^§"^0 Leaflets of Philippine Botany [Vol. V, Art. 9o 



STERGULIACEAE 



Pterospermum perrinii Elm. n. gp, 



A metHum sized tree; stem 3 dm. thick, crooked, terete, 

 10 m. high, branched mainly at tiie top; wood iight, soft, 

 its sapwood only thin and white, otherwise p lie roseus or 

 the color of the wood in lead pencils, odorless and tastelesri; bark 

 thick, nearly atropurpureus except the smoothish or only 

 obscurely checked gray epidermis; branches spreading, slender, 

 soft as leather in texture, the younger portion densely isa- 

 bellinus tomentose. Leaves alternate, scattered, horizontal or 

 descending, curvingly folded wpon the upper deep green surface 

 which turns black while drying, apex broadly rounded but 

 terminated by very short and abrupt acute points, thinly 

 coriace )us, entire, very unequal in size, glabrous above, dense- 

 ly isabellinus tomentose on the nether side, usually unequi- 

 lateral and truncately rounded or subcordate at base, ovately 

 to truncately elliptic or subrotund, usually widest toward the 

 base but occasionally above the middle, the larger lamina 

 7 by 10 cm, yet the terminal ones frequently less than one 

 half as large; midrib conspicuous and similarly tomentose 

 beneath, shallowly grooved and glabrous obove; the lateral 

 nerves 5 to 7, very oblique and parallel, similar in vestiture, 

 the basal pair with several sublateral nerves on the outer or 

 lower side, the cross bars faint yet evident from both sides; 

 stipule less than 1 cm. long, unequally sagittate at the broad 

 base, apex acute, deciduous. Flowers usually solitary from 

 the leaf axils, nearly odorless, upon I to 3 cm. long tawnv 

 tomentose stalks; calyx contracted into a 1 cm. long fulvus 

 scurfy stipe; segments valvate, 5, flavo-virens above, fulvus 

 scurfy bennath, spliting from apex to the base, 4-5 cm. 

 long, nearly 4 ram. wide, leathery, linear, gradually tapering 

 toward the acute apex; buds almost 5 cm. in length, sub- 

 tended by caducous bracts; stalk of the sex organs 7.5 

 mm. long, 2 mm. thick, glabrous, slightly enlarged toward 

 the basal concrete portion; petals deciduous, creamy white, 

 strongly twisted and imbricated, 3 to 5 cm. long, glabrous, 

 oblong, narrowed toward the free base, 6 to 8 cm. long; 

 stamens of the same color, about 20, arising from the basal 



