. A Manual of botany : being an introduction to the study of the structure, physiology, and classification of plants . Botany. 62 ANOMALOUS EXOGENOUS STEMS. Brazilian Sapindaoese, such as Paullinia pinnata (fig. 124:), Serj^nia triternata and Selloviana, there is a centsal woody mass with from three to ten small secondary ones round it. Each of the masses con- tains true pith, derived either from the cortical cellular tissue, or from the original medullary centre. Gaudichaud and Jussieu state that around these separate collections of pith there is a medullary sheath and spiral vessels. No annu
. A Manual of botany : being an introduction to the study of the structure, physiology, and classification of plants . Botany. 62 ANOMALOUS EXOGENOUS STEMS. Brazilian Sapindaoese, such as Paullinia pinnata (fig. 124:), Serj^nia triternata and Selloviana, there is a centsal woody mass with from three to ten small secondary ones round it. Each of the masses con- tains true pith, derived either from the cortical cellular tissue, or from the original medullary centre. Gaudichaud and Jussieu state that around these separate collections of pith there is a medullary sheath and spiral vessels. No annual rings have been detected in the secondary masses, but medullary rays exist usually in their outer portion (fig. 124). In these anomalous Sapindaoese, the central and. Fig. 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 Balfour, John Hutton, 1808-1884. Edinburgh : A. and C. Black
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