UNDERSHRUBS. 



537 



Vaccinium. 



47. Leaves white beneath. 

 Leaves green beneath. 48. 



48. Leaves numerous, small. Cotoneaster. 

 Leaves larger, cordate. Epigaea. 



49. Leaves entire. 50. 

 Leaves crenate. 52. 



50. Leaves small (scarcely 20 mm. long). 



Round-ovate. Mitchella. 



Oblanceolate. Pyxidanthera. 



Leaves larger, lanceolate or elongated-ovate. 51. 



51. Glabrous: leaves dark green. Vinca. 

 Pubescent: leaves often pale-veiny. Loriicera. 



52. Leaves round-oval, small. Linnaea. 

 Leaves elliptical to obovate. Evonymus. 



53. Very slender and delicate. Selaginella. 

 Stouter : leaves relatively narrow. Lycopodium. 



Deciduous Trailers. 



54. Armed : leaves compound. Rubus. 

 CAUTION. Unarmed. 55. 



55. Leaves opposite. 56. 



POISONOUS. Leaves compound. Rhus (Toxicodendron). 



56. Leaves entire. : Lonicera. 

 Leaves toothed. Evonymus. 



Simple Shoots or Leafy Tufts. 



57. Aromatic. 58. 

 Not aromatic. 59. 



58. Leaves lanceolate, bitter. Chimaphila. 

 Leaves elliptical, wintergreen-flavored. Gaultheria. 



59. Leaves veinless, very narrow. Lycopodium. 

 Leaves veiny, broader. 60. 



60. Leaves cordate, bronzing in winter. Galax. 

 Leaves not heart-shaped, or if so, not bronzing. 61. 



61. Leaves serrate. Moneses. 

 Leaves often coarsely dentate, large. Pachysandra. 

 Leaves crenate or entire. 62. 



62. Leaves partly or wholly from the ground. Pyrola. 

 Leaves at end of a short stem. Cornus, 



