302 MR. J. G. BAKER ON THE 
nervatis, floribus laxis, gluma florifera lanceolata 7-nervata profunde bifida 
arista elongata geniculata instrueta. 
An erect perennial, with the habit of Arrhenatherum avena- 
ceum. Basal leaves with a slender setaceous lamina a foot or 
more long. Stems 2feet long, with about three leaves, each witha 
long close sheath and along narrow linear free blade. Panicle half 
a foot long, with numerous short ascending capillary branches, the 
lower with five or six spikelets. Spikelets 3 in. long, exclusive of 
the awns ; empty glumes lanceolate, acute, 3-nerved, 1-1 in. long; 
rhachis pilose ; flowers not more than 3 fertile, with a distinctly 
7-nerved deeply bifid flowering glume with a patulous geniculate 
awn longerthan itself springing from the notch.— Central Mada- 
gascar, Baron 2081! 
BROMUS AVENOIDES, n. sp. 
Perennis, glaber, caule elongato, foliis paucis elongatis anguste lineari- 
bus, paniculz laxissimæ ramulis paucis ascendentibus, spiculis 5-6-floris 
pedicellatis, glumis sterilibus magnis lanceolatis, floribus laxis, gluma 
florifera lanceolata 7-nervata profunde bifida arista geniculata elongata 
instructa. 
A tufted perennial, glabrous in all its parts, with slender erect 
glabrous stems 2-3 ft. long. Basal leaves with a setaceous lamina 
a foot long; stem-leaves about three, with long close sheaths 
andalong free narrow linear lamina. Panicle very lax, halfa 
foot long, with few slender ascending capillary branches, the lower 
2-3nate, bearing three or four spikelets, all distinctly stalked. 
Spikelets 2-1 in. long exclusive of the awns; empty glumes lan- 
ceolate, acute, 3-nerved, 4—3 in. long; flowers usually five or six; 
rhachis slender, densely pilose; flowering glume lanceolate-navi- 
cular, deeply bifid, glabrous, distinctly 7-nerved, 3 in. long, 
bearing an erecto-patent or spreading geniculate awn above 4 in. 
long from the bottom of the notch.— Central Madagasear, Baron 
2034! Habit of the European B. patulus, Mert. & Koch. This 
species and the last are remarkable in this large genus by their 
deeply bifid flowering glumes. 
NASTUS BORBONICUS, Gmel., var. EMIRNENSIS. 
This Bamboo, which is common in the forests of Central Ma- 
dagasear, and of which Dr. Parker has procured fine specimens 
in flower, differs only from the type of the species (which is com- 
mon in the uplands of the interior of Bourbon) by its more slender 
habit, narrower leaves, and smaller spikelets. The Bourbon 
