109 



2. ARTHROPHYLLUM Blume. 



1. Arthrophyllum ahernianum Merrill, Bp. now 



A tree about 1'2 m. high, with very long pinnate leaves, the lea Nets oblong 

 to oblong lanceolate, short acuminate, glabrous. Leaves ii]) to 1 ni. in Length, 

 the upper ones much smaller, the lower ones with 30 or more leaflets, the upper 

 ones with 5 or (i leaflets, the rhaehis jointed, glabrous; leaflets 10 to IS em. 

 long, 2.5 to 5 em. wide, membranous, pale when dry, entire, the base rather 

 abruptly acute, usually strongly inequilateral, the apex short acuminate, the 

 acumen blunt or sharp; primary nerves about (i on each side of the midrib, 

 arched ascending, somewhat prominent, the secondary nerves and reticulations 

 distinct beneath, lax; petiolules 5 to 10 mm. long. Umbels subtended by .'i or 



4 elliptical ovate leaves nearly as long as the umbellules, each umbel consisting 

 of 8 to 10 umbellules, glabrous or deciduously ferruginous pubescent; umbellules 

 10 to lf> flowered, the peduncles 4 to 5 cm. long, the pedicels 1 cm. long or less. 

 Calyx about 3 mm. long, truncate. Petals 6, oblong ovate, acute. 4 mm. long, 

 about 2 mm. wide, free. Stamens 5; filaments 5 mm. long; anthers curved, 

 aliout 2 nun. long. Ovary 1 -celled. 1-ovuled; style (). Fruit unknown. 



(2780 Meyer) February; (Whitford). In dense forests on steep slopes at 

 about 600 m., differing from Arthrophyllum pinnatum Clarke, to which it is 

 apparently related, in its much longer leaves and larger more numerous leaflets 

 which are not caudate acuminate. 



3. SCHEFFLERA Foist. 



1. S. blancoi nom. nov. Nauclea diyitata Blanco, Fl. Filip. ed. 2 (1845) 102; 

 ed. 3, 1 (1877) 188, non Scheffleru digitata Font. Heptaplewrutn oephalotes 

 F.-Vill. Nov. App. (1883) 102, non Clarke. § Gepkaloschefflera. 



(.1847 Merrill) August; (2834 Meyer) .March. On forested slopes in ravines 

 and on exposed ridges in the mossy forest 000 to 1,000 m. Endemic. 



2. Schefflera acuminatissima .Merrill, sp. nov. 



Scandent on trees, reaching a height of 15 in. Branches gray or brownish, 

 glabrous, striate, the ultimate branchlets often with few scattered stellate 1 hairs. 

 Leaves digitately 7 to 10 foliolate. alternate, the common petiole glabrous, 11 to 

 17 cm. long; leaflets narrowly oblong lanceolate or oblanceolate, glabrous sub- 

 membranous, slightly shining above, the apex prominently slender caudate 

 acuminate, often abruptly so, the base acute or slightly rounded, the margins 

 entire, 8 to 15 cm. long, 2 to 4 cm. wide, for most part widest in the upper 

 portion; primary nerves 15 or more on each side of the midrib, scarcely more 

 prominent than the secondary nerves and reticulations, anastomosing; petioles 

 slender, glabrous, 2 to 3.5 cm. long. Panicles terminal, each with 4 or 5 ascend- 

 ing branches 15 cm. long or less, the rhaehis and branches more or less covered 

 with weak, pale, somewhat stellately disposed hairs, the primary branches bear- 

 ing numerous racemosely disposed slender, usually spreading 1 cm. long branch- 

 lets, each subtended by a deciduous, membranous, ovate or ovate lanceolate, 

 acuminate bract about 1 cm. long, the flowers umbellately disposed at the tips 

 of the branchlets, about 10 flowers in each umbel, their pedicels 1.5 to 2 mm. 

 long. Calyx funnel shaped, truncate, 2 mm. long. Petals 5, greenish, narrowly 

 ovate, acute, glabrous, 2 mm. long, 1.2 mm. wide, slightly united at their tips, 

 separating from the base and falling as a whole. Stamens 5; filaments slender, 



5 mm. long; anthers 1 mm. in diamener. Ovary 5-eelled. Fruit yellow, ovoid 

 to elliptical ovoid, 4 to 5 mm. long, 5-celled, 5-ridged, truncate, crowned by the 

 flattened styles. 



