Mierolena.] CXLIV. GRAMINER. 553 
or narrow, 2 to n.. long, the pedicels and short Sct mi bend 
Outer persistent iuias unequal, the low o $ line, to 
1; lines long, the 3 next glumes a lioet close above the eius ones with 
ly 5-nerved, the 3rd with a short point or glume, the 4th 
er longer with an awn sometimes as long as the glume, the 5th 
ES but not awned, 6th or flowering glume shorter, keeled, faintly 
nerved. Stamens (always ?) 2.— Diplaz tasmanica, Hook. f. * 
ii. 105, t 155, B ; Ehrharta diarrhena, F. Muell. Fragm. vii. 89. 
Tasmania. Recherche ind Gunn ; South Port, C. Stuart. 
Var. subalpina, F. Mue Leaves rather longer. Stem short. Spikelets 
smaller than in the mor form,—Halfway up Mount Lapeyrouse, Oldfield ; 
e St. Clair, Gulliver. 
49. TETRARRHENA, R. Br. 
Spikelets 1-flowered, yis or very shortly pedicellate in a simple 
spike or in a sca reely b anched spikelike panicle, the rhachis of the 
spikelet artieulate above the 2 outer glumes. Glumes 6, 2 outer small 
and agence the 8rd various, the 4th usually the largest and rigid, 
the 5th similar but usually smaller, the 6th narrower but keeled like 
neg none of them awned. Flower terminal. alea. Lodicules 
large, very thin. Stamens 4. Styles short, distitiok Grain enclosed 
in the larger glumes but free from them 
The genus is pres to Australia. xi is euni allied to is euer LAC EAM Ehrhar iar 
with which F, Mueller, following = gel, unites this an ceding genus, but 
the dimerous not patie androeci sees er with the arena range, appear 
Sufficient to maintain them as distinc on 
Larger glumes obtuse or scarcely a 
Third glume about half as epa as m 4th. Stems E 
om a creeping base ascending to about 1 ft. . 1. T. distichophylla. 
5th. 
and entangle d. Outer glum obtuse, 
equ . 2, T. juncea. 
Stems erect. Outer glumes acute, “nearly ‘equal. 
estern specie s Ps T. levis. 
Larger glumes acutely I ao sux equ eo, S. du Role, 
disticho phylla, E. Br. Prod. 210.—Stems tufted or 
branching and creeping at the base to a great extent, ascending to from 
to above 1 ft, rather rigid but slender. Leaves chiefly at the 
; s or on decumbent branches, short, almost — Nis hairy. 
lon 
