in the Bromes and their Brown Rust. 255 
long) of the palea. Total length of ‘seech without awn 
13-14 mm. : breadth about 3 mm. The awn ascends with 
a curved base, and the woolly ‘ seeds/ remaining adherent in 
the spikelet, stick together. Rachilla stout and woolly. 
I found B. macro s tacky s germinate very slowly and badly. 
Only five out of twenty* four had germinated in six days. 
(4) Libertia. 
B. arduennensis . I have as yet had no opportunity of 
experimenting with this species, which stands alone as the 
only member of its group, and so am compelled to leave out 
of account all reference to this group in the sequel. 
(5) Ceratochloa. 
B. unioloides. B. Schraderi. 
B. unioloides , H. B. and K. 
Is a species from the hotter parts of America. It is an 
ornamental plant, and, though valuable as fodder in warm 
lands, easily freezes in the north. It is common from British 
Columbia to Patagonia and Juan Fernandez, and is widely 
cultivated 1 . It has also been extensively introduced into 
South Africa, Australia, and Tasmania 2 . I have not as yet had 
sufficient material for a thorough examination of the species 
in detail, but the following appears to be, as it is accepted 
as being, the same species with, possibly, slight varietal 
differences. 
B. Schraderi , Kunth. 
B. Schraderi , Kunth, is the same as B. unioloides , H. B. and 
K., according to Index Kewensis — Cf. Kunth, Enum. PI. i. 
416, and H. B. and K., Nov. Gen. et Sp. i. 151. 
The seed is laterally compressed, the palea being closed 
like a mussel-shell, and smooth and much veined. 15-16 x 
2*5-3 M the awn a mere point 1 mm. long. In the mass pale 
1 Henasley in Challenger Report. 
2 See an excellent short account by Maiden in Agr. Gaz. of N. S. Wales, 
Dec. 1898. 
