692 Mr. Brown on the Organs and Mode of 



the same statement is repeated ; and in this work it also 

 appears that he regards the glands to which the pollen masses 

 become attached in Ophrydea; as derived from the stamen, 

 and not belonging to the stigma*, as in 1810 I had described 

 them. It would even appear, from a passage in his syste- 

 matic workt published in the same year, that he considers the 

 analogous glands, existing in most other tribes of Orchideae, 

 as equally belonging to the stamen: in his "Introduction," 

 however, he refers them to the stigma in all cases except in 

 Ophrydeae. 



Towards the end of 1830 the first part of Mr. Francis Bauer's 

 Illustrations of Orchideous Plants, edited by Mr. Lindley, was 

 published. 



From this work, of the importance and beauty of which it 

 is impossible to speak too highly, it may be collected that 

 Mr. Bauer's opinion or theory of impregnation in Orchideae 

 does not materially differ from that of Batsch, Richard, and 

 other more recent writers. From one of the figures it appears 

 that this theory had occurred to him as early as 1792 ; and in 

 another figure, bearing the same date, he has accurately repre- 

 sented the structure of the grains of pollen in a plant belonging 

 to Ophrydeae, a structure which I had not ascertained in that 

 tribe till 1 806. Although Mr. Bauer's theory is essentially the 

 same as that of Batsch and Richard, yet there are some points 

 in which it may be considered peculiar; and chiefly in his 

 supposing impregnation to take effect long before the expan- 



* "The pollen is not less curious. Now we have it in separate grains, as in other 

 plants, but cohering to a mesh-work of cellular tissue, which is collected into a sort of 

 central elastic strap ; now the granules cohere in small angular indefinite masses, and 

 the central elastic strap becomes more apparent, has a glandular extremity, which is 

 often reclined in a peculiar pouch especially destined for its protection." — Introduct. 

 to Nat. Syst. of Bot. p. 263. 



f Gen. and Sp. of Orchid,, Part I. p. 3. 



sion 



