56 EDITH SCHWARTZ CLEMENTS 



chlorenchym (305/4) I lactmose row prolate palisade cells, 60 /A; 

 lacunose sponge cells, closer next to palisade. (Plate VII, fig. I a.) 

 SUNNY BROOK BANK: light I ; available water 15-25% ; humidity 

 50-70%; temperature 5O-75 : diphotophyll 375 /*; chlorenchym 

 (330 /A) 2 lacunose rows prolate palisade cells 75 p.; lacunose sponge 

 cells. (Plate VII, fig. I ft.) 



Rock cleft . C. 305 A P. I row, 60 M S. 245/1* 



Brook bank C. 330 M _ P. 2 rows, 150 /* _ S. 180^ _ 

 +i row, +90/* (150%) 6s/* (26%) 



Light 20/1 ; water +(3-8%); humidity -}- 10% ; temperature 

 + 20. 



Opulaster intermedia 



HALF GRAVEL: light o.i ; available water 10% ; humidity 30- 

 65%; temperature 57-76 : diphotophyll 175 p.; epidermis, upper 

 30 p., lower 25 p.; cuticle, upper 3 p., lower 2/4; chlorenchym (120/4) 

 I close row prolate palisade cells 40 p.; loose irregular sponge cells. 



THICKET SHADE: light 0.014; available water 19%; humidity 

 40-70% ; temperature 48-72 : diphotophyll 125 p. with lower sur- 

 face undulating; cuticle thin; lower epidermis 15/1* with numerous 

 inverted funnel cells (50/4) chlorenchym (80/4) I loose row taper- 

 ing palisade cells 30 ju, ; lacunose oblate sponge cells. 



Half gravel ____ C. 120 A P. i row, 40 M S. 80 n 



Thicket ....... C. SOM _ P. i row, 30 M _ S. 50 n 



40M io/u (25%) 30M (37%) 



Light 1/7; water +9%; humidity +(5-10%); temperature 



-(3-4). 



HELIOPHYTA 



Gentiana acuta 



OPEN ASPENS : light 0.8 ; available water 9-14% ; humidity 30- 

 ,65%; temperature 5O-75 : diphotophyll 250/4; epidermis, upper 

 30 p. with cuticle 3 //. and frequent papillae, lower 20 p. with thin 

 cuticle and no papillae; chlorenchym (200/4) 2 close rows sub- 

 globose and prolate palisade cells 40 p. ; loose globose to oblong 

 sponge cells. 



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

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

 upper 25 p. with cuticle 2 p.; chlorenchym (So p.) i close row sub- 

 globose palisade cells 25 p. ; loose globose to oblong sponge cells. 



