol Crass, nitn jomt (;J, leaf (/> lu'ulo u) J06, Leaf of Pear-tree, with slender stipules. 281. Stipules are a^ten fugacious, existing as scales in the bud, and falling when the leaves expand, or soon after, as in the Magnolia and Tulip-tree. 282. Nature of veins. The blade of the leaf consists of, (1) the frcane-ioorl; and (2) the tissue commonly called the^ja- renchyma. The frame-work is made up of the branching vessels of the footstalk, which are woody tubes pervading the paren- chyma, and conveying nourishment to every part. Collectively, these vessels are called vei7is, from the analogy of their functions. Vexatiox is a term denoting the manner in which the veins are divided and distributed. The several organs of venation, differ- ing from each other only in size and position, may be termed the midvein, veins, v
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectbotany, bookyear1870
