Francis E. Lloyd — 26 — Carnivorous Plants 



The structure of the glands is like that in S. purpurea (3 — 3). 



GoEBEL described the seedling leaves which appear directly fol- 

 lowing the cotyledons. In form they resemble closely the juvenile 

 leaves of S. purpurea. The leaves of the two species in the juvenile 

 state are regarded by W. P. Wilson (1888) as indistinguishable, and 

 he regarded them as closely related. The presence of the umbo, how- 

 ever (5 — 5), clearly separates S. psittacina from S. purpurea. The 

 forward margin of the mouth is simple, and the inturning valvular 

 nectar roll with its marginal thickening is absent. Absent also are 

 the two lateral lobes. The interior surface is divided into four zones: 

 (i) the under surface of the hood, with scattered retrorse hairs with 

 interspersed glands; (2) the ghding zone with a Hning of imbricated 

 cells with downward directed points; (j) a wide zone with many long 

 downward pointed hairs with glands between; and {4) the bottom 

 zone with smooth epidermis. Goebel's zone (2) corresponds to zones 

 2 and 3 in my description of the adult form of leaf above. 



Sarracenia Courtii. — This is a hybrid between S. purpurea and 

 S. psittacina, and in its structure reflects the characters of both in the 

 zonation of the pitcher leaf. As in S. purpurea, the conductive zone, 

 zone 2, is broader than in 6*. psittacina, and occupies a transverse band 

 around the interior of the leaf, narrowing dorsally, thus separating 

 zones I and 3 almost completely. Zone 3 is much less hairy than this 

 zone in S. psittacina, but is glandular, as in that species. The general 

 aspect of 5. Courtii resembles that of 5. psittacina, but the plant is 

 larger. 



Sarracenia minor. — In this species the leaf stands in a vertical 

 position, and the opening is overhung by a wide, domed lid (i — 9; 

 3 — 7-9)- The wall of the pitcher opposite the opening, and for some 

 distance up and down, is fenestrated with white patches as in Darling- 

 tonia. These are slightly thinner areas of the wall, devoid of chloro- 

 phyll, and there is no palisade tissue anywhere. These white spots 

 may be regarded as a visual lure for insects. The lower edge of the 

 mouth is thickened by an outwardly reflexed edge of the wall, as in 

 5. purpurea, to form the nectar roll. The body of the pitcher is a 

 tapering tube slightly curved, and carrying a wing in front — the 

 ala ventralis — which, has a double edge above, the edges flowing 

 right and left into the edge of the hd, but a single one below, and is 

 not confluent with the stipular wings of the leaf base. The ventral 

 wing starts at the top of the tube and attains its greatest width about 

 half way down. 



The outer surface is sparsely hairy with short, curved hairs with 

 finely tuberculated walls. There are numerous glands scattered all 

 over the outer surface, and these are especially active in secretion along 

 the upper part of the edge of the wing, where drops of nectar which 

 have been excreted by them may be seen (5 — 9). I have not seen 

 nectar collecting visibly elsewhere on the outer surface. The interior 

 surface presents a zonation visible to the eye but somewhat dif- 

 ferent from that of 5. purpurea and more like that of 6". psittacina. 

 Mellichamp (1875) recognized three "belts" or zones: (/) embracing 

 the internal honey secreting portion; (2) a belt hned with soft and 

 velvety pubescence affording no foothold for most insects; and (j) 



