KEY TO CULTIVATED HERBS AND POTTED SHRUBS 



421 a Plants exuding a milky sap when broken. .Euphorbia, p 180 

 b Plants not exuding a milky sap when broken 



Polygonum. p 14.6 



422 a Average leaf i ft. or more long 423 



b Average leaf less than i ft. long 427 



423 a Flowers in umbels; plant cultivated in pots 



Agapanthus. p 133 

 b Flowers not in umbels; plants cultivated in gardens. . . . 424 



424 a Flowers 3-4 in. broad, borne singly on the flowering stalk 



Colchicum. p 133 

 b Flowers in spikes or clusters 425 



425 a Flowers 3-5 in. long, 6-15 in a terminal cluster 



Hemerocallis. p 133 

 b Flowers 2 in. or less long, numerous in a spike 426 



426 a Leaves 1-2 ft. long; spike 1-4 ft. long. . . .Eremurus. P 133 

 b Leaves 2-3 ft. long; spike 3-10 in. long. . . .Kniphofia. p 133 



427 a Leaves broadly ovate, or lanceolate and variegated 



Funkia. p 135 

 b Leaves linear to lanceolate 428 



428 a Flowers solitary on the flowering stalk 429 



b Flowers not solitary on the flowering stalk 431 



429 a Leaves linear Triteleia. p 135 



b Leaves lanceolate 430 



430 a Perianth tubular at the base Colchicum. p 133 



b Perianth of 6 distinct parts Tulipa. p 135 



431 a Perianth tubular, with 6 lobes 432 



b Perianth of 6 distinct parts 435 



432 a Leaves lanceolate to oblong-ovate; flowers white 



Convallaria. p 136 

 b Leaves linear 433 



433 a Flowers somewhat globose, usually blue; leaves thick 



M us cari. p 135 

 b Flowers not globose 434 



434 a Flowering stalk 6-18 in. high, with 15 or more flowers 



Hyacinthus. p 135 

 b Flowering stalk 3-6 in. high with 3-12 flowers 



Chionodoxa. p 135 



435 a Flowers solitary or in racemes, rarely white. .S cilia. P 135 

 b Flowers in corymbs or umbels 436 



436 a Flowers white with green stripes on the outside, ar- 



ranged in corymbs Ornithogalum. p 135 



b Flowers white, stamens often colored, arranged in 



umbels A Ilium neapolilanum. p 134 



106 



