40 MR. R. H. COMPTON : AN INVESTIGATION OF THE 
with J. tinctoria, to which species 7. sumatrana is referred by the Kew 
Index. 
The structure is very similar in both species, and agrees with that described 
for Г. galegoides so nearly that further description is unnecessary. 
INDIGOFERA sp. (? 7. pulchella, Roxb., a shrub.) 
Cotyledons ovate, leaf-like. 
This species also shows a close similarity in structure to 7. galegoides and 
other Indigofera spp. 
TEPHROSIA PURPUREA, Pers. 
Much branched, sub-erect perennial, 30-60 em. high. Hypocotyl tapering 
rather rapidly to the long primary root. Cotyledons oblong, with a notch on 
one side owing to pressure against the hilum, much furrowed on the ventral 
surface over the veins. The seedling is clothed with long unicellular hairs. 
The root is tetrarch, and 3 mm. below the external collet a solid xylem star 
is present. The phloem has stout fibres. А pith begins to appear, and at the 
collet the xylem is spread out into a continuous ring of metaxylem with four 
projecting protoxylems. The phloem at the collet forms four continuous 
bands alternating with the protoxylems ; each of these contains a conspicuous 
group of fibres separated from the well-dotted endodermis by a single layer 
of pericycle, and flanked by sieve-tubes, companion-cells, and phloem 
parenchyma. 5 mm. above the collet the pith is still larger, and the xylem 
ring has broken into four similar triads, each consisting of a small effete 
median protoxylem and two larger tangential metaxylems. 
The lateral metaxylems separate gradually, their protoxylems also divide 
and follow them ; 10 mm. below the cotyledons there are present, besides the 
polar protoxylems, four long tangential bands of metaxylem with vestiges 
of the lateral half-protoxylems on their intercotyledonary edges. 
As we ascend to the cotyledonary node the xylem bundles gradually 
contract and become endarch, the lateral protoxylems losing their distinct- 
ness ; the pitted vessels are completely replaced by spiral, and the phloem 
loses its fibres. The cotyledon trace thus consists of a pair of collateral stem- 
like bundles with intervening polar protoxylems. 
GALEGA ORIENTALIS, Lam. 
Erect herbaceous perennial. Hypocotyl slowly tapering to the root. Cotyle- 
dons long-stalked, spathulate. 
The root is tetrarch, four equal xylem plates being present and meeting 
at the centre. The phloem contains a few large fibres. As we ascend to the 
collet, two of the protoxylem rays dwindle relatively to the others, and about 
4 mm. above the collet they disappear altogether, though their metaxylems 
persist to some extent ; the structure then becomes apparently diarch. A 
