340 
XLIII. LEGUMINOS^E. 
[Mirbelia. 
4. m. speciosa (showy), Sieb. in DC. Prod. ii. 115 ; Benth. FI. Austr. ii. 
36. An erect shrub of 2 to 3ft., with numerous virgate angulaf branches, 
slightly hoary-pubescent or glabrous. Leaves scattered or verticillate in threes, 
narrow-linear, obtuse with a small straight sometimes almost pungent point, ^ to 
fin. long, the margins closely revolute, glabrous, scarcely reticulate. Flowers 
bluish-purple, almost sessile in the upper axils, the upper ones forming a terminal 
interrupted spike leafy at the base. Calyx fully 3 lines long, hoary-pubescent, 
the lobes acute, as long as the tube, the 2 upper ones united to the middle. 
Standard twice as long as the calyx, emarginate ; wings nearly as long ; keel 
very short, obtuse. Ovary sessile, glabrous, with about 12 ovules. Pod thickly 
ovoid, about 4 or 5 lines long. — Bot. Reg. 1841, t. 53; Reichb. Icon. Exot. t. 
191. 
Hab.: Southern Queensland. 
The figure of M.Jtoribunda, Paxt. Mag. viii. 103, gives much more the idea of this plant than 
of the true western M. floribunda. 
5. IVE. oxyclada (sharp-pointed branchlets), F. v. M. Fratjm.. iv. 12 ; Benth. 
FI. Anstr. ii. 3 L A rigid leafless shrub, resembling M. daviesioides, but more 
slender, the branchlets usually spinescent. Leaves replaced by minute scales. 
Flowers unknown. Fruiting pedicels short, solitary or in pairs along the 
branches. Pod shortly stipitate, ovoid, turgid, but with prominent sutures and 
acuminate with the rigid persistent base of the style, 2 to 8 lines long, imperfectly 
divided into 2 cells by an incomplete dissepiment, the sutures persisting as a 
replum after the valves have fallen. Seed 1 in each cell, not strophiolate. — 
Jaeksonia viminalis, A. Cunn.; Benth. in Ann. Wien. Mus. ii. 75; Oxycladium 
semiseptatum, F. v. M. in Hook. Kew Journ. ix. 20, and Fragm. i. 168. 
Hab.: Given as a Queensland plant in F. v. Mueller’s Cens. Austr. Plants, probably northern. 
5. ISOTROPIS, Benth. 
(Equally turned, perhaps alluding to the curved parts of flowers.) 
Calyx deeply lobed, the 2 upper lobes united nearly to the top. Petals clawed* 
Standard orbicular, emarginate, longer than the wings ; wings obovate, some- 
what falcate ; keel incurved, nearly as long as the wings. Stamens free. Ovary 
sessile, with numerous ovules ; style incurved, filiform, with a minute terminal 
stigma. Pod oblong linear or lanceolate, acute, more or less turgid. Seeds not 
strophiolate. — Herbs or undershrubs, with diffuse or ascending stems. Leaves 
alternate, simple or unifoliolate, herbaceous. Stipules linear-falcate or minute. 
Flowers solitary, on axillary peduncles, or forming a loose terminal raceme. 
Ovary villous. 
The genus is exclusively Australian. It is closely allied to Oxylobium and Chorizema, differing 
chiefly in habit, in the deeper-cleft calyx, and in the longer pod. — Benth. 
Leaves of 1 leaflet, articulate on the petiole. 
Calyx pubescent, 3 lines long. Racemes mostly leaf-opposed, leafless. Stem- 
leaves lanceolate, acute 1. I. filicaulis. 
Calyx pubescent. 2 lines long. Pedicels short, axillary or leaf-opposed. 
Stem-leaves linear, flat 2. 7. parviflora. 
1. I. filicaulis (stems thread-like), Benth. in Ann. Wien. Mus. ii. 71, and 
FI. Austr. ii. 40. Stems erect or ascending from a perennial base, often above 
lft. high, slender, branched and terete, glabrous or pubescent with appressed 
hairs. Leaves consisting of a single leaflet, articulate on a rather short petiole, 
linear or lanceolate, acute, 1 to nearly 2in. long, or rarely small and linear- 
cuneate. Flowers in loose slender racemes, mostly leaf-opposed. Pedicels 
rather longer than the calyx. Bracteoles minute or none. Calyx nearly 
