THE FLORA OF THE NOETHERN TERRITORY. ^ 277 



13. COLEOCOMA, F. v. M. 1857. 



1. C. Centaurea, F. v. M.—90 miles N., J W. of Camp III., G. P. Hill 

 (No. 348), 15/6/1911. 



Recorded. Sturt's Creek, F. v. Mueller. 



14. EPALTE8, Cass. 1818. 



{Eihuliopsis, F. V. 21., 1861 ; Gfynaphanes, Steetz., 1864 ; Litogyne, 

 Harv., 1863 ; Pachythelia, Steetz., 1864 ; Sphaeromorphaea partly.) 



1. F. ansimlis, Less. — Camp III., Lander Creek, G. F. Hill (No. 297), 

 10/6/1911. Spreading Epaltes. 



Borroloola, G. F. Hill (No. 611), 9/10/1911. 



Recorded, ^'ictoria River to Amhem's Land, F. v. Mueller ; in the 

 interior, M'DouaU Stuart's Expedition ; Islands of the Gulf of Carpentaria, 

 R. Brown. 



15. SPHAERANTHUS, Vaill. 



Pubescent or hirsute. Involucral bracts ending in a subulate cihate 

 point. Disk- florets (always ?) sterile. — 1. S. hirtus. 



Glabrous. Involucral bracts scarious, often jagged at the end. Disk- 

 florets (always ?) fertile. — 2. S. microeephalus. 



1. S. hirtus, Willd. {S. indicus, L.).- — Victoria River and Gulf of Carpen- 

 taria, F. V. Mueller ; Albert River and Bentinck's Island, Henne. 



2. 8. microeephalus, Willd. (S. africanus, L.).- — Low flats, Alligator 

 River, and Van Diemen's Gulf, N.W. Coast, A. Cunningham ; Islands of the 

 Gulf of Carpentaria, R. Brown ; Albert River, F. v. Mueller. 



16. PTEROCAULON, Ell. 1824. 



(Chlaenobolus, Cass., 1827 ; Monenteles, Lahill., 1S25 ; Sphaeranthoides, A. 

 Curm., 1836.) 



Clusters of flower-heads small but numerous, forming a terminal dense 

 interrupted spike. — 3. P. verbasoifoUum. 



Clusters of flower-heads solitary, globular or ovoid-oblong. 

 Plant tomentose or wooUy. Decurrent wings entire. 

 Clusters globular. — 2. P. spacelatum. 



Plant glandular -pubescent, not tomentose. Decurrent wings toothed. 

 Clusters ovoid or oblong, large. Disk- florets solitary. — 1. P. 



glandulosum. 

 Clusters globular, rather small. Disk- florets usually 2. — 3. P. 

 sphaeranthoides . 



1. P. glandulosum, F. v. M. — ^Macdonnell Ranges, G. F. HiU (No. 171), 

 12/5/1911. 



Var. velutinum. —Ha.eisVs Bluff, G. F. Hill (No. 184), 17/5/1911. This 

 specimen is extremely hairy. The hairs are most abundant on the stem, 

 and on the upper surface of the leaf, making the leaf feel thick and soft. None 

 of the Herbarium specimens is as hairy as this one. 



2. P spacelatum, Benth and Hook. — 11 mile Creek, near Katharine, 

 Gilruth and Spencer, July -August, 1911. 



Recorded. Nichol Bay, N.W. Coast, Herb. F. v. Mueller ; Victoria River 

 and M'Adam Range, F. v. Mueller ; Albert River, Henne ; Gulf of Carpentaria, 

 Landsborough ; Attack Creek and M'Donnell Ranges, M'Douall Stuart's 

 Expedition. 



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