74 EDITH SCHWARTZ CLEMENTS 



Mesa C. 285*1 P. 2 rows, 200 M S. 85 it- 



Thicket . . C. i6oM P. i row, 60 A* S. IOOM 



125 /* i row. 140 M (70%) +I5M (17%) 



Light i/So; water +(7-9%); humidity +(3-10%); tempera- 

 ture 4. 



Rudbeckia flava 



HALF GRAVEL: light i; available water 4.5-7.5%; humidity 30- 

 65%; temperature 5i-76 : diplophyll 250^; epidermis 25^; 

 cuticle 3/t; chlorenchym (200/4) 2 loose rows prolate palisade cells 

 50 /* next to upper epidermis, and i lacunose row 50 /A next to 

 lower epidermis ; central lacunose irregular and prolate cells. 



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

 humidity 60-85% > temperature 47-6o, : diphotophyll 325 p ; cuticle 

 thin; chlorenchym (275 /t) i lacunose row prolate palisade cells 75 p., 

 a second very scattered row of irregular and oblobate cells; very 

 lacunose star-shaped sponge cells. 



Half gravel C. 200 A* P. 2 rows, IOOM S. IOOM 



Thicket . . C. 275 A* P. i row, 75 A* S. 200 A* 



+ 75** i row, 25 A* (25%) + IOOA* (100%) 



Light i/ioo; water +13%; humidity +(25-30%); tempera- 

 ture (4-7). 



Erigeron speciosus 



GRAVEL: light i; available water 2.5-5.5%; humidity 30-65%; 

 temperature 55-76 : diplophyll 250/4; epidermis 25/4; cuticle 

 5/*; chlorenchym (200 /t) 1-2 loose rows prolate cells next to either 

 epidermis 35-40 /A ; central subglobose and oblate cells. 



SPRUCE : light 0.03 ; available water 12-16% ; humidity 40-70% ; 

 temperature 48-72 : no variation from the type. 



Light 1/33; water -f- 10% ; humidity +(5-10%); temperature 

 -(4-7)- 



Solidago extraria 



HALF GRAVEL: light i; available water 4.5-7.5%; humidity 30- 

 65%; temperature 5i-76: diplophyll 275/^5 epidermis 30/1; 

 cuticle 5 //,; chlorenchym (215 /*) 2-3 compact rows prolate cells 

 next to either epidermis 40 ^ ; central large clear oblate cells. 



THICKET: light 0.13; available water 10-13%; humidity 40- 

 70% ; temperature 48-72 : diplophyll 225 /*; chlorenchym (165 /*,) 

 cuticle 3 p. ; prolate cells 25-40 /A. 



