. A class-book of botany, designed for colleges, academies, and other seminaries ... Illustrated by a flora of the northern, middle, and western states; particularly of the United States north of the Capitol, lat. 38 3/4. Botany; Plants -- United States; Plants -- Canada. VEINS. 87 a. In our description of individual forms, we shall select only the most remark- able, leaving others for explanation in the Glossaiy. The most obvious arrangement is that which is founded upon the modes of the veining; but it should be premised that different forms of venation often give rise to the same outline. 2
. A class-book of botany, designed for colleges, academies, and other seminaries ... Illustrated by a flora of the northern, middle, and western states; particularly of the United States north of the Capitol, lat. 38 3/4. Botany; Plants -- United States; Plants -- Canada. VEINS. 87 a. In our description of individual forms, we shall select only the most remark- able, leaving others for explanation in the Glossaiy. The most obvious arrangement is that which is founded upon the modes of the veining; but it should be premised that different forms of venation often give rise to the same outline. 232. Of FEATHER-VEINED leaves, the following forms depend on the length of the veinlets in relation to each other, and to the mid vein. If the middle veinlets are longer than the rest, the leaf will be 1, Orbicular (roundish), as in Pyrola FIG. 29. — Figures of feather-veined leaves. The numbers refer to paragraphs, a, deltate leaf of Populus. 2. Elliptical (oval), as in Lespedeza prostrata; or 3. Oblong (narrow-oval). Ex. Arenaria lateriflora. If the lower veinlets are longer than the rest,the leaf will be 4. Ovate (egg-shaped), as in the MitcheUa repens, or 5. Lanceolate (lance-shaped), narrow, and tapering to each end. Ex. sweet-wilham. When the veins are most developed towards the summit of the leaf, it becomes 6. Obovate (inversely egg-shaped), as in the walnut; or 7. Spathulate (shaped hke a spathula), as in the daisy. Again, if the lowest veinlets are longest, sending ofTveinulets backwards, the leaf will be 8. Cordate (heart-shaped), like the ovate fcirm, with a hollow (sinus) at the base, as in the lilac. 9. Auriculate, having ear-shaped lobes at the base. Ex. sage. 8*. 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. Claremont, N. H. , Manufacturing Co. , S
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Keywords: ., bookcentury1800, bookdecade1840, booksubjectbotany, bookyear1848
