566 Britton : Studies of West Indian plants 



Illustration : Plumier, PI. Amer. ed. Burmann, pi. 193- 

 Known only from Plumier' s description and illustration; it 



may belong to the genus Harrisia, — although the long-exserted 



style seems to preclude it. 



10? Cereus erectus Karw.; Pfeiff. Enum. 95. l8 37- 



Type locality: Mexico. 



Referred in synonymy by Schumann to Cereus repandus, that is 



to say, presumably a Harrisia. Known only from the description. 



Cereus repandus L., originally from Curacao, is, from the 



description, presumably a Cephalocereus. 



8. POTOMORPHE PELTATA (L.) MIQ. 



Potomorphe peltata (L.) Miq. Comm. Phyt. 2)7- 

 Piper peltatum L. Sp. PI. 30. 1 753- 



1838. 



Pip 



75 



Potomorphe umbellata Miq. Comm. Phyt. 31. 1838.^ 



J 



'ph 



The difference of peltate 



Up^W\.^ v^x -x *^*c m \s * is r w v%* x^ **w»- -www 



and non-peltate leaves depended upon by Linnaeus and most su - 

 sequent authors who have had occasion to describe these plants 



including- M 



iliuuiii^ x*x. vitamin vj^ \^a,ii\jk\ji.i\* ^*»» w *-— --7 — j ^ - 



211), is worthless, because individual plants bear both kinds 

 leaves. I had long suspected this to be the case, and while discussing 



Cuna Gap last September, where specimens of both supposed species 

 were abundant, he almost immediately detected a plant which or^ 

 peltate leaves at its upper nodes and non-peltate leaves at the ° 

 ones, and we found a plenty of such specimens afterwards ( ft 

 3513). The relative number of spikes, which also has been su P p °* n _ 

 to differentiate the species, I had previously found to be quite inco 

 stant, and the character of pubescence used in the descrip l 

 M. de Candolle is also inconstant, as evidenced by his proposing 



lum C. DC). 

 M. de Cs 



peltata (loc. cit. 210, as Piper p 



Pip 



describes them as shrubs up to 4 meters high. As a ^ 



fact, the plant is not properly a shrub, its stems being so , 



