% 
Pritzelia.] CXXIX. PHILYDBACEJE. 75 
only a very short point, distichous and imbrieate when young, forming 
an interrupted terminal spike when in flower. Perianth-segments very 
roadly ovate, not at all or scarcely exceeding the braet. Stamen con- 
siderably shorter.— PAilydrum pygmeum, R. Br. Prod. 265; Heteria 
pygmea, Endl. in Pl. Preiss. ii. 45 
Ww. Australia. King George's Sound, R. Brown, Preiss, n. 2223, F. Mueller ; 
Swan River, Drummond, lst coll. and n. 739, 740; Lake Muir, Muir. 
9. HELMHOLTZIA, F. Muell. 
Perianth-segments faintly several-nerved, ovate-lanceolate, mem- 
branous, almost petal-like, the posterior one with 2 prominent nerves 
near the margin. Stamen almost hypogynous at the base of the anterior 
gment; filament very short and flat ; anther erect, ovate-oblong, much 
longer than the filament, the cells:parallel, not twisted, opening inwardly 
in longitudinal slits; staminodia petal-like, short and broad, very shortly 
connate with the anther-bearing filament. Ovary perfectly 3-celled ; 
style subulate with a minute terminal stigma. Capsule nearly globular, 
8-furrowed, the pericarp rather thick but probably at length 3-valved. 
Seeds numerous, small, dark-brown, smooth.—Tall erect perennial, with 
long almost radical flag-like leaves and numerous small flowers in a ter- 
minal pyramidal panicle. 
id e Australian species, which is endemic, the genus includes the Philydrum 
caer inom, Hook. Bot. Mag, t. 6058, of uncertain origin, but believed to have been 
m the Pacific Islands. 
l. H. acorifolia, F. Muell. Fragm. v. 208.—Stems erect, simple 
except the inflorescence, 2 to 3 ft. high, quite glabrous or with a slight 
g and à to near 1 in. broad, their short sheathing bases 
Capsules 2 to 3 lines diameter, woolly-villous, not seen open althoug 
e seeds appear ripe with a perfect embryo. Seeds oblong, many of 
cate or almost hooked at the apex, and sometimes narrowly 
Queensland. Rockin 
ckingham Bay, Dallachy. 
N. S. Wales. Richmond River, Wilcoz. 
Orprr CXXX. XYRIDEJE. 
Character and geographical range of the order the same as that of the 
us Xyris, i fa 
