. A manual of structural botany; an introductory textbook for students of science and pharmacy. Plant morphology. THE COMPOUND LEAF 191 they are pinnately or palmately compound. The question is to be decided in accordance with the point at which disarticulation of the terminal leaflet occurs. If palmate, the base of the blade must be the point at which the three petioles separate, so that when disarticulation occurs no rachis will remain extending beyond the point of attachment of the two lateral leaflets (Fig. 548). In the pinnate form such a rachis. Fig. 552. Triternate leaf. 553. Pedate lea
. A manual of structural botany; an introductory textbook for students of science and pharmacy. Plant morphology. THE COMPOUND LEAF 191 they are pinnately or palmately compound. The question is to be decided in accordance with the point at which disarticulation of the terminal leaflet occurs. If palmate, the base of the blade must be the point at which the three petioles separate, so that when disarticulation occurs no rachis will remain extending beyond the point of attachment of the two lateral leaflets (Fig. 548). In the pinnate form such a rachis. Fig. 552. Triternate leaf. 553. Pedate leaf (violet). 554. Pari-pinnate leaflet of Geditschia. 555. Impari-pinnate leaf of rose. 556. Millifoliolate loaf of Achilldea 557. Interruptedly-pinnate leaf of Aqrimonia. 658. Runcinate leaf of dandelion. 559. Lyrate leaf of barbarea. (Fig. 549, a), although frequently very short, does exist. In the family Legiiminosae, the question of whether a leaf is pinnately or palmately trifoliolate is of fundamental importance in classification. A three-parted palmately compound or divided leaf is called Ternate^ a five-parted one Qujaate, a seven-parted one geptate., A palmatifid (or palmate) leaf, with very narrow divisions, is called Pedate (Fig. 553).. 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 Rusby, Henry Hurd, 1855-. Philadelphia and New York, Lea & Febiger
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