52 EDITH SCHWARTZ CLEMENTS 



Spruce C. 125 M P. i row, 60 M S. 65 /* 



Brook bank C. 250 n P. 2 rows, 140 M S. IIOM 



+ 125/4 +i row, +80A* (133%) + 45M69%) 



Light 33/1 ; water -f (24-28%); humidity + (0-10%) ; tem- 

 perature + (2-3). 



Thalictrum sparsiftorum 



SPRUCE SHADE: light 0.03; available water 12-16%; humidity 

 40-70% ; temperature 48-72 : diphotophyll 125 p,; epidermis wavy, 

 upper 25 p,, lower 1 5-25/1; cuticle 2 p.; chlorenchym (So/*) I close 

 row prolate palisade cells 30/1; loose subglobose to oblate sponge 

 cells. 



SHADY BROOK BANK: light o.on; available water 18-20%; hu- 

 midity 60-85% '> temperature 47-69 : diphotophyll 75 p.; epidermis 

 15 /x with funnel shaped cells; cuticle thin; chlorenchym (45 p.} I 

 loose row funnel palisade cells 25 p. ; loose oblate sponge cells. 



Spruce C. 80 M P. i row, 30 M S. 50 /* 



Brook bank C. 45 M P. i row. 25 M S. 20 M 



35 /* 5^ d7%) 30M (60%) 



Light 1/3; water + (4-6%) ; humidity + (*5-2O%) ; tempera- 

 ture (i-3). 



AWNING SHADE (seedling) : light 0.0016: diphotophyll 75 /*; epi- 

 dermis 20/1; with globose cells; cuticle thin; chlorenchym (35/1) I 

 loose row globose to funnel palisade cells 20 p.; oblate sponge cells. 



Spruce C. 80 M P. i row, 30 /* S. 50 M 



Awning C. 35 M P. i row, 20 ft- S. 15 M 



45 f- 10 A* (33%) 35 M (70%) 



Light 1/20 ; other factors practically the same except for a slight 

 probable increase in moisture due to the deeper shade. 



GRAVEL SLIDE: light i; available water 2.5-5.5%; humidity 30- 

 65%; temperature 55-76 : diphotophyll 140/1; epidermis, upper 

 25 /t with funnel shaped cells, lower I5ft; cuticle 2 p.; chlorenchym 

 (ioo/t) i close row prolate palisade cells 50^; loose irregular 

 sponge cells. 



Spruce C. 80 /* P. i row, 30 M S. 50 M 



Gravel C. IOOM P. i row, 50 n S. 50 M 



+ 20 M + 20 M o 



Light 33/1 ; water (9-5-10.5%); humidity (5-10%) ; tem- 

 perature + (4-7)- 



