SEEDLING STRUCTURE IN THE LEGUMINOS.E, T 
SCHRANKIA UNCINATA, Willd. 
A perennial herb with tuberous rhizome. Hypocotyl with projecting one- 
sided ring at the base tapering slowly to a long primary root. ^ Cotyledons 
ovate. 
The structure is very similar to that of Mimosa pudica, with the following 
differences :—Fibres are present in the primary phloem of the root. Owing 
to the shortness and greater diameter of the hypocotyl the changes are com- 
pressed as compared with Mimosa pudica, the condition at the cotyledonary 
node being very similar in the two cases. 
LEUCÆNA GLAUCA, Benth. 
A low erect tree. Hypocotyl with ring at the base, tapering slowly toa long 
primary root. Cotyledons ovate-oblong, cordate at base. 
The root has a pith throughout, around which are present four equidistant 
V-shaped groups of xylem. The phloem is without fibres. At the collet ring 
each xylem has broken into a triad consisting of a central protoxylem and a 
pair of lateral metaxylems, Tannin-sacs appear here in the phloem, and 
a baud of thick-walled fibres extends between each phloem and the endo- 
dermis. The fibres decrease and the tannin-sacs increase in number as we 
ascend the hypocotyl. There are two zones in the cortex separated by a 
layer of small crushed cells (cf. Mimosa pudica, Acacia neriifolia, &c.). The 
epidermal cells are often prolonged into non-septate hairs. 
This condition persists for about three-quarters of the length of the hypo- 
cotyl, the xylem gradually lessening in quantity in the polar triads, but not 
so much so in the lateral triads. The lateral protoxylems divide and join 
their respective metaxylems, which become much spread out just below the 
node. Each cotyledon receives four xylem bands (those derived from the 
lateral root-poles being much stronger than those from the polar groups) and 
a vestige of the polar protoxylem in the median cotyledonary plane. Each 
xylem band has its own phloem group. 
The weakening of the polar relatively to the lateral xylems in the hypocotyl 
is a feature in common with the other Eu-Mimosez studied (Mimosa pudica, 
Schrankia uncinata) ; but Leucena glauca differs from these others in various 
anatomical and histological characters which are in part correlated with the 
superior size of the seedling. 
INGE. 
ALBIZZIA MOLUCCANA, Miq. 
The following description is based on a single specimen :— 
Hypocotyl uniform, except for a prominent one-sided collar at its base. 
Cotyledons ovate. 
The root is tetrarch, a small pith being surrounded by a continuous ring of 
xylem with projecting protoxylem corners. The early stages of the transition 
