Acacia.] 
XLIII. LEGUMINOS2E. 
479 
B. Tetrameras. — Phyllodia flat , coriaceous or thin, straight or falcate, several-nerved or 
1 -nerved when very narrow. Spikes often loose. Flowers 4-merous. Seeds longitudinal. 
Spikes usually slender or interrupted. 
Phyllodia rarely falcate, 2 to Gin. long or more, 3 to 5-nerved, broadly 
oblong and much reticulate or narrow and scarcely veined . . . . 80. A. longifolia. 
Phyllodia long, narrow-linear, mostly 1 -nerved 81. A. linearis. 
(A few species of the following Stenophyllce have 4-merous flowers, but with linear-terete 
finely striate phyllodia.) 
C. StenophylltE. — Phyllodia linear-subulate or narrow-linear, straight or slightly curved, 
terete or flat but thick, rarely under 2in. long or above 1J line broad. Spikes dense, short or 
slender, with small 5-merous, or in terete-leaved species often 4-merous flowers. 
Spikes sessile. Flowers 5-merous or 4-merous. Pod narrow. Phyllodia 
very long, minutely striate under a lens. Spikes Jin. long. Flowers 
5-merous 82. A. cyperophylla. 
Spikes pedunculate. Flowers usually 5-merous Pod narrow, with 
longitudinal seeds in A. pityoides ; hard, with valves rolling back 
elastically and oblique seeds, in A. xylocarpa, A. gonocarpa, and A. 
drepanocarpa ; flat, broad, thin, with oblique or transverse seeds in 
A. aneura. 
Phyllodia terete or scarcely flattened, very finely striate under a lens. 
Calyx thin and deeply divided, the lobes not spathulate 83. A. pityoides. 
Sepals free, narrow-spathulate 84. A. aneura. 
Phyllodia broad-linear, curved at the point, with many fine nerves. 
Seeds longitudinal, oblong 85. A. cibaria. 
Phyllodia oblong, tapering at the base, 2in. long, closely striate. Pod 
not 2in. long, Jin. broad. Seeds transverse 88. A. Kempeana. 
Phyllodia terete, nerveless or obscurely 1-nerved. Calyx lobed . . .. 87. A. xylocarpa. 
Pyllodia very narrow but flat, 1-nerved. Sepals free 88. A. gonocarpa. 
Phyllodia flat but thick, prominently 3 or 5-nerved, obtuse (tropical 
species 89. A . drepanocarpa. 
Phyllodia flat, minutely striate under a lens. Sepals free, linear- 
spathulate. Spikes cylindrical 84. A. aneura. 
D. Falcatae. — Phyllodia usually long or large, more or less falcate, narrowed at each end, 
with numerous parallel nerves or veins either all equal or the central one or several more prominent 
than the others, the smaller ones occasionally anastomosing. Spikes slender, dense or rarely 
interrupted. Flowers mostly 5-merous. 
(Several species of this group cannot be distinguished without the fruit.) 
Pod (where known and probably in all the species) narrow, with longi- 
tudinal seeds, or rarely broader with the longitudinal seeds along 
the centre. 
Phyllodia narrow-lanceolate or linear-lanceolate, rather thick, slightly 
falcate, with very fine parallel nerves, the midrib usually more 
prominent. 
Loosely pubescent. Stipules conspicuous. Phyllodia not above 3in. 
long 90. A. conspersa. 
Glabrous or the young shoots silky-pubescent. Stipules incon- 
spicuous. Phyllodia mostly above 3in. long. Pod unknown . . 91. A. doratoxylon. 
Phyllodia narrow-lanceolate, not so thick and rather more falcate than 
in the preceding species, usually with about 3 nerves more 
prominent than the rest. 
Phyllodia sprinkled with a few hairs. Pod flat, slightly convex over 
the seeds 92. A. delibrata. 
Phyllodia glabrous. Nerves numerous. Pod very convex over the 
seeds and moniliform 93. A. torulosa. 
Phyllodia glabrous. Pod spirally twisted into numerous coils .. 94. A. julifera. 
Phyllodia glabrous. Spikes interrupted, 2 to 3in. long (slender but 
dense in the preceding species) 95. A . Solandri. 
Phyllodia more falcate than in the preceding species, often broader or 
longer, with more nerves. Pod narrow or flat, straight or twisted. 
Branches scarcely angular. Phyllodia coriaceous, often hoary with 
numerous very fine nerves, all free from the base. Calyx 
pubescent 97. A . glaucescens. 
Phyllodia almost glabrous, longitudinally striate. Pod narrow- 
compressed and twisted 98. A. Maideni. 
Branches very angular. Phyllodia with 1 or 2 of the principal 
nerves confluent with the lower margin of the base. Pod twisted 99. A. Cunning hamii. 
