188 



POPULAR FLOKA. 



the other out) ; the 5 stamens on the corolla alternate with its lobes; the anthers generally 

 more or less adherent to the stigma. Ovaries 2 ; but the stigmas, and often the styles also, 

 united into one ; the fruit two separate pods. Seeds generally many, and with a tuft of 

 down at one end. 



Corolla -with a funnel-shaped tube and a wheel-shaped 5-parted border: style one. 



Leaves generally in whorls. Shrub, with large rose-colored flowers, {Nerium) ^Oleander. 



Leaves opposite, evergreen in the common creeping species. Fl. blue, ( Vlnca) *Periwinkle. 



Leaves alternate, very many, narrow. Erect herbs with pale-blue salver-shaped flow- 

 ers: seeds not tufted, {Amsbnia) Amsonia. 

 Corolla bell-shaped, white or pinkish: style none. Herbs, with opposite leaves. {Apocynum) Dogbane. 



Dogbane. Apdcynum. 



1. Spreading D. Branches of the low erect stem widely diverging; leaves ovate or oval ; cymes few- 



flowered ; lobes of corol- 

 la recurved ; tube shorter 

 than the calyx. Thickets, 

 &c. A. androscemifoUum. 



2. Hemp D. or Indian Hemp. 



Stem and branches erect 

 or ascending; cymes few- 

 flowered ; lobes of the co- 

 rolla not recurved, the 

 tube not longer than the 

 calyx. A. canndbinuvi. 



46S. Summit of a plant of Dogbane, 

 No. 1, with fluwtirs and pods 



467. Flowers, enliirged. 



46tJ. Flower wiili the corolla cut 

 away, in show tlie Eiamens. 



469. The siamens taken nwny, tOEhow 

 the pisiils i IwD ovaiies, vvilli iheir two 

 large 6(]gm.is> united into one mass. 



470. A seed, with iisiufLof long haira 

 or down at one end. 



71. MILKWEED FAMILY. Order ASCLEPIADACE^. 

 Plants with milky juice, tough bark, and in other respects like* the Dogbane family, but 

 with the 5 short stamens all united by their filaments into a ring or tube, the anthers grown 

 fast to the large stigma, aud the grains of pollen in each cell cohering into a waxy or tough 

 mass. Flowers in simple umbels. Pods a pair of many-seeded follicles : seeds furnished 

 with a long tuft of silky down at one end (Fig. 229). The flowers in this family are 

 curious, but are too difficult for the beginner. The two common genera may be distin- 

 guished as follows : — 



Corolla 6-parted, reflexedi five hoods to the stamens, with a horn in each, (Asclipias) Milkweed. 

 Corolla, &c. as in Milkweed, but the hoods without any horn, (Acerdtes) Gkeen-Milkweed. 



