. Lessons with plants. Suggestions for seeing and interpreting some of the common forms of vegetation. - Leaf-soar ofwalnut. ^ jM . ii, J. sumac. manent effect upon the tree ;the pupil must find out. He may also examinethe Tartarian honeysuckle, honey locust, and other ii 40 ZHSSOJrS WITH PLANTS common plants for accessory buds; he will findthat in some plants they are superposed (oneover the other), and in others they are collateral(or side by side). At allevents, it is certain that someplants produce more buds thanleaves. 37. The leaf-scar of the com-mon sumac (Fig. 37), the planetree (often
. Lessons with plants. Suggestions for seeing and interpreting some of the common forms of vegetation. - Leaf-soar ofwalnut. ^ jM . ii, J. sumac. manent effect upon the tree ;the pupil must find out. He may also examinethe Tartarian honeysuckle, honey locust, and other ii 40 ZHSSOJrS WITH PLANTS common plants for accessory buds; he will findthat in some plants they are superposed (oneover the other), and in others they are collateral(or side by side). At allevents, it is certain that someplants produce more buds thanleaves. 37. The leaf-scar of the com-mon sumac (Fig. 37), the planetree (often called sycamore andbuttonwood), the common lo-cust, and a few other plants,encircles the bud. If one wereto examine the twig the previousseason, he would find that thebud is concealed within the hol-lowed base of the buds may be said to becalyptrate (covered with ahood). 38. A bit of an old dahliastalk is shown in Fig. leaf-scars are prominent,in the form of a ring (for theleaves are borne on oppositesides* of the stem, and thebases of the stalks are muchFig. 39 is a stem. Fig. 38. Fig. 39. Leaf-scarsof dahlia. Leaf attach- , . jvment of a reed, allatecl) . CHABACTEBS IN WINTEB TWIGS 41 of a large reed or grass (arundo). In this casethe leaf has not fallen away at a joint, leaving ascar, but has been torn in two by the wind. Thepoint of attachment of the leaf is at the lowerend of the sheath (a). Sometimes the witheredleaf-stalk of the dahlia adheres to the stem allwinter, but this is because the plant was killed byfrost before the leaves had reachedfull maturity. These old leaf-stalksare easily pulled away, when a dis-tinct scar (as in Fig. 38) is left.
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Keywords: ., bookauthorbai, bookcentury1900, bookdecade1900, booksubjectbotany
