PELTANDUA. 87 



1. Pelt^andra undulata Raf. 1819. Petiols 

 equal to leaves striate dimidiate, leaves sa- 

 gittate nndulate oblong cuspidate lobes oblong 

 obtuse, scape striate terete punctate of black, 

 spatha subequal, base inflate, split in the mid- 

 dle, margin undulate, end narrow involute. In 

 the Alleghany and Mattawan mts, also in New 

 Jersey &.c, it flowers in June, spathe lucid 

 blackish green, margin yellow, spadix white, 

 young petiols glandular, leaves 5 to 10 inches 

 long. This was the type of my Peltandra 

 having 3 to 5 seeds. It is hard to say which 

 Authors have seen that species but blended it 

 with the next. It was probably the real Arum 

 Virginicurn of Clayton and Linneus. 



2. Peltandra canadensis Raf. Arum sa- 

 gittatum foliiselongatis, Charlevoix pi. canad. 

 fig. 81. Arum Virginicum of many botanists, 

 Lecontea virg. Torrey. Renselaria virg. Beck. 



Petiols elongate terete not punctate, leaves 

 oblong flat hastate cordate, cuspidate, lobes ob- 

 tuse: scapes several subcarinate, spatha lan- 

 ceolate involute, margin undulate — In Canada, 

 New York, New England and Pennsylvania. 

 This is the type of Renselaria having only 1 

 or 2 ripe seeds, easily known by flat leaves se- 

 mipedal, long petiols not dimidiate &lc. 



3. Peltandra latifolia Raf. Petiols short 

 dimidiate flat above, leaves broad triangular 

 sagittate, undulate cuspidate, lobes divaricate 

 obtuse ; scapes several terete incurved, berries 

 often one seeded — In the waters of marshes, 

 ponds, creeks, in south New Jersey and Dela- 

 ware, leaves often one foot long and broad : not 

 rare there, but seldom found in flowers. It be- 

 long to subgenus Renselaria, but is quite dis- 



