136 THE FLORA OF THE NORTHERN TERRITORY. 



12. PELTOPHORUM, Vog. 



(Caesalpinia, sect., Brasilettia, D.C.). 



1. P. ferrugineum, Benth. — N.A., Bynoe ; Islands of the N. Coast, R. 

 Brown, Earl de Grey's Island, Armstrong. 



13. BRACHYSEMA, R. Br. 



{Leptosema, Benth; Kaleniezenkia, Turcz. ; Burgesia, F.v. M.). 



Stems winged, bearing the flowers at their notoh-Uke nodes. 



Flowers mostly clustered. Bracts imbricate. Pod not exceeding 



the calyx. — 1. B. bossiaeoides. 

 Flowers sohtary. Bracts minute or none. Pod more than twice as 



long as the calyx. — 3. B. uniflorum. 

 Flowers crowded on short radical scapes. Barren stems erect, 



dichotomous and leafless. — 2. B. Chambersii. 



1. B. bossiaeoides, Benth. — ^N. Coast, R. Brown ; Sims Island, A. Cun- 

 ningham. 



2. B. Chambersii, F. v. M. — 40 miles W. of Lander Creek, Camp IV., 

 G. F Hill (No. 365), 21/6/1911. 



Recorded. Between the rivers Fink and Stephenson, M'Douall Stuart. 



3. B. uniflorum, R. Br. — Islands of the Gulf of Carpentaria, R. Brown. 

 B. oxyloboides, Benth. ; recorded from North Australia in National 



Herbarium Census. 



14. MIRBELIA, Sm. 



[Dichosema, Benth. ; Oxycladium, F. v. M.). 



1. M. oxydada, F. v. M. — On sandhills, 70 miles N. of Survey Camp III., 

 G. F. Hill (No. 394), 25/6/1911. 



110 miles N. of Survey Camp IV., G. F. Hill (No. 408), 1/7/1911. 



Recorded. N.A., A. Cunningham ; sandstone tableland at the head of 

 Victoria River, and in Amhem's Land, F. v. Mueller. 



15. ISOTROPIS, Benth. 



Calyx tomentose, 4 lines long. Racemes terminal, leafless. Leaves ovate 

 or oblong, very obtuse. — 2. I. atropurpurea. 



Calyx pubescent, 2 Unes long. Pedicels short, axillary or leaf-opposed. 

 Stem-leaves linear, fiat. — 3. I. parviflora. 



Calyx pubescent, about 3 Unes long. Racemes short, flowers few or 

 solitary. Leaves narrow-linear, flat, closely induplicate, Subacute and recurved. 

 — 1. I. argentea. 



1. /. argentea, Ewart and Morrison. — Flowers in axillary racemes, petals 

 yellow, of about equal length, keel beaked, pod oblong, obtuse, seeds numerous, 

 smooth. 



A slender, few-branched undershrub, 1| ft. high, the whole plant clothed 

 with an indumentum of appressed shining hairs. Leaves unifoholate, articulate 

 on a very short petiole, narrow linear, flat but closely induphcate, subacute and 

 recurved at distal end, in length up to 5 cm. X 0.3 cm. broad, the stiff 

 silvery hairs more dense on under surface. Stipules subulate and short. 



Racemes short, axillary or terminal, flowers few or solitary, peduncles 

 6-8 mm., with a pair of narrow lanceolate bracts at articulation near or above 



