158 OLEACEAE. 



STYRAX. 



Shrubs or small trees with pale wood with small crowded 

 vernal ducts, minute summer ducts, and very fine medullary 

 rays ; rather slender terete twigs ; small rounded continuous 

 pith ; alternate small somewhat raised half-round leaf-scars with 

 a single curved bundle-trace ; no stipule-scars ; ovoid appressed 

 superposed buds with a single exposed scale; moderate short- 

 petioled nearly entire leaves ; rather small perfect bell-shaped 

 gamopetalous flowers in leafy racemes; and dry few-seeded 

 small fruit. 



1. Leaves tomentose beneath. S. grandifolia. 

 Leaves glabrate beneath. 2. 



2. Pedicels for a time somewhat scurfy. S. americana. 

 Pedicels glabrous. S. japonica. 



Family OLEACEAE. Olive Family. 



A moderate-sized family yielding the pickled olives and 

 olive-oil of commerce, ash lumber, etc., and including a number 

 of the most prized decorative shrubs. 



FRAXINUS. Ash. 



Deciduous rather large trees with hard white or brownish 

 wood with a crowded vernal zone of moderately large ducts, 

 fewer and smaller ducts in a more or less marked transverse 

 wavy pattern in the summer wood, and numerous fine medullary 

 rays ; rather stout more or less compressed twigs ; elliptical or 

 6-sided rather large pale homogeneous pith ; opposite large low 

 shield-shaped or half-round leaf-scars with many bundle-traces in 

 a single aggregate series ; no stipule-scars ; sessile often super- 

 posed rounded buds with i or 2 exposed pairs of scales ; nor- 

 mally odd-pinnate large stalked leaves ; small mostly imperfect 

 and apetalous flowers in lateral clusters ; and winged fruits, 

 i. Twigs acutely 4-angled, or 4-winged : buds gray: 



fruit broad, winged all around. F. quadrangulata. 



Twigs not acutely angled. 2. 



