OllAP. IV. GOODYEKA EEPENS. 103 



emitting, whilst still within the anther-cells, their 

 tubes, which penetrate the stigma ; and this occurs even 

 in the bud. This species, however, is probably visited 

 by insects, and occasionally crossed ; for the labellum 

 contains nectar. E. microphylla is intermediate in 

 structure between E. latifolia, which is always fertilised 

 by the aid of insects, and E. viridiflora, which does not 

 necessarily require any such aid. The whole of this 

 memoir by Dr. H. Miiller deserves to be attentively 

 studied. 



Epipopiutn gmelini. — This plant, which has only 

 once been found in Great Britain, has been fully de- 

 scribed by Dr. Eohrbach in a special memoir.* The 

 structure and manner of fertilisation is in many re- 

 spects like that of Epipactis, to which genus the author 

 believes the present one to be allied, though placed by 

 Lindley amongst the Arethuseae. Eohrbach saw the 

 flowers visited by Bomhus lucorum, but it appears that 

 only a few produce capsules. 



Goodyera repens.'\ — This genus is rather closely re- 

 lated to Epipactis, in most of the characters with 

 which we are concerned. The shield-like rostellum is 

 almost square, and projects beyond the stigma ; it is 

 supported on each side by sloping sides rising from 

 the upper edge of the stigma, in nearly the same 

 manner as we shall presently see in Spiranthes. The 

 surface of the protuberant part of the rostellum is rough, 

 and when dry can be seen to be formed of cells ; it is 

 delicate, and, when slightly pricked, a little milky 

 viscid fluid exudes; it is lined by a layer of ver} 

 adhesive matter, which quickly sets hard when exposed 



" 'tJeber den Bl iitlienbau von f Specimens of this rare High- 



Epipogium,' &o. 1866; Bee also land Orel lid were kindly sent me 



Irmisch, 'Beitrage zur Biologie by the Eev. G. Gordon of Elf<in. 

 der Orchidcen,' 1853, p. 5.5. 



