25 



Type specimen: Bosoboso, rioviiae of Rizal. Luzon {HAii Aliein's col- 

 lector), December, 1904. A species apparently closely related to Parn- 

 migyna monophyUa Wight, differing in its longer peduncles and other 

 characters. This is undoubtedly the species credited to tiie Pliilippines by 

 F.-Villar ' and Vidal - as P. nionophylla. 



SIMARUBACE.E. 



Ailanthus philippinensis, sp. nov. Ailaiillius pongelimi Blanco, Fl. Filip. 

 ed. 1. .380. 1S;J7; ed. 2, 280. 184.5; ed. 3, 2:134, non Gmel. ; A. 

 malabarica F.-Vili. Nov.' App. 349. 1883, non DC; A. moluccana 

 Merr. Forestry Bureau Bull. 1:27. 1903^ non DC. % EuaUanthuH. 

 A large tree, reaching a height of about 40 ra. with nearly glabrous, 12 

 to 16 jugate leaves, the leaflets falcate, oblong-lanceolate, the base strongly 

 inequilateral, the apex acuminate, with a single prominent gland at the 

 apex on the lower surface, the fertile panicles, in anthesis, shorter than 

 the leaves, the samara 5 cm. long. Branches thickened, brown, the leaf 

 scars large and prominent. Leaves alternate, odd pinnate, 50 to 70 cm. 

 long, the rhachis minutely pubescent or nearly glabrous, often somewhat 

 pruinose: leaflets entire, opposite, or subopposite below, 9 to 15 cm. long, 

 2.5 to 4 cm. wide, usually slender acuminate, the tip of the acumen some- 

 what dilated by the prominent gland on the lower surface, base strongly 

 inequilateral, the upper half rounded or cordate, the lower half acute, 

 glabrous on both surfaces, or very sparingly pubescent on the midrib below, 

 shining above, dull beneath; nerves 14 to 16 on each side of the midrib; 

 petiolules slender, about 1 cm. long. Fertile panicles slender, in anthesis 

 25 cm. long or less, the rhachis and branches more or less ferruginous 

 pubescent, the latter spreading. 3 cm. long or less, the panicles much 

 elongated in fruit. 40 cm. long or more. Fertile flowers yellow, odorless, 

 4 to 5 mm. long, their pedicels 3 to 4 mm. long. Calyx small, slightly 

 pubescent, the teeth acute. Petals glabrous, lanceolate, acute, 4.5 mm. 

 long, aboiit 1.5 nun. wide, somewhat concave. Stamens included, 10: 

 filaments 3 mm. long; anthers about 0.5 mm. long. Ovary glabrous, the 

 carpels 3, free, flattened, oblong, obtuse, 2.5 mm. long; styles united, 1.5 

 mm. long; .stigma 3-lobed. Samara flat, oblong, glabrous. 5 cm. long. 2.5 

 cm. wide, the wings thin, obtuse, the seed in the middle, circular. 



Specimens examined, all from Luzon: Province of Bataan (2719 Borden), 

 February, 1905 (flower); Province of Tayabas. Pitogo (2137 Merrill). 

 April. 1903 (fruit); Province of Camarines Sur, Pasacao (93 Alieru ) . 

 March. 1902 (fruit). 



On securing flowering specimens of this plant and examining the same 

 it was at once evident that the specimens were referal)le to neither Ailnnthun 

 malabarica as deteiTnined by F.-Villar. nor to .t. moluccana as previously 

 determined by the author. Ailanthu.t philippinrtiftis is apparently most 

 closely related to .1. (jlnndulosa Desf.. tlif only s])e(ies nicntioued by Engler 

 in his section Euailanthus. 



'Nov. App.. 37, 1880. 'Rev. PI. Vase. Filip.. 77. 1886. 



