192 THE FLORA OF THE NORTHERN TERRITORY. 



Calyx-lobes strictly valvate. Outer coating of the seeds usually remaining 

 adherent to the endocarp. Leaves glabrous. Flowers in short panicles. 



Calyx narrow, lobes lanceolate, shorter than the tube. Leaves palm- 



ately 5 or 7-lobed. — 6. B. trichosiphon. 

 Calyx broadly campanulate, deeply lobed. 



Leaves ovate-lanceolate, lobeless. — 5. P. populneo-acerifoHus. 

 Leaves entire, ovate or cordate, or 3-lobed, acuminate. Flowers 

 tomentose outside when young, glabrous inside. Follicles 

 stipitate.^ — 3. B. popuhieus. 

 Leaves cordate-acuminate, entire. Flowers tomentose outside, 

 hirsute inside at the base. FolKcIes nearly sessile. — 

 1. B diversifoUus. 



1. B. divernfolitos, R. Br. — Careening Bay, N.W. Coast, A. Cunningham; 

 Victoria River and Poiat Pearce, F. v. MueUer. Fl8.me tree. 



2. B. discolor, F. v. M.- — Buckland's Tableland, A. C. Gregory. 



3. B. populneus, B. Br. — Darwin, G. F. Hill (3rd Series, No. 19), 

 8/8/1913 Sterhng Creek, Gikuth and Spencer, July- August, 1911. Top 

 Spring, G. F. Hill (No. 541), 31/8/1911. " Kurrajong." 



4. B. paradoxus, Schott. {Sterculia ramiflora, Benth.).- — ^Near Darwin, 

 Gih-uth and Spencer, July-August, 1911. 



80 miles N. of Powell's Creek, G. F. Hill (No. 443), 6/7/1911. 

 Recorded. Brunswick and Vansittart's Bays, N.W. Coast, A. Cunning- 

 ham ; Victoria River and Point Perron, F. v. Mueller. 



5. B. populneo-acerifolius, F. v. if .—Top Spitog, G. F. Hill (No. 547), 

 31/8/1911. 



^j Head of MacArthur River, G. F. Hill (No. 559), 3/9/191 1 . A large tree. 

 r" The specimen is in leaf only, and the leaves appear to agree with the. above 

 species, except that the veins are somewhat tomentose. The apparent fruits 

 are curious pointed insect galls, an inch or more in length. 



6. B. trichospihon, Benth. {B. platanoides, R. Br.). — Abel Tasman River, 

 F. V. MueUer ; Nichol Bay, F. Gregory. Broad-leaved Bottle-tree. 



Brachychiton incana, R. Br., and Heritiera litoralis, Dry. ; recorded 

 from North Austraha in National Herbarium Census. 



DILLENIACE.ffi. 



Perfect stamens free or nearly so, more than 10, or, if fewer, on one side of 

 the pistil.^ — 1. Hibbertia. 



Perfect stamens 10 or fewer, in a complete ring round the pistil. — 2. 

 Pachynema. 



1. HIBBERTIA, Andr. 



{Hemistemma, Pleurandra and Hibbertia, D.C. ; Ochrolasia,Turcz. ; 

 Hemistephus, Drummond). Guinea Flower. 



Section I. Hemistemma. — Perfect stamens and staminodia all on one 

 side of the carpels, the staminodia outside. Peduncles mostly 2 or more- 

 flowered. AH tropical species. 



Leaves oblong or lanceolate, flat or the margins slightly recurved. 

 Leaves obtuse. — 2. H. Brownei. 



Leaves acute or mucronate, white underneath. — 4. H. dentata. 

 Leaves narrow-oblong or linear, the margins revolute. 



Leaves oblong-hnear, thick, about |-in. long. — 6. H. ledifolia. 

 Leaves narrow hnear, about 1 in. long. 



