218 COMMON CANADIAN WILD PLANTS. 



* * * Leaves linear, sword-shaped. Spadix on the side of the scape. 



Flowers with a perianth of 6 sepals. No upathe. 



5. Ac'oruft. Scape 2-edged, resembling the leaves, the cylindrical spa- 

 dix borne on one edge. Sepals hollowed. Stamens 6. 



1. AKISvE'MA, Martins. INDIAN TUBNIP. 



1. A. triphyl'lum, Torr. (INDIAN TURNIP.) For full 

 description and engraving of this plant see Part I. , sections 

 94-97. 



2. A. Draeon'tium, Schott. , (GREEN DRAGON) is reported 

 from low grounds near London, Ont. Leaf usually solitary, 

 pedately divided into 7-11 oblong-lanceolate pointed leaflets. 

 Spathe convolute, pointed ; the slender point of the spadix 

 extending beyond it. 



2. PKLTAYOKA, Raf. ARROW ARUM. 



P. undula'ta, Raf. (P. Virginica of most authors.) Root 

 of thick tufted fibres. Scape 12-18 inches high. Staminate 

 part of the spadix much longer than the pistillate. Shallow 

 water ; apparently rare. 



3. CALLA, L. WATER ARUM. 



C. palUStriS, L. (MARSH CALLA.) This plant is fully 

 described and illustrated in Part I., section 98. 



4. SYMPLOCAR'PUS, Salisb. SKUNK CABBAGE. 

 S. fOB'tidllS, Salisb. Leaves 1-2 feet long, ovate or heart- 

 shaped, short-petioled. Spathe purplish and yellowish, 

 incurved. Plant with skunk-like odour. Bogs and wet 

 places ; not common northward. 



6. At" OKI'S, L. SWEET FLAG. CALAMUS. 



A. Cal'amus, L. Scape much prolonged beyond the spa- 

 dix. Swamps and wet places. 



ORDER XCV. LEMNA'CE^E. (DUCKWEED FAMILY.) 



Very small plants floating about freely on the surface of 

 ponds and ditches, consisting merely of a little frond, com- 

 monly with a single root or a tuft of roots from the lower 

 surface, and producing minute monoecious flowers from a 



