Corylus. HazeELNuT 
Corylus ameri . AMERICAN HAZELNUT. 
Location: Fruticetum. Economic Garden. Wild: scarce. 
merica 
Corylus Avellana. EuRoPEAN HazELNUT 
Location: Frutic 
Natural peat eee Old World. 
Corylus Avellana var. atropurpurea. PuRPLE EUROPEAN HAZEL- 
NUT. 
ion: Fruticetum. 
ene Avellana var. urticifolia. CuT-LEAVED EUROPEAN 
AZELNUT. 
Location: Fruticetun m. Economic Garden. 
orylus maxima var. en PURPLE-LEAVED HAZELNUT. 
Location 
Natural ane Sour Europe. 
Corylus pontica. SIATIC HAZELNUT. 
Location: ae 
Natural distribution: Western Asia. 
Corylus rostrata. BEAKED HaZzELNuT. 
Location: Fruticetum. 
ae ceeibaton: Northern North America. 
Betul BIRCH 
Betula alba var. ovalis. Oval Harry WHITE BIRCH. 
Location: retum. 
age eee Europe and Asia 
Betula rhombifolia. Raounee LEAVED Hairy WHITE 
Location: Arboretum. 
Betula degen SOUTHERN YELLow BIRCH. 
ocation: Arboretum. 
Natural distribution: Eastern United ‘States. 
Betula Andrewsii. ANDREWS’ Bir 
cation: Arboretum. 
oi eastan: Colorado. 
Betula coerulea. Biurz Bircu. 
