44 THE TRANSVERSE SECTIONS OF PETIOLES OF EUCALYPTS 



Characteristic features : 



Section. — Large, twice as broad as thick. 



Cortical Cavities. — Large. 



Hard Bast. — Scantily developed. 



Vessels. — Medium-sized, numerous, and regularly distributed. 



XIII. — Form Belonging to Western Australia, South Australia, Victoria, 

 New South Wales, Queensland, and North Australia. 



30. E. rostrata, Schlechtendal ; red gum. 



Tree. — Of moderate size, often attaining a height of over 100ft. 



Leaves. — Equally green on both sides. 



Size of Section. — About \ line broad and thick, or equally broad as thick. 



Outline of Section. — From round to irregular oval, generally with somewhat 



flattened upper surface. 

 Epidermis. — Thickness, ^^n-i. 



Breadth, about ^ in. 

 Cortical Cavities.— 5^ in., roundish, numbering from 8 to none. 

 Crystals. — Moderately numerous. 



Hard Bast. — Sparingly developed, discontinuous; one or a few cells thick. 

 Wood-curve (see Fig. 40). — Thickened body, and stout short horns, usually 



gently incurved. 

 Vessels. — Largest, ^^in. 

 Average, ji-„ in. 



Moderately large and numerous, mainly distributed in upper portion. 

 Characteristic features : 



Section.— Small, equally broad and thick. 

 Cortical Cavities. — SmaU and variable in number. 

 Hard Bast. — Scanty. 



Wood-curve. — Moderately thickened, and short, stout horns. 

 Vessels. — Medium-sized, numerous, and mainly distributed in upper 

 portion of wood. 



XIV. — Forms Belonging to West Australia, South Australia, Victoria, and 



New South Wales. 



We are indebted to Mr. Bosisto for specimens of the leaves of E. uncinaia 

 (Turczaninow) and E. oleosa (F. v. M.), from the district between Dimboola and Lake 



