THE FLORA OF THE NORTHERN TEREITOBY. 101 



4. ACHYRANTHES, Linn. 



1. A. aspera, Linn. — Islands of the Gulf of Carpentaria, R. Brown ; 

 Goulburn Islands, A. Cunningham ; Victoria River, F. v. Mueller ; Escape 

 Cliffs, Hulls ; Nichol Bay, N.W. Coast ; Ridley's Expedition ; Port Darwin, 

 Schultz. 



Washerman's Plant of India. 



5. ALTERNANTHERA, Eoksk. 1775. 



( Allaganthera, Mart., 1814 ; Illecebrum, Spreng., 1817 ; Lithophila, 8w., 

 1788; Pityranthus, Mart., 1817 ; Mogiphanes, Mart.; Telanthera, B. Br. 



Staminal cup without teeth between the filaments. 

 Perianth perfectly glabrous. 



Plant glabrous or slightly pubescent at the nodes or in 2 decurrent 

 lines. Leaves narrow. 



Perianth-segments and bracteoles (above 1| Unes long), with fine 

 points. Spikes at length several together in dense globular 

 clusters. — 6. A. nodi flora. 

 Perianth-segments and bracteoles (1 line long or under), broad 

 with short points. Spikes small, at length cyUndrical and 

 scarcely clustered. — 2. A. denticulata. 

 Plant more or less hairy or rarely glabrous. Leaves mostly broad. 

 Rachis of the spire wooUy. — 5. A. nana. 

 Perianth-segments enveloped in long wooUy hairs proceeding from the 

 base (often concealed in the young spike by the bracteoles). 



Bracteoles shorter than the perianth. Perianth-segments all equal 



(about 1 line long) and glabrous inside. — 1. A. angustifolia. 

 Perianth-segments 1| to 2 lines long, the inner ones smaller and 

 woolly inside at the base. — 7. A. polycephala. 

 Staminal cup with prominent teeth or lobes between the filaments. 



Spikes axillary, shortly pedunculate, ovoid. Lobes of the staminal 



cup much shorter than the filaments. — 3. A. leptophylla. 

 Spikes on long peduncles, globular. Lobes of the staminal cup 

 rather longer than the filaments. — 4. A. longipes. 



1. A. aTvgustifolia, R. Br. — ^Islands of the Gulf of Carpentaria, R. Brown ; 

 Sturt's Creek, P. v. Mueller. 



2. A. denticulata, R. Br. ( Var. micrantha, Benth). — Arnhem's Land, 

 F. V. Mueller. 



3. A. leptophylla, Benth. — Sturt's Creek, F. v. Mueller. 



4. A. longipes, Benth. — ^N.W. Coast, Bynoe. 



5. A. nana, R. Br. — Nicholson River, and Sturt's Creek, F. v. Mueller. 



6. A. nodiflora, R. Br. — Lower MacArthur River, G. F. Hill (No. 679), 

 8/11/1911. 



Edith Creek, Gilruth and Spencer, July- August, 1911. 

 Hugh River, Macdomiell Ranges, G. F. HiU (No. 134), 4/5/1911. 

 Recorded. Sturt's Creek, F. v. Mueller ; Victoria River, Flood ; in the 

 interior, M'Douall Stuart's Expedition ; Albert River, Henne. 



7. A. polycephala, Benth. — Greville Island, Regent's Harbour, N.W. 

 Coast, Bynoe. 



