. A montane rain-forest; a contribution to the physiological plant geography of Jamaica. Plant ecology; Botany. TEANSPIEATION BEHAVIOR OP RAIN-FOREST PLANTS. 97 daily maximum of transpiration and evaporation at 12 noon, with a plateau in the curve of relative transpiration between 10 a. m. and 2 p. m., accompanied by a sharp rise in the curve of stomatal openness between 10 a. m. and 12 noon, and a less rise between 12 and 2 p. Fig. 18.—Curves for simultaneous experiments with Diplazium celtidifoUum (upper) and Asplenium alatum (lower). These experiments were carried out on the same day as
. A montane rain-forest; a contribution to the physiological plant geography of Jamaica. Plant ecology; Botany. TEANSPIEATION BEHAVIOR OP RAIN-FOREST PLANTS. 97 daily maximum of transpiration and evaporation at 12 noon, with a plateau in the curve of relative transpiration between 10 a. m. and 2 p. m., accompanied by a sharp rise in the curve of stomatal openness between 10 a. m. and 12 noon, and a less rise between 12 and 2 p. Fig. 18.—Curves for simultaneous experiments with Diplazium celtidifoUum (upper) and Asplenium alatum (lower). These experiments were carried out on the same day as those with Peperomia and Pilea (fig. 17). The curves are: transpiration (T), (E\ . /T\ —), relative transpiration (:£;), and stomatal area (S). 10' ^Hj In the afternoon, between 4 and 6 o'clock, there is a rapid fall in the relative rate, with no accompanying change in the stomatal openness; between 6 and 9 p. m., however, the two rise in company. The daily march of stomatal openness for Diplazium is extremely uniform. The transpiration of the plant followed the evaporation. 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 Shreve, Forrest, 1878-1950. Washington, D. C. , Carnegie Institution of Washington
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