AROIDE^E. 381 



1. ACORUS. Linn. 



Spadix cylindric, covered with flowers. Perianth gluma- 

 ceous, 6-petalled, naked. Stamens 6. Ovary 1. Style 

 none. Capsule 3-angled, 3-celled. 



Hexandria. Monogynia. 



A. calamus Linn. : spadix protruding from the side of an ensiform 

 leaf. 



HAB. Swamps. Can. to Car. June. 21. Leaves 2 3 feet long. 

 Scape leafy above. the spadix. Spadix cylindrical, thick, cover- 

 ed with minute greenish-flowers. The root is aromatic. 



Siceet Flag. 



2. ORONTIUM. Linn. 



Spadix cylindric, crowded with flowers. Perianth 6-petal- 

 led, naked. Style and stigma scarcely any. Utricle 1-seeded. 



Hexaftdria. Monogynia. 



0. aquaticum Linn. : leaves all radical, lanceolate-ovate ; scape cy- 

 lindrical, spiked. Pothos ovata Walt. 



HAB. In water. Can. to Flor. May. 2f . Leaves radical, be- 

 coming large, varying in breadth. Flowers yellow, in a close 

 cylindrical spike, with 3, peculiar smelL Golden Club. 



3. ARUM. Linn. 



Spathe 1-leaved, cucullate, convolute at base. Spadix 

 naked at the extremity, with sessile anthers in the middle and 

 ovaries at the base. Berry 1 -celled, many-seeded. 



Monoecia. Polyandria. 



1. A. dracontium Linn. : stemless ; leaves pedate ; leafets lanceolate- 

 oblong, entire ; spadix subulate, longer than the oblong convolute 

 spathe. .> 



.HAB. Banks of streams. N. Y. to Flor. Juiie, July. U . 

 Scape about a foot long. Leaf 1, on a petiole as long as or long- 

 er than the scape. Spathe short, convolute. Found on the 

 banks of the Hudson, near Albany. Green Dragon. 



2. A. triphyllum Linn. : stemless ; leaves ternate ; leafets oval, acu- 

 minate, very entire ; spadix clavate ; spathe peduncled, ovate, acumi- 

 nate, convolute below, flat ad bent over above. 



HAB. Wet woods. Can. to Car. May, June. l^.Root tube- 

 rous. Leaves 1 2, on long petioles. Spathe green or purple. 

 Whole plant acrid and almost caustic. Big. Med. Bot. i. 52. 



Indian Turnip. 



3. A. atrorubens Linn.: stemless; leaves ternate; leafets ovate, 

 acuminate; spadix cylindrical; spathe sessile ovate, acuminate, spread- 

 ing horizontally above. 



