give in the words of Mr. Artan Cunninenam, in the letter — 
above quoted, and dated April, 1832. ‘ When I was in — 
New Zealand in 1826, I found on the bank of a stream 
which is received into the Bay of Islands, a Prerostyuts, 
remarkable no less for the large size of its cauline leaves, 
than for its height, which exceeded a foot. On my return 
to Sidney, I carried with me some roots of this unpublished 
plant, which I transmitted to Kew, by an opportunity which 
then offered. There it had been long supposed to be dead, 
when, to the surprise of all of us, it has thrown up a perfect 
flower-stem, which I carried to Mr. Bauer, who has not 
only made a beautiful drawing of it, but has most kindly 
.. me to send it to you to publish in the Botanical 
agazine.” 
At this time Mr. Baver had not examined the grains of 
Pollen; but when he had done so, and found them to be 
very different from those of Orchideous plants, he most 
liberally communicated his exquisite drawing of them 
through Mr. Cunnincuam ; accompanying it with the fol- 
lowing note: “ I have now on the 2d of May, examined the 
Pollen Grains with Proxssrz’s grand microscope, and, to 
-Iny great surprise, found a total deviation from those of all 
the hundreds of specimens of Orchideous plants I have yet 
investigated. These grains, in their ordinary form, consist 
of three or four-celled corpuscules, or as Botanists express 
it, “e spherulis quaternis conflatis’ (see Brown, Prodr. p. 
310.). I therefore send you herewith, a sketch of some 
grains of your plant, which are represented as seen under 
water, except that at A, which is in a dry state, when it ap- 
pears collapsed. This I consider an important circumstance, 
and could not be detected by Botanists possessed only of 
glasses of moderate power.” 
These grains of Pollen as given he ified 570 times lineally, 
or 324,900 times superficially ! orang ae 4 
Mr. Cunnincuam had named the species P. macrophylla: but on 
showing the drawing to Mr. Brown, that learned Botanist recognized 1t 
as the same with a specimen found by Sir JosepH Banxs in New 
Zealand, at the time he accompanied Captain Cook round the world in 
the Endeavour, and of which the plant, or the drawing, still exists in the 
Banksian Museum. Mr. Cunnincuam then readily consented to the 
wishes of Mr. Brown, that it should bear the name of its first dis- 
coverer, 
—— 
———— 
— 
BP acta er of PrERosTyuis ; nat. size. 2. Front view of the Fructification 
lium, nat. size. 3. A side view of the same; nat. size. 4. A front view of 
ive parts a! Fructification, with the Ale forcibly expanded ; magnified two times sf 
yeep ne - *ront view of the Labellum magnified two diameters. 6. Back view o 
pias pags ee two diameters. 7. Front view of the Anther, the Stigmatic Gl 
mit pia meskes of the Columna, magnified six diameters. 8. A side view of the 
bicd tore _ Six diameters. 9. Transverse Section of a portion of the Ovariums 
magnified four diameters, (F,BauzR). 10, Grains of Pollen as described above- 
