476 
XLII1. LEGUMlNOSiE. 
[Acacia. 
B. Brevifolise. — Shrubs, never spinescent. Phyllodia either broad ovate or falcate, or 
narrow, oblong or linear, short, obtuse or with a small recurved innocuous point, occasionally 
undulate and more pointed. Stipules minute or none. Peduncles 1-headed. 
Phyllodia from obovate-orbicular to linear, obtuse but with the nerve 
ending in a small recurved point. Sepals free, linear-spathulate. 
Phyllodia rarely exceeding Jin., linear. Branches scarcely angular. 
Flowers 10 to 15 or rarely 20 in the head 17. A. lineata. 
Branches scarcely angular. 
Phyllodia oblong-falcate, often undulate, the nerve-like margin 
scabrous denticulate 18. A. hispidula. 
Phyllodia broadly ovate or orbicular, mucronate, much undulate, 
entire. Peduncles slender 19. A. undulifolia. 
Phyllodia obliquely truncate at the base, 1 -nerved, the upper side 
with a spine at the angle 20. A. plagiophylla. 
C. Ang-ustifoliae. — Shrubs or trees, not spinescent. Phyllodia oblong -lanceolate or linear, 
occasionally falcate, with 1 central nerve or rarely 2 -nerved, mostly above 1 in. long. Stipules 
minute or none, or rarely spinescent. Peduncles 1-headed. Some of the species very resinous. 
Peduncles usually nearly or above Jin. long. Phyllodia always 1-nerved. 
Very resinous. Lateral veins few, rather prominent, anastomosing. 
Calyx toothed or lobed. Phyllodia narrow-linear, numerous .. ..21. A. Gnidium. 
Not resinous. Lateral veins scarcely conspicuous. Phyllodia with a 
prominent midrib. 
Calyx short, truncate 28. ^4. salicina. 
Sepals narrow, free. 
Pedicels solitary or in pairs, the upper ones often racemose from 
the abortion of the phyllodia. Stipules often spinescent. 
Phyllodia rarely above 2in. long 22. A. sentis. 
Pedicels slender, clustered in the axils. Stipules not spinescent. 
Phyllodia lanceolate-falcate, 4 to 6in. long 23. A. fasciculifera. 
D. Racemosae. — Not spinescent. Phyllodia not pungent (except in a few broad-leaved 
species), with one central nerve or very rarely a second shorter or fainter one, the veinlets when 
visible diverging from the midrib or reticulate. Flower-heads globular, few or all or nearly all in 
axillary racemes, very rarely a few solitary in the lower axils of a young branch. Flowers usually 
small and 5-merous in all except A. myrtifolia. Petals not striate. 
Phyllodia mostly long, falcate-lanceolate or almost linear, narrowed at 
the ends, more or less distinctly penniveined. Calyx about half as 
long as the corolla. 
Eastern species. Flower-heads small. 
Phyllodia mostly long lanceolate-falcate. 
Sepals free, narrow. Gland of the phyllodia at the base or none. 
Funicle surrounding the seed 24. A. falcata. 
Sepals united. Gland of the phyllodia at the base or none. 
Veinlets transverse ; funicle short 25. A. macradenia. 
Sepals united. Gland of the phyllodia distant from the base, a 
secondary nerve often leading to it. Veinlets obtuse. Funicle 
surrounding the seed 26. A. penninervis. 
Phyllodia mostly long linear-falcate. 
Sepals free or nearly so. Gland at the base of the phyllodia 
minute or none. Funicle short, the last fold clavate . . . . 27. A. neriifolia. 
Phyllodia (on flowering branches) 14 to 2Jin. long, usually with 2 or 3 
distant glands. Racemes many-headed. Sepals at first cohering. 
Three folds of the funicle encircling the seed 29. A. amoena. 
Phyllodia 2 to 5in. long, scarcely falcate, thick, obscurely reticulate. 
Racemes few-headed. Sepals at first cohering. Funicle clavate, 
scarcely folded at the base 30. A. hakeoides. 
(See also the longest-leaved forms of A. crassiuscula and A. decora.) 
Phyllodia linear, thick, rarely falcate-lanceolate, usually without glands, 
the lateral veins reticulate and obscure, mostly oblong-linear, obtuse. 
Pod thick. Calyx short, thin, truncate. Seeds longitudinal .. ..28. A. salicina. 
Phyllodia linear or lanceolate, usually thick. Sepals very thin or 
narrow, distinct. Pod very flat, obtuse. Seeds transverse. Young 
racemes often enclosed in imbricate scales. 
Young branches acutely triquetrous. Pod broad, coriaceous and 
glaucous. Sepals very thin. Phyllodia mostly above 3in. long . . 31. A. suaveolens. 
Branchlets dark, viscid. Phyllodia linear, gland at base 32. A. Dietrichiana. 
Young branches scarcely angular. Pod membranous. Sepals very 
narrow. Phyllodia several inches long, narrow linear 33. A. Murrayana. 
