. Contributions from the Botanical Laboratory, vol. 11. Botany; Botany. • E PULCHERRIMA o E. " w E. " VAR. ALBA + E. HETEROPHYLLA * E. DENTATA - •2j0. Fig 45 Fig 4 (left). Mobility curves of latex particles from the section Poin- settia; all species plotted to the same scale. Fig. 5 (right). Curves spread out to show shapes. E. dentata lies at pH , close to alba. Although the curve of E, hetero- phylla L. has somewhat the shape of the others, its LP. is at pH , showing that its latex differs greatly from that of its supposedly closest relatives. It will be noted th
. Contributions from the Botanical Laboratory, vol. 11. Botany; Botany. • E PULCHERRIMA o E. " w E. " VAR. ALBA + E. HETEROPHYLLA * E. DENTATA - •2j0. Fig 45 Fig 4 (left). Mobility curves of latex particles from the section Poin- settia; all species plotted to the same scale. Fig. 5 (right). Curves spread out to show shapes. E. dentata lies at pH , close to alba. Although the curve of E, hetero- phylla L. has somewhat the shape of the others, its LP. is at pH , showing that its latex differs greatly from that of its supposedly closest relatives. It will be noted that as the LP. increases the curves become smoother. Protein reactions are high throughout this group. Section XIX, Diacanthiurn § I. Biaculeatae a. Splcndentes.—E. splendens Bojer is in some particulars similar to the other members, at least on the basic side of the LP., although it is not in the same taxonomic group (fig. 6). Its protein reactions are high and its LP. lies at pH e, Trigonae.—E. lactea Haw. has an LP. (pH ) close to that of E. splendens and a high protein reaction, but the characteristics of its curve are not very close to those of the other members of this group, E, grandicornis 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 University of Pennsylvania. Botanical Laboratory; University of Pennsylvania. Morris Arboretum. Philadelphia : [s. n. ]
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