SCHWEINITZIA ODORATA. jg 



improved, the character of the genus. The anthers, according to 

 Nuttall, are " adnate to the filaments, one-celled, opening from the 

 inverted base by two naked pores." The anthers are, however, 

 pla.nlj two-celled at every stage, and their orifices were probably 

 assumed to be basal on account of their obvious resemblance to 

 those of Pyrola, which are (wrongly) so described by Nuttall and 

 most other authors. These characters were copied by Don,* and 

 the latter has been adopted by Endlicher,t and, on Nuttall's author- 

 ity, by De Candolle, who, although he possessed a specimen of the 

 plant, appears not to have investigated the structure of the flower. 

 Sprengel cites Monotropsis as a synonym under Monotropa.f 



The small group of Monotropeae may be said to consist of Eri- 

 cme^ or Pyroleae without green foliage, and with the mode of life 

 and the aspect of Orobanchacea.. They have apparently no other 

 combmmg character. The anthers of Schweinitzia open by pores • 

 those of Pterospora open longitudinally, though they are otherwise,' 

 as well as the corolla, much the same as in Andromeda. The an- 

 thers of Hypopitys open by a continuous transverse line into two very 

 unequal valves; those of Monotropa, which stand transversely on 

 the apex of the filament, open by two terminal transverse chinks 

 Lmdley gives indeed another character, namely, that " there is a 

 difference in the position of the embryo, that organ being at the 

 apex of the albumen in Monotrope^," but at the base in other 

 Encace^. § But the embryo of Monotrope^e is entirely unknown, 



*Gen S,s, Gar,. ^ Bo., Vol. III., p. 867. The na.e is here inadvertent- 

 ly changed to « S. Caroliniana, £«." 

 t Genera Planiarum, p. 761. 

 t Genera Plantarum, Vol. I., p. 347. 

 § Lindley, Introd. Nat. Syst., ed. 2, p. 219, and Yeg. Kingdom, p. 452. 



