IV 



Key to the Cultivated Herbs and 

 Potted Shrubs 



1 a Plants not cultivated for ornament or shade, but for 



their economic use, such as food, forage, etc 2 



b Plants cultivated for ornament or shade 77 



2 a Leaves compound or deeply lobed 3 



b Leaves simple with entire or toothed margins, the 



teeth % in. or less long 33 



3 a Prostrate or climbing plants with tendrils 4 



b Plants not with tendrils 9 



4 a Leaves compound ; flowers irregular 5 



b Leaves lobed or cleft, not compound; flowers regular.. 6 



5 a Leaflets 4-6; flowers usually white Pisum. p 174. 



b Leaflets 8-14; flowers bluish-purple Vicia saliva, p 174. 



6 a Climbing vine Lageneria. p 216 



b Prostrate vines 7 



7 a Tendrils not branched Cucumis. p 217 



b Tendrils branched 8 



8 a Leaves with the lobes cleft or pinnatifid. .Citrullus. p 217 

 b Leaves with the lobes not cleft or pinnatifid 



Cucurbita. p 217 



9 a Prostrate or climbing vine with rough, prickly stem; 



flowers greenish; fruit papery. .Humulus lupulus. p 145 

 b Plants not completely as in a 10 



10 a Leaves palmately compound ; leaflets 5-7, 3-6 in. long, 



rough Cannabis. p 14.5 



b Plants not completely as in a n 



11 a Leaves with base of petiole spreading and more or less 



sheathing the stem ; leaves pinnately compound, the 



leaflets irregularly toothed or lobed 12 



b Leaves not completely as in a 18 



12 a Leaves finely dissected into linear segments 13 



b Leaves not finely dissected into linear segments 15 



13 a Flowers yellow; leaves sweet and aromatic 



Foeniculum. p 193 

 b Flowers white 14 



14 a Fruit globose, indistinctly ribbed Coriandrum. p 193 



b Fruit oblong, distinctly ribbed Carum. 



6 81 



