480 
XL11I. LEGUM1NOS/E. 
[ Acacia . 
Branches terete or nearly so. Flowers glabrous. 
Pod very narrow and straight 100. A. leptocarpa. 
Pod broad, very flexuose or twisted, not spiral. Seeds along the 
centre 101. A. polystachya. 
Branches terete or nearly so. Flowers pubescent. Pod long and 
slender, longitudinally striate and furrowed 102. A. holcocarpa. 
Pod (where known and probably in all the species) rather broad, 
coriaceous, woody or rarely rather thin. Seeds very oblique or 
transverse. Parallel veins of the phyllodia usually numerous and 
closely packed. 
Phyllodia long, narrow, and slightly falcate (as in A. julifera). Pod 
flat, with straight margins and undulate valves. Seeds orbicular. 
Branches acutely angular 103. A. plcctocarpa. 
Phyllodia broad, falcate or very oblique. Pod broad, hard, and woody, 
obliquely veined. 
Branchlets 3-angled. Pod obtusely recurved or hooked at the end, 
much narrowed at the base 104. A. aulacocarpa. 
Branchlets very flat. Pod not hooked, narrowed at the base .. .. 105. A. calyculata. 
Branchlets nearly terete or slightly angular. Pod broad, very hard, 
obliquely truncate at the base. 
Pod flat or scarcely twisted, the outer margins entire 106. A. crassicarpa. 
Pod much twisted, the outer margin deeply sinuate 107. A. auriculiformis. 
Pod quite uncertain. Phyllodia narrowed at both ends, with numerous 
parallel veins or nerves, and usually falcate (as in the Falcatce), but 
under 3in. long 96. A. leptostachyu. 
E. Dimidiatte. — Phyllodia large, broad, very oblique or falcate, with 3 or more distant 
prominent nerves, more or less confluent at or near the lower margin at the base, pinnately net- 
veined beticeen them. 
Branchlets very acutely angular or almost winged. 
Glabrous and glaucous. Spikes pedunculate. Flowers mostly 4- 
merous 108. A. latifolia. 
Hoary or silky-pubescent. Spikes sessile. Flowers mostly 5-merous 109. A. holosericea. 
Branchlets subtriangular. Pod falcate 110 . A. Mangium. 
Branchlets soon nearly terete. Pod spirally curled, forming a close curl 
about lin. long 111. A. cincinnata. 
Branchlets terete or scarcely angular. 
Spikes 1 to 2in. long. Flowers glabrous. (Erect shrub) 112. A. dimidiata. 
Spikes scarcely Jin. long, dense. Flowers densely pubescent. Stem 
prostrate or diffuse 113. A. humifusa. 
Div. II. BIPINNA TM. — Leaves all bipinnate. 
Series VIII. Botryocephalae . — Leaves bipinnate. Stipules small or none. Flower-heads 
globular, in axillary racemes or terminal clusters. 
Glabrous and glaucous. Leaflets 4 to 8 pairs, obov ate -oblong, very 
obtuse, 4 to 6 lines long. Gland close to the lowest pinnae 114. A. spectabilis. 
Foliage pubescent. Leaflets 6 to 10 pairs or more, obtuse, 3 to 4 lines 
long. Gland at the base of the petiole 115. A. polybotrya. 
Foliage glabrous. Leaflets 10 to 15 pairs, obtuse or acute, firm, pale 
underneath, 3 to 4 lines long 116. A. discolor. 
Pinnae 8 to 15 pairs. Leaflets very numerous, narrow-linear and very 
small, or 3 to 4 lines long and subulate. 
Glabrous or, if tomentose, pubescent, the young shoots of a yellowish 
or golden tinge. Pod (always ?) under 4 lines broad, often con- 
tracted between the seeds 117. A. decurrens. 
Silvery-tomentose or very glaucous. Pod (always?) above 4 lines 
broad, not contracted between the seeds 118. A. dealbata. 
Hirsute with spreading hairs of a reddish-brown colour. Leaflets 
small. Glands few 119. A. Arundelliana. 
Pinna 3 to 6 pairs. Leaflets 6 to 10 pairs, oblong, under 2 lines long. 
Branches glabrous or hispid. Flowers numerous, in dense heads ... 120. A. leptoclada. 
Series IX. Gummiferse. — Leaves bipinnate. Stipules of some or all the leaves persistent 
and spinescent. Flower-heads globular, on solitary or clustered simple peduncles . 
Bracts small, close under the flower-heads. Pinnae 4 to 6 pairs. Leaflets 
small, 10 to 20 pairs. Pod thick, cylindrical or spindle-shaped, in- 
dehiscent, pithy between the seeds 121. A. Farnesiana. 
Bracts forming a little 4-lobed ring round the middle of the peduncle. 
Pinnae 15 to 25 pairs. Leaflets scarcely 1 line long. Flowers 4- 
merous. Pod coriaceous ; valves slightly convex, striate lengthwise 122. A. Bidwilli. 
Inflorescence spicate 123. A. Sutherlandi. 
