THE FLORA QF THE NORTHERN TERRITORY. 95 



Spines small. — 5. B. paradoxa. 



Spines large and divided. — 7. B. spinosa.* 



Series II. Fruiting-perianth glabrous or slightly hairy, with 3 to 5 divari- 

 cate dorsal spines. Seed vertical. 



Perianth-spines 3 ,rarely 4, one sometimes very small. — 3. B. glabra. 



Perianth-spines 5, short. Small diffuse undershrub. Perianth under 1 

 line long. — 2. B. echinopsila. 



1. B. bicornis, F. v. M. {Sclerolaena bicornis, Lindl). — Henbury Station, 

 Finke River, G. F. Hill (No. 40), 7/3/1911. 



Recorded. Sturt's Creek and Plains of Promise, F. v. Mueller. 



2. B. echinopsila, F. v. M. ( Anisacantha echinopsila, F. v. M.). — 60 miles 

 N.E. of Camp II., G. P. Hill (No. 268), 7/6/1911. 



3. B. glabra, F. v. M. (Anisacantha glabra, F. v. M.). — Upper Victoria 

 River and Sturt's Creek, F. v. Mueller. 



4. B. Muelleri, F. v. M. {Ghenolea Muelleri, Benth). — Start's Creek 

 F. V. Mueller. 



5. B. paradoxa, F. v. M. {Sclerolaena paradoxa, R. Br.). — Carrington's 

 Landing, MacArthur River, G. F. Hill (No. 592), 20/9/1911. Specimens less 

 hairy than usual. 



37 miles E. of Hermansburg, Finke Rivfer, G. F. Hill (No. 107), 21-3/1911. 

 Dense bush up to 3 ft. 



Henbury Station. Finke River, G. F. HiU (No. 37), 7/3/1911. 



Near Hermansburg, Finke River, G. F. Hill (No. 106), 20/3/1911. 



10 miles W.S.W. of Stuart Range, G. F. Hill (No. 224), 2/6/1911. Near 

 Salt Lakes. Good fodder. 



6. B. sclerolaenoides, F. v. M. (Ghenolea sclerolaenoides, F. v. 31.). — 

 Hermansburg, Finke River, ; G. F. HUl (No. 104), 20/3/1911. 



7. B. spinosa, Ewart and Davies (Plate XII.). — Branched undershrub, 

 densely tomentose. Leaves sessile, narrow, obtuse, soft and tomentose, about 

 \-va.. long. Flowers in axillary clusters, not so many in a cluster as in B. 

 paradoxa. Fruiting perianths connate into a hard mass of about |-in. diameter, 

 each with 1 to 4 simple, bifid, or trifid, spines. Near to B. paradoxa, but ivith 

 fewer flowers in the clusters and with the horns very much stronger and divided. 



90 miles N. by |-W. of N.T. Survey Camp III., G. F. Hill (No. 346), 15/6/11. 



6. KOCHIA, Roth. 1801. 



(Maireana, Moq., 1840 ; Sclerochlamys, F. v. M., 1858 ; Pentodon, 

 Ehrenb., 1879). 



Horizontal wings all distinct. — 2. K. brevifoUa. 



Horizontal wings more or less perfectly united in a ring. 



Leaves mostly j to | in. long., linear or terete, tomentose or nearly glabrous 

 (sometimes small and slender) spreading. Perianth glabrous or tomentose. — 

 3. K. vUlosa. 



Leaves minute, distant. Branches spinescent. Perianth of K. villosa. — 

 1. K. aphylla. 



1. K. aphylla, R. 5r.— 65 miles N.E. of Camp IL, G. F. Hill, 8/6/1911. 

 Cotton Bush. 



2. K. brevifoUa, R. Br. — Hermansburg, Finke River G. F. Hill (No. 63) 

 11/3/1911. Cotton Bush. 



