THE FLORA OF THE NOBTHBBN TEEEITORY. 245 



Corolla rotate, 4-lobed. Stajn«ns 4. Anthers equally 2-celled, sagit- 

 tate. — 11. Scoparia. 



Corolla with a distinct tube or broaxily campanulate, lobes 5, nearly 

 equal. Stamens 4. — 12. Centranthera. 



Corolla with a distinct tube, often long, the limb 2-lipped. 



Cbrolla-tube, slender. Stamens 4. Ajithers, with one ve«rtdcal 

 usually linear obtuse cell. 



Corolla-tube, straight. Capsule obtuse. — 13. Buchnfera. 

 Cofollartube beat above th© middle. Capsule obtuse. — 15. 



Striga. 

 Corolla- tube elongated. Capsule acuminate, the beak often 



oblique. — 14. Rhamphicarpa. 

 Corolla-tube slender. Stamens 2. Anthers with one large mucron- 

 ate or aristate cell. — 16. Hemiarrhena. 



1. MIMULUS, Umt. 

 (Uvedalia, E. Br.) Monkey flower. 

 1. M. Uvedaliae, Benth., var. lutea, Benih.- — Swamps at the sources of the 

 MacArthur River, Providence Hill, and Macadam Range, F. v. Mueller. 

 ^■/:a M. debilis, F. v. M. ; M. gracilis, R. Br. (Slender Mon'-ey flower) ; re- 

 corded from North Australia in National Herbarium Census. 



2. AMBULIA, Lam. 



{LimnopMla, R. Br.). 



Lower leaves (or all) deeply divided. Flowers pedicellate. 

 Calyx segments l-nerved. — 1. A. gratioloides. 

 Leaves all undivided. 



Flowers pedicellate. Calyx-segments several -nerrved, striate. — 2. A. 



hirsuta. 

 Flowers sessile. CaJyx-segments united at the base, slightly striate. 

 3. — A. serrata. 



1. A. gratioloides, R. Br. — {LimnopMla gratioloides, R. Br.)- — Gulf of 

 Carpentaria, F. v. MueUer. 



2. A. hirsuta, Benth. (Stemodia hirsuta ; Limnophila hirsuta, Benth.). — 

 Thirty-five N.W. of Camp IV., Lander Creek, G. F. Hill (376), 24/6/1911; 

 Amhem's Land, F. v. MueUer. 



3. A. serrata. Gaud. {Stemodia tenuifhra, Benth. ; LimnopMla serrata. 

 Gaud.). — Cullen Creek, Gilnith and Spencer, July-August, 1911. 



Recorded. Victoria, Upper Roper and Fitzmaurice iiivers, and swamps 

 near Providence Hill, F. v. Mueller. 



A. sessiliflora, F. v M. ; A. Kingii, F. v. M. ; recorded from North Aus- 

 tralia in National Horbariuim Census. 



3. MORGANIA, R. Br. 



Flowers sessile or the pedicels rarely as long as the calyx. Corolla lips 

 as long as the tube, the upper one entire. 



Plant glabrous or nearly so. — 1. M'. floribunda. 

 Plant hoaiy-pubeeceait. — '4. M. pubescens. 

 Pedicels mostly longer than the calyx. 



Flowers rather large, the lips shorter than the tube, the upper one 



entire. — 2. M. glabra. • 



Flowers small, the Hps as long as the tube, the upper one shortly 

 2-lobed. — 3. M. parviflora. 

 12 



