. Botanical gazette. Plants. IQip] CRIBBS—TILIA AMERICANA 275 A very different behavior occurred at station E, where the exposure is more intense. The growth water here was found to be per cent at 2 dm. and i .054 per cent at 3 dm., but the leaves remained turgid throughout the day, and there was no visible wilting. The transpiration index at 6:00 was quite high, and rose rapidly during the morning to a maximum at 12: 00 noon. Here a saturation deficit was developed and a sudden. a AH 21L ±11 00 (f\oo 7100 $[00 9100 ro\oo ii[oo ijloo l\oo i\oo 3\oo vjoo }^oi i|oo yloo Fig. 9.—Graphs
. Botanical gazette. Plants. IQip] CRIBBS—TILIA AMERICANA 275 A very different behavior occurred at station E, where the exposure is more intense. The growth water here was found to be per cent at 2 dm. and i .054 per cent at 3 dm., but the leaves remained turgid throughout the day, and there was no visible wilting. The transpiration index at 6:00 was quite high, and rose rapidly during the morning to a maximum at 12: 00 noon. Here a saturation deficit was developed and a sudden. a AH 21L ±11 00 (f\oo 7100 $[00 9100 ro\oo ii[oo ijloo l\oo i\oo 3\oo vjoo }^oi i|oo yloo Fig. 9.—Graphs for stations A, B, and C on August 26 and station E on August II, 1918; high transpiration index occurs on open sand with afternoon saturation deficit, while indices for humus stations remain low, due to visible wilting. depression occurred until about 3:00 , which was followed by a second low mode at 4:30. This curve is a very typical one for a clear day at this position, in that there is a rapid rise in the morning to a high maximum, and a following clearly marked depression due to a saturation deficit, but no visible wilting occurs; then a second low mode in the afternoon about 4:00 , followed by a rapid dechne with the closing of the stomata in the evening. The morning maxi- mum occurs from 9: 00 to 12: 00, unless disturbed in some way by. 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 Hanover, Ind. : J. M. Coulter
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Keywords: ., bookcollectionbiodiversity, bookcollectionnyb, booksubjectplants
