LEAVES OF CERTAIN AMARYLLIDS! 
AGNES ARBER 
(WITH EIGHT FIGURES) 
In a previous memoir’ attention has been drawn to the existence 
of leaves with a phyllodic type of anatomy among the Amaryllida- 
ceae. In the present paper it is proposed to discuss certain special 
cases drawn from this family. 
Leaf-anatomy of Narcissus 
The foliage leaves of Narcissus consist typically of a linear limb 
(fig. 1, 2) and a short sheathing base (6). In the very young leaves 
the sheath is relatively the more conspicuous organ, while the limb 
is scarcely developed. This relation is shown in fig. 2, drawn from a 
leaf which slightly exceeded 1mm. in length. In N. Tazetta L. 
limbless sheathing leaves occur, in addition to foliage leaves in 
which both sheath and limb are developed. An examination has 
been made of the anatomy of the limb in the following species, 
representing the various sections of the genus: 
- SUBGENUS EUNARCISSUS 
Section AJAx.—N. Pseudo-narcissus L. 
Section GANYMEDES.—JN. triandrus L. 
Section QuELTIA—JN. incomparabilis Mill., N. Jonquilla L., N. junci- 
folius Req., N. reflexus Lois. 
Section Genutn1.—J. biflorus Curt., N. poeticus L. 
Section HERMIONE.—N. Tazetta L. 
SUBGENUS CORBULARIA 
N. Bulbocodium L., N. monophyllus T. Moore. 
Anatomy of the type interpreted as phyllodic? has been found 
in Narcissus Pseudo-narcissus, N. triandrus, N. incomparabilis, 
* This paper represents part of the work carried _ oe the tenure of a Keddey 
Fletcher-Warr Studentship of the University of Lon 
2 ArBER, AGNES, The phyllode theory of the momentos leaf, with special 
reference to anatomical evidence. Ann. Botany 32:465-sor. 
Botanical Gazette, vol. 72] [102 
