100 THE FLOEA OF THE NORTHERN TERRITORY. 



19. P. obovatus, F. v. M. — Finke River, 12 miles W. of Horseshoe Bend, 

 G. F. Hill (No. 25), 2/3/1911. Herbaceous on flat country. 



Var. grandiflorum, 60 miles N.E. of Camp II. , G. P. Hill (No. 262), 7/6/191 1 . 



Note by Dr. Morrison : — ^In 262 venation of leaf indistinct on under side 

 of leaf. 



Perianth f in. Spikes If in. diameter. 



Hermansburg, Finke River, G. F. Hill (No. 86), 18/3/1911. 



Note by Dr. Morrison : — Perianth |-in. long. Inner perianth segments 

 densely woolly on inside. Spikes lengthening to 2 in. , 1^ in. broad, pedunculate. 



Recorded. N.W. Coast, Bynoe ; in the interior, M'Douall Stuart's Ex- 

 pedition. 



20. P. rotundifolius, V. v. M. — Near Hammersley Range, N.W. Coast, 

 F. Gregory's Expedition. 



P. parviflorus, F. v. M. ; P. divaricatus, F. v. M. ; P. striatus, F. v. M. ; 

 P. Forrestii, F. v. M. ; P. psilotrichoides, F. v. M. — Recorded in National 

 Herbarium Census from North Australia. 



3, TRICHINIUM, R. Br. 1810. 



( Arihrotrichium, F.v. M., 1863 ; Gomiotriche, Turcz., 1849; Hemisteirus 

 F. V. M., 1852). 



Perianths glabrous outside except a few hairs round the base. Leaves 

 linear. 



Spikes globular or scarcely ovate. 



Filaments dilated under the anthers. — 1. T. conioum. 

 Filaments fihform except at the base. — 2. T. corymbosum. 

 Spikes at first conical, at length cylindrical. — 5. T. spicatum. 

 Perianth enveloped in dense white cottony wool proceeding from the lower 

 half. Leaves oblong-lanceolate or obovate. 

 Spikes sessile. — 4. T. Murrayi. 

 Spikes pedunculate. — 3. T. gomphrenoides. 

 Perianths enveloped in long dense articulate hairs proceeding from the 

 lower half. Leaves narrow. — 6. T. villosiflorum. 



1. T. conicum, Spreng. — ^Islands of the Gulf of Carpentaria, R. Brown ; 

 Goulburn Island, A. Cunningham ; Port Essington, Armstrong. 



2. T. corymbosum, Spreng. — 40 miles W. of Camp IV., Lander Creek, G. F. 

 Hill (No. 369), 21/6/1911. 



Recorded. Islands of the Gulf of Carpentaria, R. Brown ; N.W. Coast, 

 Bynoe ; Victoria River and Sturt's Creek, F. v. Mueller. 

 Var. acutiflorum, Benth. — Arnhem's Land, M'Kinlay. 



3. T. gomphrerioides, F. v. M. — Hammersley Range, N.W. Coast, F. 

 Gregory's Expedition. 



4. T. Murrayi, F. v. if .—20 miles N.W. by N. of Meyer's Hill, Macdon- 

 nell Ranges, G. F. Hill (No. 515), 1/6/1911. 



5. T. spicatum, F. v. if .—Red Lily Lagoon, G. F. Hill (No. 837), 7/4/1912. 

 Recorded. Victoria River, F. v. Mueller. 



6. T. villosiflorum. — ^Nichol Bay, F. Gregory's Expedition. 



T. Macleayi, F. v. M. ; T. latifolium, R. Br. ; T. macrotrichus, F. v. M. 

 (in National Herbarium Census), and T. Whitei, Black (in Trans. Roy. Soc, 

 S.A., 1914), recorded from North Australia. 



