MONOCOTYLEDONOUS PLANTS. 



HAB. Swamps. Penn. to Vir. May, June. It. Spathe dark 

 brown ; smell disagreeable. Mr. Schweinitz informs me that 

 this plant is found at Easton, Perm., and he thinks it distinct 



from. the preceding. 



4. RENSSELAERIA. Beck. 



Spathe convolute. Spadix covered with flowers, fertile at 

 the base, sterile above. Perianth none. Berry 1-seeded. 



Monoecia. Polyandria. 



OBS. This genus, proposed by Mr. William Cooper of New- York, 

 was named by him Lecontia, in honor of the distinguished naturalist, 

 Capt. John Le Conte, of the U. S. army. . But this name, which was 

 adopted by Dr. Torrey in his Compendium, is applied by A. Richard 

 to a genus of the order RUBIACE*:, and confirmed by De Candolle in 

 liis Prodromus. I have therefore changed that of Mr. Cooper's genus, 

 by calling it after the Hon. Stephen Van Rensselaer ; who, for his 

 efficient patronage of the Natural Sciences, is entitled to the respect 

 and gratitude of all their cultivators. 



R. virginica Deck. Arum tirginicum Linn. Calla virginica Mich. 

 Big. Lecontia virginica Coop. Torr. Eat. 



HAB. Swamps. N. Y. to Car. July. 1. Scapes several from 

 one root, 12 18 inches long. Leaves on long petioles, oblong, 

 hastate-cordate, with the lobes obtuse, a foot or more long. 

 Spathe lanceolate, involute, border undulaie, closely embracing 

 the spadix, which is long and slender. Berries 1-seeded. 



5. CALLA. Linn. 



Sjtathe ovate, somewhat flattened. Spadix covered with 

 flowers. Perianth none. Berry many-celled, many-seeded. 



Monoecia. Polyandria. 



. d palustris Linn. : leaves cordate ; spathe flat j spadix covered with 

 perfect flowers. 



HAB. Sphagnous swamps. Can. and-N. S. July, Aug. 1. 



Root thick and creeping. Scape 6 8 inches high. Leaves on 



long petioles, cordate, acuminate, with an involute point. 



Spathe oval, green on the outside, white within". Water Arum. 



6. SYMPLOCARPUS. Salisb. 



Spathe ventricose-ovate, acuminate. Spadix roundish, 

 covered with perfect flowers. . Perianth deeply 4-parted, per- 

 sistent ; segments cucullate, truncate, becoming thick and 

 spongy. Style pyramidal, 4-sided. Stigma simple, minute. 

 Seeds numerous, globular, imbedded in the spadix. 



Tetrandria. Monogynia. 



S.fatidus Nutt. Ictodes fcttidus Big. Pothosfntida Mich. 

 HAB. Wet meadows. Can. to Vir. Feb. April. U.Raot 



