HYMENOPHYLLUM DILATATUM.
S w a r t z . S c i i k u h r . W i l l d e n o w . H o o k e r a n d G r e v i l l e .
P L A T E L X X .
Trichomanes dilataium.
íTymeMopíyíÍMM—Membrane-leaved.
F o e s t e e . B l u m e .
Dilataium—Dilated.
O n e of the largest and most beautiful o f tbis lovely genus,
growing among moss, decaying vegetable matter, and on rocks
and trunks of trees in woods of New Zealand and Java.
Tbe fronds are large, broad, and oblong; erect, and tripin-
natifid; tbe primary divisions ovate-lanceolate; tbe segments
attenuated, gracefully drooping, and entire.
Stipes and rachis erect, pale green in colour, and wdnged.
Length of frond from fourteen to twenty inches; colour pale
green.
I n v o l u c r e s a b u n d a n t o n t h e u p p e r h a l f o f t h e f r o n d , t e r -
m i n a l , o r b i c u l a r , t h e l o w e r h a l f c u n e a t e , a n d b u r i e d i n t b e
f r o n d ; t b e v a l v e s s e m i - o r b i c u l a r a n d e n t i r e ; r e c e p t a c l e s c l a v a t e .
Rhizoma smooth, and brownish straw-coloured.
Requires a very humid, shady, close atmosphere, ranging in
temperature from 40° to 65°.
For fronds my thanks are due to Messrs. Backhouse, of
York.