17 
short basal sheaths. S. variabilis, although of very varying 
habit, possesses leaves which are generally longer, coarser and 
more loosely convolute than in 8S. falcata, their lower epidermis 
being smooth or slightly pubescent but not scabrid, whilst the 
tufts are less dense and the basal sheaths are longer. Continued 
study will be necessary to determine the value of those differences. 
Comparison of this material with S. Drummondii has proved its 
distinctiveness from that species. 
The specimens enumerated under S. variabilis, collected at 
Kauring by Stoward (nos. 361, 459, 466), might rather be included 
in S. falcata on account of the slightly scabrid leaves, but they 
represent a coarser plant than the type and do not conform well 
with either species. 
5. §. Drummondii, pies Syn. Glum. i. 128. S. Luehmannii, 
eser in Vict. Nat. xvi. 15 
N. 8S. Watzs. cans Plains, (coll. ?). 
Victoria. Little Desert, Lowan, 19.x1.1899, Reader. 
Reader’s plant quoted above is no doubt an authentic speci- 
emen of S. Luehmannii though collected a year later than the 
type (“‘ Sandy Desert, Lowan, 1898’’). On the sheet examined 
there are two plants, both densely tufted with softly pubescent 
_ leaves and sheaths. The smaller of the two has convolute leaves 
about 7 cm. long and about 3 mm. wide when flattened out, and 
agrees with the type of S. Drummondu (Drummond 378). The 
jarger plant has convolute lower leaves, while the upper are 
mostly unrolled, about 17 cm. long and 5 mm. wide. The flowering 
culms are very stout, loosely enclosed by sheaths up to 1-4 cm. 
bee This is a far more luxuriant form than the typical S. 
mondvi, but intermediates are seen in the specimens 
Collected by J. M. Black in S. Australia. 
The chief esting mans character emphasised by Reader in 
his description of 8S. Luehmannii,—the toothed unequal empty 
glumes,—is also found in S. Drummondit, Steud. 
17. ~ platychaeta, Hughes in Kew Bull. (1921) 16. 
N. 8S. Wares. Murrumbidgee River, 1886, Bennett. 
18. §. scabra, Lindl. in Mitch., Trop. Austral. 31. 
N. S. Warzs. Gilgunnia, Baker; Nyngan, Baker ; > 
Western area,” 1912, Boorman. 
Comparison of further material shows that the length of the 
ligule varies from 1-3 mm. and cannot therefore be relied upon 
as a character for diagnosis if not accompanied by other distin- 
guishing features. Otherwise the specimens quoted above are 
fairly uniform and in keeping with Mitchell’s type. 
20. S. densiflora, Hughes in Kew Bull. (1921) 18. 
N. S. Wares. Lake Andgellica, Boorman. 
a 16738 “B 
