VEGETATIVE STRUCTURE. 



51 



Phalaenopsis and allied genera. In all these genera the leaves are 

 distichously arranged, that is to say, they are in two rows one opposite 

 the other, the leaves of one row alternating with those of the other. 



Rhynchostylis retusa. 

 A iiiouoiKKlial orchid with lateral racemose iullorescencc. 



In^some species the iuternodes are very short and the leaves much 

 crowded; they are nearly always much longer than broad, embracing 

 the stem at their base, notched or unequally lobed at their apex ; 

 usually flat (dorsiventral or bi-facial) with a sunk median line on 



U. OF ILL. LIB. 



