Indigofera.] 
XLIII. LEGUMINOSiE. 
889 
15. * 1 , decora (beautiful), Lindl. in Journ. FLort. Soc. Lond. i. 68, and Bot. 
Bet). 1846, t. 22 ; Benth. hi. Hongk. 77 ; Bot. Mag. t. 5068. A somewhat strag- 
gling undershrub from a running rhizome ; stems often distant, 1 to 3ft. high, 
nearly glabrous. Leaflets opposite, 3 to 6 pairs besides the terminal one, from 
oval to oblong-elliptical, the largest from 1^- to 2in. long, usually acute or scarcely 
obtuse, glaucous, and slightly hairy underneath, the smaller veins scarcely con- 
spicuous. Racemes elongated, axillary, solitary, long as the leaves, bearing 
numerous patent or deflexed pink and rose-coloured flowers, nearly lin. long. 
Calyx short, cup-shaped, 5-toothed. Standard oblong, streaked with a horseshoe 
band near the base. Keel petals ciliate on the upper edge. Pod about 14in., 
nearly straight, erecto-patent. 
Hab.: A Chinese species found here and there as a stray from garden culture, the flowers then 
being rather smaller than above stated. 
16. X. australis (Australian), WUld.: DC. Prod. ii. 226 ; Benth. FI. Austr. 
ii. 199. An erect branching shrub of 2 to 4ft., assuming occasionally the 
appearance of a low undershrub, either glabrous or slightly sprinkled with the 
small hairs of the genus. Leaflets usually 9 to 17, oblong, obtuse or retuse, \ to 
fin. long, but varying to broadly ovate, almost orbicular in some specimens or 
nearly linear in others. Stipules small ; stipellae none except minute glands. 
Flowers red and showy, in dense or loose racemes shorter or rather longer than 
the leaves, the pedicels usually longer than the calyx. Calyx about 1 line long, 
broad and obliquely truncate, the teeth either inconspicuous or the lower ones 
especially slightly prominent, but always much shorter than the tube. Standard 
truncate at the base, with an exceedingly short claw, 3 to 4 lines long. Pod 
spreading terete, straight or nearly so, 1 to Hin. long. — Vent. Jard. Malm. t. 45; 
Bot. Reg. t. 386; Lodd. Bot. Cab. t. 149; Hook. f. FI. Tasm. i. 99 ; 1. angulata, 
Lindl. Bot. Reg. t. 991 ; I. sylvatica, Sieb. in Hook. Bot. Mag. t. 3000 ; I. ervoides, 
Meissn. in PI. Preiss. i. 89. 
Hab : Brisbane River, Moreton Bay, Fraser, A. Cunningham, F. v. Mueller, and others. 
Amidst all its variations, this species may be known by its glabrous, not hoary, aspect, not- 
withstanding the minute hairs often visible under a lens, by the very short or quite obsolete 
teeth of the calyx, and by the pod glabrous even when quite young. The following are the 
principal forms it assumes, which, although they often pass one into another, are nevertheless 
sometimes considered as distinct species. — Benth. 
a. angulata. Tall, with angular branches. Flowers large and showy. 
b. gracilis, DC. Branches terete and as well as the petioles and racemes more slender. 
Flowers rather smaller. Brisbane River. 
c. minor. More scrubby and branched, of a pale color, the branchlets short and somewhat 
angular. Leaflets small, with small stipellary glands. Flowers small, in short racemes. 
d. signata, F. v. M. Rigid, very glabrous, apparently almost leafless, the numerous rigid 
petioles bearing very small obcordate obovate or cuneate leaflets in distant pairs, with very 
prominent dark-coloured stipellary glands. Flowers as in the var. minor. 
e. platijpoda. With the same rigid aspect and few small leaflets with prominent stipellary 
glands as the var. signata, but the common petioles very rigid and flattened, often above 1 line 
broad. 
17. I. brevidens (teeth short), Benth. in Mitch. Prop. Austr. 385, and FI. 
Austr. ii. 200. A slender shrub, very nearly allied to I. australis, of which F. v. 
Mueller considers it a variety, but always hoary or silvery with the appressed 
forked pubescence of the genus or white with a denser tomentum. Leaflets from 
about 9 to 21, obovate or oblong, obtuse or mucronate, rarely £in. long, usually 
firmer than in I. australis, and hoary or white on both sides, more or less petio- 
lulate. Stipules rather short and deciduous or rarely more persistent and 
recurved. Flowers rather smaller than in /. australis, the calyx-teeth much more 
prominent although still very short, the lowest occasionally as long as the tube. 
Standard densely silky-pubescent. Pod always puboscent or tomentose, at least 
when young. — I. lasiantlia, F. v. M, in Rep. Greg. Exped. 6, 
