52 



in various localities of the colony of Victoria. The following diag- 

 nosis and description resulted from the examination of the living 

 plant. 



Leaves ovate or oblong or lanceolate, glabrous, distinctly petioled ; 

 upper sepal ovate-cymbiform, acuminate, about twice as broad as 

 the lateral subfalcate-lanceolate sepals ; Idbellum sessile, cordate- 

 ovate, only near the axis glandular-tuberculate ; apex of the 

 column bidentate. 



Tuber globose-ovate or exactly ovate. Leaves 1-2" long, beneath 

 paler. Petioles generally from |-1" long, channelled. Peduncle 1" 

 long or longer, finally sometimes much lengthened, cylindrical. 

 Bracteole acuminate, about ^" long. Sepals all green ; the lower 

 from a broader base linear, long and gradually attenuated, channelled, 

 hardly however on the very summit terete, slightly longer than the 

 lip, about as long as and much narrower than the lateral sepals, almost 

 horizontal and lightly recurved at the apex ; upper sepal nearly 4'" 

 broad, sometimes faintly tinged with purple. Labellum hardly 

 longer than the column, towards the apex almost flat and some- 

 what purplish, towards the blunt greenish basis lightly inflexed ; its 

 two basal glands half-adnate, purple ; the terminal gland sessile, 

 roundish heart-shaped ; the two next ones oblong; the rest on a short 

 or very short stipes, brown-purple. Column pale-green, spatulate, 

 slightly curved. 



The differences, expressed by these notes from Mr. Archer's 

 beautiful illustration of the Tasmanian plant, seem not of specific 

 value ; but the Victorian plant may as a variety perhaps be dis- 

 tinguished as viridiflora. Dr. Jos. Milligan found C. Gunnii on 

 St. Mary's plains, the Hampshire hiUs, and on the alpine summit of 

 Ben Lomond ; it occurs also at Southport. 



Chiloglottis diphylla ranges in East Australia as far north as 

 Moreton Bay. 



It is not improbable that still other terrestrial Orchids will be 

 found existing in the Chatham-group. 



