70 



10. CITRUS Linn. 



1. C. hystrix DC; Hook. f. Fl. Brit. hid. 1 (1875) 515. 



(2312, 2766 Meyer) December, February; (0828 Elmer) November; (1361, 

 1545, 2730 Borden) July, March; (517 Whitford) July. In forests 100 to 

 1,000 m., widely distributed in the Philippines. British India. Malaya. T., 

 Vabuyao. 



SIMARUBACE^E. 



1. BRUCEA J. S. Muell. 



1. B. luzoniensis Vidal, Sinopsis, Atlas (1883) 19. i. 26. /'. B. 



(181, 480 Whitford) May, July; (0780 Elmer) November; (6165 Leiberg) 

 July; (1700, 2750 Borden) August, March; (2008 Meyer) February, hi forests 

 100 to 800 m. Endemic 



2. B. membranacea Merrill, n. sp. 



A shrub or small tree 5 to m. high, with 3 to 4 jugate, odd pinnate leaves 

 about 20 cm. long, the leaflets nearly glabrous, membranous. BUbentire or rather 

 distantly toothed above, the inflorescence axillary, 10 cm. long or less. Branches 

 light gray, lenticellate, ferruginous pubescent, the younger ones densely so. 

 Leaves alternate, the rhachis more or less ferruginous pubescent; leaflets ovate 

 to oblong-ovate, base slightly inequilateral, rounded or acute, the apex shortly blunt 

 acuminate, 4 to cm. long, 2 to 3 cm. wide, the midrib above and the midrib 

 and nerves beneath ferruginous pubescent, otherwise glabrous; nerves about 7 

 pairs; petiolules densely pubescent, 3 to 4 mm. long. Inflorescence densely ferru- 

 ginous pubescent, axillary, the flowers green, disposed in very small, few flowered 

 cymes along the rhachis, these rvmes 1 cm. long or less, rarely more than three 

 flowered. .Sepals slightly pubescent. Petals ovate to elliptical ovate, not reflexed, 

 1.5 mm. long, glabrous. Ovary glabrous. Staminate flowers similar to the pistil 

 late, the stamens very short, not. exserled. scarcely exceeding the disk. 



(27!)!), 2800 Meyer) March, 1!)05. On exposed ridges at 1.0(10 m. 



This species agrees in some respects with Vidal's description of Brucea luzon- 

 iensis, differing from that species as described by Vidal in its broader, not reflexed 

 petals, very short stamens, and smaller leaves and leaflets, agreeing with his 

 description in its short inflorescence. The specimens above referred t<> Brucea 

 luzoniensis all have very much elongated panicles. 



2. AILANTHUS Desf. 



1. A. philippinensis Merr. Govt. Lab. Publ. 35 (1905) 25. 

 (2719 Borden) February. In forests at 150 m. Endemic. 



BURSERACE^E. 



1. CANARIUM Linn. 



1. C. ahernianum Merrill, n. sp. 



A tree 20 to 25 m. high. Branches thickened, densely ferruginous pubescent 

 with short hairs, the ultimate branchlets often 1 cm. or more in diameter, 

 the leaf scars large and prominent. Leaves crowded toward the ends of the 

 branchlets, 30 to 40 cm. long, 5 to jugate, the rhachis rather densely ferruginous 

 pubescent, becoming somewhat glabrous in age; leaflets oblong, entire, acuminate, 

 the base rounded, often inequilateral, 10 to 14 cm. long. 4 to 0.5 cm. wide. firm. 

 usually shining on both surfaces, often pale when dry, densely ferruginous pub- 

 escent on the midrib above and often somewhat pubescent on I he nerves and 

 reticulations, becoming subglabrous, beneath prominently pubescent mi the midrib 



