SEEDLING STRUCTURE IN THE LEGUMINOSJAE. 59 
The root is tetrarch, containing a solid, almost square mass of xylem with 
slighly projecting protoxylem angles. A pith begins to appear at the collet, 
and slowly breaks the xylem into four 1-2-seriate plates. These slowly 
broaden inwardly, and become first Y-shaped, then T-shaped. About 2 mm. 
below the node the polar xylems break into triads and the lateral xylems 
divide in half: at the node the adjoining bundles fuse into pairs; so that 
the cotyledonary trace consists of a median protoxylem and a pair of loose 
collateral bundles, which are soon resolved into their components on entering 
the lamina. The transition is thus typically * intermediate.” 
No fibres are found in the phloem of the seedling; tannin-sacs are 
conspicuous objects in the hypocotyl. 
KENNEDYA RETUSA, F. Muell. 
A woody climber. The hypocotyl is remarkably thickened in its lower 
part, and narrows rather suddenly about half-way up ; it is constricted at 
the collet, the root being slender and much branched. The cotyledons are 
oblong, rather thick, pinninerved. 
The transition phenomena show much similarity to those described for 
K. rubicunda, and need not be further considered. 
CLITOREA TERNATEA, Linn. 
A climbing undershrub. The cotyledons often remain long enclosed in 
the testa, large, thick but foliaceous, oblong, with a cordate base, slightly 
asymmetrical owing to folding in seed. The hypocotyl gradually tapers 
to a long, much-branched primary root. Scattered hairs are borne by the 
hypocotyl, these having a single transverse wall and a recurved pointed tip. 
Lubbock (1892, p. 441) gives a figure of the seedling, and De Candolle 
(1825, pl. 9) gives figures of a series of stages in its development. 
The root is tetrareh and has a central pith far below the region of the. 
collet. At the collet region there are four protoxylem poles connected by 
bridges of metaxylem which form an almost continuous ring round the pith.. 
The phloems contain each a group of fibres. Тһе endodermis is fairly: 
distinct, but is not dotted. 
As we pass up the hypocotyl the xylem tends to break up into groups, 
until half-way up the hypocotyl each xylem quadrant is represented by 
three groups, a median protoxylem and two lateral metaxylems. Alternating: 
with the protoxylem are four long strips of. phloem, bounded by pericyclic 
fibres which abut directly on the well-marked starch-sheath. The xylem. 
also contains many fibres. Higher up the hypocotyl the four root proto-. 
xylems also divide and the halves join their respective metaxylems. There 
are thus produced eight bundles of xylem, tairly evenly distributed round 
the stele. Each cotyledon receives four of these bundles, which approach. 
