KEY FOR MARCH, APRIL AND MAY 



Trees, Shrubs, or Woody Vines With Simple, Opposite 

 Leaves or Leaves Wanting at Flowering Time 



28 a Tree with violet, tubular flowers 2 in. or more long 



Paulownia. p 210 

 b Trees or shrubs not completely as in a 29 



29 a Shrubs with showy yellow flowers about i in. long, usu- 



ally appearing before the leaves Forsythia. p 198 



b Shrubs or trees not completely as in a 30 



30 a Shrub or small tree with entire, evergreen leaves Vz-i 



in. long; flowers small, greenish Buxus. p 181 



b Trees or shrubs not completely as in a 31 



31 a Flowers without a perianth 32 



b Flowers with a perianth 33 



32 a Stamens numerous; leaves round-heart-shaped 



Cercidiphyllum. p 152 

 b Stamens 2; leaves often wanting at flowering time 



Fraxinus. p 198 



33 a Stamens 20-40; flowers white, i in. or more broad.... 34 

 b Stamens 10 or less; flowers not completely as in a 35 



34 a Calyx-lobes toothed, nearly as long as the petals 



Rhodotypos. p 164. 

 b Calyx-lobes much smaller than the petals.Philadelphus. p 162 



35 a Flowers dark purple, 1-2 in. broad Eutneria. p 154. 



b Flowers not completely as in a 36 



36 a Corolla deeply saucer-shaped, 5-lobed, with 10 pouches 



on the tube Kalmia. p 195 



b Flowers not completely as in a 37 



37 a Flowers greenish or reddish, about }4 in. broad 38 



b Flowers not completely as in a 40 



38 a Leaves evergreen, thick, usually variegated. .Aucuba. p 194 

 b Leaves not evergreen 39 



39 a Decumbent shrub about i ft. high. Euonymus obovatus. p 182 

 b Erect shrubs or trees Acer, p 182 



40 a Leaves with silvery scales at least on the under surface 



Lepargyraea. p 189 

 b Leaves wanting or not as in a 41 



41 a Flowers in heads subtended by 4 large, white or red- 



dish bracts usually % in. or more long. . . .Cornus. p 193 

 b Flowers not completely as in a 42 



42 a Stamens 10, or flowers double Deutzia. p 162 



b Stamens 5 or less 43 



43 a Stamens 2 44 



b Stamens 4 or 5 or wanting . . . ,. 46 



44 a Petals 4, nearly distinct Fontanesia. p 199 



b Petals joined into a tube 45 



