114 COMMON CANADIAN WILD PLANTS. 



part of the scape, or thick rootstock, from which they spring. 

 Plant about a foot high. 



ft. LIMXAN'THEMUM, Gmeliri. FLOATING HEART. 

 L. lacuno'siim, Griseb. In shallow waters, northern Ontario. 



ORDER LXVII. APOCYNA'CEJE. (DOGBANE FAMILY.) 



Herbs or slightly shrubby plants, with milky juice, opposite 

 simple entire leaves, and regular pentarnerous and pentandrous 

 flowers with the lobes of the corolla convolute in the bud. 

 Distinguished by having 2 separate ovaries, but the 2 stigmas 

 united. Calyx free from the ovaries. Anthers converging round 

 the stigmas. Seeds with a tuft of down on the apex. Repre- 

 sented with us only by the Genus 



APO'CYNUM, Tourn. DOGBANE. 



1. A. androsaemifo'lium, L. (SPREADING DOGBANE.) The 

 corolla bell-shaped, 5-cleft, pale rose-coloured, the lobe* lunml 

 back. Branches of the stem widely forking. Flowers in loose 

 rather spreading cymes. Leaves ovate, petioled. Fruit 2 long 

 and slender diverging pods. Banks and thickets. 



2. A. cannab'inum, L. (INDIAN HEMP.) Lobes of the 

 greenish-white corolla not turned back. Branches erect. Cymes 

 closer than in No. 1, and the flowers much smaller. Along 

 streams. 



ORDER LXVIII. ASCLEPIADA'CE^E. (MILKWEED F.) 



Herbs with milky juice and opposite or whorled simple entire 

 leaves. Pods, seeds, and anthers as in the last Order, but the 

 anthers are more closely connected with the stir/ma, the (reflexcd) 

 lobes of the corolla are valvate in. the bud, the pollen is in ?mr// 

 masses, and the ( monadelphous ) short filaments bear 5 curious 

 hooded bodies behind the anthers. Flowers in umbels. Commonly 

 represented by only one Genus, which is typical of the whole 



Order. 



ASCI/E'PIAS, L. MILKWEED. 



1. A. Cornu'ti, Decaisne. (CoMMox MILK WEED. ) Stem tall and 



stout. Leaves oval or oblong, short-petioled, pale green, 4-8 



