410 CXXII. IRIDER. [ Orthrosanthus. 
4. ORTHROSANTHUS, Sweet. 
Perianth regular, with a short tube and 6 nearly equal spreading 
segments. Filaments short, free; anthers oblong, the cells contiguous. 
Styles or rek branches linear, ‘almost filiform, Free dilated and 
denticulate at the end, shorter than the anthers and alternate with | 
he Capsule sessile or nearly so, oblong, 3-a aed opening. loculi- 
cidally i in 3 valves.— Herbs with a "perennial short rhizome. Leaves 
present) opposed each to a flower on the same n 
The genus is limited to Southern and Western Australia. It is been generally re 
fe isyrinchium, but besides jaa. t stamens and the very different capsules, the 
inflorescence gives ita a ve ery distinc 
Spikes with several (more than s pus the M bracts 
usually brown-scarious at the end. Capsule obtu 
Plant glabrous usually tall. Spikes all eai or both sessile 
and pedunculate in the same bract 1. O. multiflorus. 
Plant low, the leaves woolly on the edge when; young. Spikes : 
ew, all Potion. or vsp one sessile 2. O. Muelleri. 
e en 
Leaves 2 to 24 lines broad. Outer bracts of the spikes white- 
scarious at the ui capsule shortly and obtusely acuminate 3. O. laxus. 
Leaves 4 to 1 line broad. pus rmost bract green to the end. 
Capsule distinctly pex 
Lim 1-flowered, v bel sumeroas, ‘all more or less s pedumculate, 
m tall. Leaves long . de Wf PO TR 
l. O. multiflorus, Sw t, Fl. Austral. t. 11. ppv ve 
4, O. gramineus. 
one u ually sessile Meus each bract along the main rhachis = 
acinidint ied by 1 others within the same bract, but on rig! 1 
peduincles often longét pu the canal ot bract.  Outermost bract o 
at the top; inner ones entirely ous. tabs about 1 m 
long above the ovary; segments of the limb een pem 2 in. long, the 
outer ones rather kartonok than the inner. ary contr 
s. Aiii alia. T we ER. Brown, Baxter, F. Mueller ; Portland and 
Cape Nelson, Allitt. ll 
W. Australia, Cape Naturaliste, Oldfield; Scott's brook, Thomas river, M: 
: 
: 
2 outer bracts, the second as well as the inner r membranous ones diner 
mE Mur 
CERA 
