182 



pitcher cavity the hairs cease and a smooth area succeeds, due to 

 the somewhat papillate form of the epidermal cells, which was 

 termed by Hooker the " conducting zone " (fig. lb). The walls 



are strongly cuticularized, espe- 

 cially in the rolling margin be- 

 tween the inner and outer sur- 

 faces of the, pitcher. Below this 



is a glabrous area, the " glan- 



dular zone " (fig. ic), and at the 

 base of the pitcher is a region 

 which bears long needle-like 

 hairs, the " detentive surface " 

 (fig. id). Each of these areas 

 bears glands except the last. 

 Hooker (/. c.) stated that there 

 were no honey-glands in Sar- 

 racenia purpurea, but Schimper 

 (Bot. Zeit. 40: 227. 1882) 

 thought from the structure of 

 crystals in the upper part of the 

 leaves which he had dried, as 

 well as from the behavior of 

 insects, that nectar glands oc- 

 curred in the upper part of the 

 pitcher. Goebel (Pflanzenbiol. 

 Schild. 2: 90. 1 891) also de- 

 scribed nectar glands in this area. 

 The discrepancy between these 

 two statements may be ex- 



FlG. I. \.t^{ oi Sarracenia purpurea ^^incd by the theory which 



with a portion of the pitcher cut away to / , v , , , r 



show the areas described by Hooker as Hooker (/. C.) has advanced for 



(a) the "attractive surface," {b) "con- other specicS, that "the Sac- 



ducting zone," {c) " glandular -zone," chaHne fluid Only makes its 



and fr/) "detentive surface." , . ,. 



^ ' appearance during one particu- 



lar period in the life of the pitcher." Macfarlane (Ann. Bot. 7 : 

 407. 1893) says that the protective winter bud-leaves show 

 many honey-glands particularly on the outer surface. 



