three inches in dameter. It is very near my D. veratrifolium, 
but differs in having* much shorter petals and a very acute lip. 
5. D. antennatum (Lindl. 1 c.); foliis lanceolatis carnosis oblique emarginatis 
racemo oppositifolio brevioribus, sepalis acuminatis, petalis linearibus 
duplo longioribus reflexis, labello trilobo venis Selevatis rectis per axin; 
lobo medio ovato acuto piano 3-costato. 
Also among Mr. Hind’s New Guinea collections. It is a 
most curious thing, with flowers having their long horn-like 
petals directed backwards, and their sepals forwards. The 
petals are two inches long, and scarcely half a line wide. The 
leaves are succulent, brittle, and veinless when fresh. 
6. D. undulatum (R. Brown Prodr. 332. L. no. 62. D. discolor, Lindl. in 
Bot. Reg. 1841, t. 38.) ; foliis ovato-oblongis emarginatis, racemis lon- 
gissimis, sepalis petalisque undulatis, labelli trilobi lobis acutis interme- 
dio lanceolato, lineis quinque elevatis intermedia apice flexuosa. 
A tropical New Holland species, with singular dingy yel- 
low-brown flowers, of little beauty. It has also been found 
in Java. 
7. ? D. affine (Onychium affine, Decaisne herb, timor. 37.) ; "foliis lineari-ob- 
longis acutiusculis coriaceis, pedunculo foliis triplo longiore oppositi- 
folio ? laxifloro, floribus spicatis ; perianthio erecto, segmentis exterio- 
ribus lineari-lanceolatis acutis, interioribus subobovatis rotundatis mucro- 
nulatis ; labelli unguiculati lobis 3, medio lineari-lanceolato, lateralibus 
subrotundis.” 
As M. Decaisne compares this with D. Mirbelianum, it 
probably belongs to the present section, notwithstanding that 
he conjectured the stem to be bulbous. The petals are said 
to be obovate and mucronate. It is a native of Timor, with 
acute linear-lanceolate leaves. 
