go BOTANICAL GAZETTE [SEPTEMBER 
of the Farinosae, fig. 6 A and B show a section of the ensiform 
limb of Hewardia tasmanica Hook. (Liliaceae). It will be seen 
that in the distribution of the marginal fibers it resembles both 
Tritonia (fig. 10), and Xyris Wallichii (fig. 12 C) and X. anceps 
(fig. 14 D). This similarity is also carried into the details of the 
vascular system. Fig. 6 A shows examples from the limb of 
Hewardia of opposite bundles imbedded in a common fibrous 
sheath, and thus resembling the pair of bundles from the limb of 
Xyris montivaga Kth., shown in fig. 15. With this may also be 
compared the paired bundles of Tofieldia of the Liliaceae (1), 
Tetroncium of the Juncaginaceae (7), and Tritonia (fig. 16 A, B) 
and Moraea Robinsoniana (6). These bundle pairs are not only 
characteristic of the ensiform leaves of monocotyledons, but may 
be found also among the Acacia phyllodes, with which I believe 
these leaves to be homologous; they occur, for instance, in Acacia 
neurophylla (6). In addition to these bundle pairs, which clearly 
originate by more or less complete fusion of strands belonging to the 
opposite sides of the phyllode, Xyris also shows bundle groups of a 
different nature, illustrated here in the case of Xyris asperata 
(fig. 13 A-C) and X. anceps (fig. 14 A). These find their parallel in 
the tribe Johnsonieae of the Liliaceae (5). In the limb of Arno- 
crinum Drummondit Endl. there are bundle groups imbedded in 
fibers, which may be compared with those of Xyris asperata. 
It is true that they do not, as in the case of Xyris, occur in an 
ensiform leaf, but the ensiform leaf type is found in Johnsonia, 
to which Arnocrinum is probably more nearly related than it is to 
the five other members of the tribe. 
The Farinosae furnish additional evidence for the close relation- 
ship of the ensiform and ‘‘radial” types of leaf. This relation, 
to which attention has already been called, both in the case of the 
leaves of the Liliiflorae and of the phyllodes of Acacia, is dis- 
played with special clearness in Jvis, among whose species there 
are examples of both forms of leaf, and also of intermediate types. 
In the Restionaceae, Xyridaceae, and Philydraceae there are 
comparable cases. Within the genus Amarthria both types are 
found (ci. figs. 3 and 4), and the same is true of Xyris (cf. figs. 12, 
14, 18 with PouLsEN’s fig. 3 of X. teretifolia, 16); while the ensiform 
