. Contributions from the Botanical Laboratory of the University of Pennsylvania. Plants; Plants -- Pennsylvania. 28 Russell—Comparison of the Structure of Hybrid part. In color, in S. fiava they are yellowish membranous, with green veinings. Those of 5. purpurea are reddish, or green with a reddish margin. In S. Catesbaei the bracts are reddish with a green tip. The sepals of 5. flava are 4 cm. long by 3 cm. broad. They are ovate and greenish yellow. Stomata are frequent, and the numerous glands are massed towards the edges and tip of the sepals on the outer side. On the inner, or morphologica
. Contributions from the Botanical Laboratory of the University of Pennsylvania. Plants; Plants -- Pennsylvania. 28 Russell—Comparison of the Structure of Hybrid part. In color, in S. fiava they are yellowish membranous, with green veinings. Those of 5. purpurea are reddish, or green with a reddish margin. In S. Catesbaei the bracts are reddish with a green tip. The sepals of 5. flava are 4 cm. long by 3 cm. broad. They are ovate and greenish yellow. Stomata are frequent, and the numerous glands are massed towards the edges and tip of the sepals on the outer side. On the inner, or morphologically upper, surface the glands and stomata are less frequent than on the outer side, but distributed in the same manner. In S. purpurea the sepals are 3 cm. long, ovate as in 5. flava and red in color. Glands are not so numerous as in 5. flava, but distributed along the margins as above. The sepals of •S. Catesbaei are 4 cm. long, ovate, green tinged with rosy pink, or with red veinings. Glands and stomata are more numerous than in S. purpurea, distributed as before. The petals in 5. flava are 7-8 cm. long, with the proximal portion not wider than the distal expanded part. The expanded portion at its lower third forms a cuneate tip characteristic of 5. flava. In color the whole petal is a flavous yellow, the pig- ment being due to yellow chromoplasts. The constricted por-. Fig. 29. Outline drawings of petals of Sarracenia flowers X }i. See text for description. tion of the petal (fig. 29, b) is rolled over rather deeply. Glands and infrequent stomata are distributed alightly behind the tip of the petal, and along several of the median veins. At the region of the constriction they become very numerous. In this area too, the epidermal cells become swollen into rounded. 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 origin
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