580 CXLVII. TRIURIDEyE.— CXLIX. NAIADACE/E. 



Lemna, Linn. — Duckweed. 



trisulca, Linn. (Fig. 559.) 

 minor, Linn. (Fig. 560.) 



oligorrhiza, Kurz. — The surface of still water is often covered 

 with this plant. (Fig. 561.) 



Series VI.— APOCARP/E. 



Order CXLVIL— TRIURIDEJE. 



Sciaphila, Bhune. 



australasica, Hcnisl. 



Order CXLVIIT.— ALXSMACE^. 



Tribe I. — Alismeje. 



Alisma, Linn. — Water Plantain. 



acanthocarpum, F. v. M. 



oligococcum, F. v. M. 



reniforme, Don. 

 Damasonium, Juss. 



australe, Salisb. 



Trice II. — Butomete. 



Butomopsis, Kunth, 



lanceolata, Kunth. — But omus lanccolatus. Roxb. 



Order CXLIX. -NAIADACE^. 



Tribe I. — Juncagine.-e. 



Triglochin, Linn. — Arrow-grass. 



Section I. — Eutriglochin. 

 striata, Ruiz et Pav. 

 centrocarpa, Hook, 

 var. calcitrapa, Benth. 



Section II. — Cycnogeton. 

 procera, R. Br. — " Wanna" of Cape Bedford, " Beega" of 

 Cardwell, and " Anamum" of Musgrave River natives 

 (R.B.H.). 

 var. dubia, Benth. 

 Maundii, F. v. M. = Maundia triglochinoidcs, F. v. M.,. 

 Fragm. i. 23. (Fig. 562.) 





