62 
The Queensland Naturalist. 
March, 1935. 
woomba, ” about 100 miles W. of Brisbane. Mr. F. A. 
Weinthal collected plants in this locality some years ago, 
but after a more recent visit reported that he was unable 
to find any. One of Mr. Weinthal ’s plants has now been 
in my possession for 4 years, and in 1933-4 it flowered 
freely. 1 have no doubt that it represents Bailey \s type. 
It seems certain that white-flowering forms of D. King- 
ianum Bidw. have often been mistaken for D. delicatum , 
and an article appeared in the English “Orchid Review’ ’ 
a few years ago, demonstrating that a form accepted in 
England as I). delicatum must be placed in D. Kingianum. 
The arguments were unimpeachable; but the form dealt 
with was not the plant collected by Mr. Weinthal in 
Bailey’s locality, and was not, in my opinion, Bailey’s D. 
delicatum at all. It should be remembered that originally 
(Proc. Roy Soe. Q’land, i.) Bailey described his plant as 
I), speciosum , var. delicatum , subsequently raising it to 
specific rank. Is it likely that botanist of his distinction, 
familiar as he was wth D. speciosum and D, Kingianum , 
could mistake a form of the latter for a variant of the 
former? The point is surely hardly open to argument. 
It was probably the rarity of I). delicatum which led to 
the supposition that a certain white-flowering form of D . 
Kingianum must be Bailey’s new species. Whether the 
genuine D. delicatum has been found elsewhere than in 
the type locality may perhaps be open to question. A 
specimen from Mrs. H. Curtis at Tamborine Mountain 
seems to agree with Mr. Weinthal’s Toowoomba plant, 
but in all other cases specimens actually received by me 
as I), delicatum seem beyond doubt to be I). Kingianum. 
I). Kestevenii was discovered on the rocks of the 
Alum Mountain at Bullahdelah, not far from Port Stephens, 
N.S.W. It has not been seen elsewhere, though exhaustive 
search has been made by collectors in many “likely” areas. 
The distance from Bullahdelah to Toowoomba, in a direct 
line, is approximately 350 miles. The Alum Mountain 
has an elevation of less than 1,000 feet, and is within 12 
miles of the ocean. The Toowoomba highlands are 100 
miles from the ocean, and reach 3,000 feet. Thus the con- 
ditions of the two plants are very different, and there is a 
gap of 350 miles between them — a gap reduced very 
slightly even if the Tamborine specimen referred to, be 
D. delicatum. During a recent trip to the Bellinger River 
and the Dorrigo highlands, about half-way between Bullah- 
delah and Toowoomba, I failed to find any Dendrob 
closely resembling either D. delicatum or D. Kestevenii. 
I have tabulated below what seem to be the main dis- 
tinctions between the two plants. In both cases there is 
what we might term circumstantial evidence of an origin 
