194. REY. PROF. G. HENSLOW ON THE 
XXXII. AMARYLLIDACER (PL XXX). —vn. Nar- 
CISSUS Tazerra illustrates the way pedicels are formed from a 
peduncle when the cords do not form a compact ring, as is 
generally the case in Exogens. The peduncle of this Nareissus 
is oval, and has an oval arrangement of cords somewhat wide 
apart (1). These branch on reaching the node in a confused 
manner (2), producing an ill-defined mass, as seen in a cross 
section. A little higher up this becomes broken up into irregular 
groups isolated in the parenchymatous tissue (3). The first few 
clearly differentiated belong to the sheathin g-bract on the eireum- 
ference (4); all the rest now become isolated as separate cords, 
usually in groups of fiveor more, and marked out in readiness for 
separation into pedicels (5). "This is soon done by the development 
of epidermides between them, and variously angled pedicels result 
(6). They become triangular, and the cords are grouped into three 
larger ones at the angles and pairs of smaller ones between them 
it). On approaching the base of the ovary, they multiply and 
form a dense triangular prism (5). This throws off three at the 
back of each ovary-cell as dorsal cords(9) ; three are intermediate 
and the rest form a broken circle in the middle (9). Twelve 
cords thus pass up the circumference, the central ring forming 
three placentary cords. Near the top of the ovary the axile mass 
contracts, while the septa bulge out and show the placentary 
cords, now arranged in two rows with the so-called “septal 
gland" between them. This is simply a place where the two 
epidermides of the coherent carpellary walls are differentiated 
and incoherent (10 and 10%), 
LVII. GALANTHUS NIVALIS (Å. pl.).—Ph. van Tieghem has 
described the anatomy of the single form, the pedicel being 
much the same as in the double. The number of cords vary 
from about six to eight (1, 2, 3). They increase to twelve, and 
then pass up the inferior ovary. In the double Snowdrop the 
cords form a massive ring (4). This divides into two concentrie 
circles, the outer being sepaline and the inner petaline (5). These 
now branch repeatedly, and vive rise to the immense number of 
cords supplying the numerous sepals and petals (6). There is 
often no trace of an ovary; hence the globular termination of the 
peduncle is Wholly axial in nature, and is required for the multi- 
plication of the petaline eords by repeated chorisis which takes 
place in various ways (7). 
