23 



Schomburgk's .i^nterolobimii 



BnterolQ-olum oGhomburgki i Senth. in Hcok. Lend. Journ. 

 30t. 3: 219- 1844. 



Descrij^'tlon o f the tree 



A tree about 30 m. high, and often 1.5 m. in dianeter, 

 the trunk ereat, covered with a rugose bark, the crov/n flat 

 and s^jreading, the young growtii ferruginous pubescent. 

 Leaves bi^innate, the rachis ferruginous-i^ubescent , '.vith a 

 large gland near the base of the main i^etiole, and other 

 smaller ones between the pinnae and betv/een the leaflets; 

 pinnae 10 to EO- jugate; leaflets 50 to 60- jugate, narrow, 

 falcate, 4 to 5 mm. long. Inflorescences axillary, mostly 

 geminate or ternate, the peduncles about 2 cm. long, ferru- 

 ginous pubescent. Calyx tubular turbinate, about 2 mm. 

 long; corolla infundibuliform, 4 mm, long; stamens 20, white 

 1.5 cm. long. Legume broad, cochleate, 5 to 6 cm. in dia- 

 meter, glabrous, sublignose, indehiscent. 



Description of the V/ood 



Sapwood thick, very light brown; heartwood much darker. 

 7/ood very hard, heavy, strong, durable, moderately fine-- 

 grained, taking a good polish. Annual rings of growth not 

 visible under high power microscope. 



Pores (transverse section) moderately numerous, large 

 (•25 mm. in diameter), round, open or more of ted closed, with 

 dark brown tyloses in the heartwood, and arranged singly or 

 in pairs; often forming short, irregular, tangential lines, 

 but vessel walls seldom contiguous. Vessels always imbedded 

 within numerous rows of wood-parenchyma fibers. Vessel walls 

 (longitudinal section) uniformly pitted with numerous small 

 bordered pits, ilnd walls of vessel segments nearly horizon- 

 tal, chiefly with circular opening (simple perforation). 

 V/ood fibers about 1,27 m;n. long, with very thick walls and 

 small cell cavities, with a few small simple pits. ',7ood pa- 



