Anthistiria.] ; CXLIV. GRAMINEX. 543 
the 4 involucral spikelets sessile, the outer glume of the fertile spikelet 
very rigid, scarcely nerved, obtuse, pubescent at the top with short rigid 
hairs. Awn as long as or often longer than in 4. cilia Many of 
the spikes reduced to the 4 involucral barren spikelets surrounding a 
rudimentary one. 
N. Australia, Islarids off the notth coast, R. Brown; Arnhem's Land, F. 
Mueller ; Port Darwin, Schultz, n. 155, 180, 217. 
3. A. avenacea, F. Muell. Fragm. v. 206.—Stems from a more or 
less silky-hairy or woolly base, 2 to 3 ft. high. Leaves very narrow, 
glabrous. Sheathing bracts narrow, membranous, glabrous, 1 to 2 in. 
ong. Spikes or clusters all on rather long, slender, glabrous or eiliate 
peduncles within the last braet. Barren spikelets either reduced to 
a single several-nerved rigid glume with a small hyaline one inside, or 
more developed, enclosing a male flower, the four involueral ones sessile. 
Fertile spikelets about 4 lines long, tbe rigid outer glumes, especially 
the lowest, densely villous with brown hairs. Awn long and rigid asin 
the two preceding species.—A. basisericea, F. Muell. Fragm. v. 201. 
N. Australia. Upper Victoria River, F. Mueller. ren E 
Queensland. Brisbane River, Bailey ; Condamine and Gwydir Rivers, etc., 
Leichhardt ; Rockhampton and other localities in the southern districts, O’Shanesy, 
Bowman and others ; Peak Downs, F. Mueller. š 
N. S. Wales. In the interior, Lachlan River, Fraser ; Liverpool plains, 4. Cun- 
ningħam ; from the Darling to Cooper's Creek, Neilson. 
entral Australia, Gosse. E 
W. Australia. King George's Sound, Barter; Swan River, Drummond, 1st 
coll.; Murchison River, Oldfield. 
` F. Mueller had at first distinguished the western plant by the silky-hairy base of 
e stem or lowest sheaths, which has since proved to be also in the eastern specimens. 
The Species is probably referrible to the section Androscepia, proposed as a genus by 
Brongniart for the Anthistirva gigantea, Cav. 
4. A. membranacea, Lindl. in Mitch. Trop. Austr. 88.—Quite 
glabrous, sometimes forming dense leafy tufts of 6 in., the branching 
2 ft. Leaves flat, appearing almost ar- 
Anders. Monogr. Androp. 24. 
N. Australia. Sturt's Creek, F. Mueller, Gregory ; Nichol Bay, Mrs. Crouch. 
Wath. d. On the Narran, Mitchell; Peak Downs, F. Mueller; Barcoo, 
N. S. Wales. Between the Darling.and Cooper's Creek, Neilson. 
