446 GENLISEA OENATA. Chap. XVIIL 



Genlisea. 



This remarkable genus is teclinically clistingiiislied 

 from Utricularia, as I hear from Prof. Oliver, Ly 

 having a five-partite calyx. Species are found in 

 several parts of the world, and are said to be " herbse 

 annuae paludos?e." 



Genlisea ornata (Brazil). — This species has been 

 described and figured by Dr. Warming,* who states 

 that it bears two kinds of leaves, called by him 

 spathulate and utriculiferous. The latter include 

 cavities ; and as these differ much from the bladders of 

 the foregoing species, it will be convenient to speak, of 

 them as utricles. The accompanying figure (fig. 29) 

 of one of the utriculiferous leaves, about thrice en- 

 larged, will illustrate the following description by my 

 son, which agrees in all essential points with that 

 given by Dr. Warming. The utricle (h) is formed 

 by a slight enlargement of the narrow blade of the 

 leaf. A hollow neck {n), no less than fifteen times 

 as long as the utricle itself, forms a passage from the 

 transverse slit-like orifice (o) into the cavity of the 

 utricle. A utricle which measured -^V of an inch 

 (•705 mm.) in its longer diameter had a neck 44 

 (10'583 mm.) in length, and -^ of an inch (-254 mm.) 

 in breadth. On each side of the orifice there is a long 

 spiral arm or tube (a) ; the structure of which will be 

 best understood by the following illustration. Take a 

 narrow ribbon and wind it spirally round a thin 

 cylinder, so that the edges come into contact along its 

 whole length ; then pinch up the two edges so as to 

 form a little crest, which will of course wind spirally 



* " Bidrag til Kundskaben om Lentibulariaceoe," Copenhagen, 1874. 



