154 



subcorlaceous, the petioles terete, 0.5 to 2 cm. long, the 

 blades cvate-elliptic, attenuate at the base, obtuse at the 

 apex, 4 to 10 cm. long, 1.5 to 4 cm. broad, sublustrous 

 above, glaucous with salient, pubescent or villous venation 

 beneath; stipules small, pubescent. Inflorescence corymbiform, 

 trichotomous, terminal, the ultimate branchlets ending in 

 a 3-geminate cluster of flowers, of which the middle one is 

 sessile and the lateral ones are short pedicelled; calyx 

 4- toothed, one of the teeth often sepal-liJce, the olawlet 

 then 1 cm. long and slender, the blade ovate or rounded, 

 attenuate or emarginate at the base, about 2 cm. long and 

 broad, white; corolla tube about 3 mm. long, wooly inside, 

 the 4 lobes about 5 mm. long; stamens 4, inserted at the 

 throat of the corolla and alternate with the lobes; ovary in- 

 ferior, ovoid, minutely pubescent; style short, smooth or 

 hairy at the base, bilobate^ Capsule oblong, 7 to 9 mm. 

 long, glabrous or pubescent, co state, opening in 2 valves; 

 seeds very small, ovate, winged. 



leaves, there is almost always a small opening corresponding 

 with a cavity in the parenchyma and protected by long crossed 

 hairs. The cavities (Acarododomatien of the German bota- 

 nists) usually shelter tiny mites; they are found en the 

 leaves of many species of i^ubiaceae as also in other groups 

 of the vegetable kingdom. 



Description of the wood 



Practically no distinction between sapwood and heartwood 

 Wood hard, heavy, strong, very fine-grained and durable, 

 taking a good polish. Faint annual rings of growth recogni- 

 zable only under the high power microscope. 



Pores (transverse section) very numerous, small (.06 ram. 

 in diameter), round, open, arranged singly or less often in 

 short radial rows, vessels in such rows only seldom conti- 

 guous. Vessel walls ^^longitudinal section) with numerous 

 small simple or bordered pits. Jnd walls completely ab- 

 sorbed, usually nearly horizontal and circular or elliptical, 

 Wood fibers about 1.34 mm. long, with thick walls and small, 

 simple, slit-like, oblique pits. Wood-parenchyma fibers 

 Si^aringly developed, usually present only around vessels. 

 Pith rays very abundant, narrow, barely visible under nand 



