THE FLORA OF MOUNT HAbCON. 291 
ARTHROPHYLLUM Blume. 
Arthrophyllum sp. 
In forests at 700 in. alt. {No. 5597), fluweic; iiumature, apparently representing, 
an undeseribed species. 
ARALIA Linn. 
Aralia glauca Merrill n. sp. 
Arbor ad 10 m. alia, rainis ramuHs Xoliisqiio inerjiiibus; folii.s bipin- 
natis 40 ad 50 cm. long-is^ piniiis 5-jiigatis ?0 ad 30 cm. longis; foliolis 
4 ad 7-JTigatis, oblongo-ovatis, acuminatis 6 ad 11 cm. loiigis, subtus 
pallidis; panieulis terminaliburi 50 cm. vol idtra loiigis ot latis, ramis 
elongatis ad 40 cm. loiigis, ramulis racemo,se ditipositis, 4 ad G cm. 
longis; ovario 5-loeulare. 
A spineless tree about 10 m. bigb, tlie branches thickened, the nltimate 
ones 1.5 to 2 cm. in diameter, lenticellate, striate wlien dry, glabrous 
or nearly so, the large bipinnate leaves crowded at the apices of the 
branches, the inflorescence of several large spreading terminal panicles. 
Leaves about 50 cm. long, the pinnse 5-jugate, opposite, the rachis 
glabrous terete, enlarged at the nodes which arc prominently jointed, the 
petiole 20 to 25 cm. long, glabrous; pinnje 20 to 30 cm. long, the lowest 
pair shorter; leaflets 4 to 7-jugate^ opposite, oblong-ovate to oblong- 
lanecolate, glabrous, subcoriaccous^ dull, the lower surface glaucous, 6 to 
11 cm. long, 2 to 4 cm. wide, the base rounded or cordate, gradually 
narrowed above to the rather prominently acuminata apex, the margins 
distantly irregularly sinuatc-crenate, the teeth frequently apiculate, 
nerves 5 to 6 on each side of the midrib, rather prominent beneath; 
petiolules 1 to 4 nun. long. Panicles at least 50 cm. long and about as 
wide, several from the apex of the same branch, the branches racemosely 
disposed, about 40 cm. long, tiie rachis thick, about 20 cm. long, slightly 
hirsute, branches slightly ferruginous-pubeticent, the brauchlets and 
pedicels rather densely so; brauchlets racemosely disposed, slender, 4 to 
6 cm. long, numerous, each supplied with many scattered lanceolate 
acuminate bracts or bracteoles 2 to 3 mm. long the flowers umbcllately 
disposed, usually 2 umbels towards the apex of each brancldet and fre- 
quently solitary flowers in the axils of the upper bracts below the umbels. 
Umbels 15 to 20-flowered, the pedicels 5 mm. long or less. Flowers 
(immature) white, petals 1.5 nun. long. Calyx 1.5 mm. long, the lobes 
5, broadly ovate, acute, 0.3 mm. long. Stamens 5; anthers 1 mm. long. 
Ovary 5-celled; styles 5, free, 1 mm. long. 
In forests at 700 m. alt. (No. 6177), locally rather abundant and recognizable 
by being entirely unarmed. 
Tlie very spiny Aralia hypohitca Presl is abundant on recent "slides" on Halcon 
at an altitude of about 1,800 m. It is wiilely distributed in the Pliilippirir^ and 
lias been redneed by Forbes and llcmslcy to the \cry widely distributed Alalia 
spiiiosa Linn. 
