Order 131.— AKOIDS. 303 



Spatlie rolled in at base. Top of spadix club-shaped. Dragon-root. Aris^'ma. 1 

 b Spathe rolled inwards the whole lenf^th. Anoiv-lvd. Dragon. Peltan'dra. 2 

 b Spathe rolled backwards above, white. Egyptian- Calla. Kighak'dia. 



c Perianth 0. Spathe open, flattish, white. Lvs. cordate. Wild Calla. Calla. 



c Perianth regular. Spa. shell-form. Lvs, large. Shunk-cabbage. SYMPLOCAii'pns. 

 d Flowers terminal, yellow. Scape terete. Golden Club. Okontium. 



d Ficwers lateral, green. Scape leaf-like. Sweet Flag. A'corus. 3 



1. ARIS^'MA, Arum. Indian Turnip. 



Spathe rolled, inward at base. Spadix covered with flowers below, 

 naked and club-shaped above. Sterile flowers above the fertile, each a 

 clump of 4 stamens. Fertile flowers each a 1-celled ovarj, with a flat 

 stigma. Berrj red, with 1 or several seeds. — Odd-looking plants, with 

 scape arising from a corm or rootstock, and sheathed with the radical 

 leaves. Taste very acrid. 



1 A. triphyPlum. Jach-in-the- Pulpit. Leaves usually 2, trifoliate. Spathe bent and 



inflected above, covering the obtuse spadix, striped. 



2 A. quina'tum. Five-leaved Jack. Leaves in pairs, one or both quinate. S. 



3 A. Dracon'tium. Green Dragon. Leaf mostly solitary, pedate, 7-11-foliate. 



2. PELTAN'DRA. Arrow Dragon. 



The sterile flowers consist of 8-12 anthers attached to the border of a 

 shield-shaped (peltate) connectile. — Eoot fibrous. Leaves sagittate. 



1 P. Virgin'ica. Virginia A. Spathe green, incurved, long, wavy on the margin. 



Leaves many, large, hastate-sagittate, very smooth, dark. 



2 P. glau'ca. Glaucous A. Spathe white, entire, gradually unrolled and widene<f 



above. Leaves ovate-sagittate, the base lobes large. S. 



3. AC'ORUS. Sweet Flag. 



Spadix cyliudric, sessile, issuing from the side of a leaf-like scape with- 

 out a spathe. Perianth of 6 sepals. Stamens 6. Fruit capsular, 3-celled, 

 CO -seeded, n lilnzome thick, aromatic. Leaves all radical, linear-svvord- 

 shapcd like tlie scape. 

 A. calamus. Tha Sweet Flag grows in swampy places throughout the country. Tlie 



lori<j sword-shaped leaves are marked by a rid:je ruuning their whole length ('.J-Sf.). 



Spadix about 3' long, yellowish-green, home inidway of the length of the leaf-like 



scape. Koot a thick, creeping rhizome, much valued for its warmly pungoiil 



qualities. 



