NEW OR NOTEWORTHY PLANTS FROM COLOMBIA 
AND CENTRAL AMERICA—5. 
By Henry PIrtier. 
INTRODUCTION. 
Another installment! is here offered of results obtained by the 
author within his special field. There are descriptions of new species 
in several families and group studies in the Caesalpiniaceae and 
Bombacaceae. | 
MYRISTICACEAE. 
ANEW SPECIES OF VIROLA AND AN OLD ONE OF COMPSONEURA. 
Virola warburgii Pittier, sp. nov. PuatE 57. 
Section Amblyanthera. A tree 15 to 30 meters high, the trunk 25 to 60 cm. in diam- 
eter at the base. Trunk straight, percurrent; ramification radiate; crown pyramidal. 
Branchlets at first densely ferruginous-tomentose, glabrate in age, dark brown, almost 
shiny. 
Leaves variable in size, leathery. Petioles 1 to 2 cm. long, 2 to 4 mm. thick, 
densely ferruginous-tomentose. Leaf blades 9 to 35 cm. long, 3 to 12.5 cm. broad, 
elliptic, subcuneate, rounded or subemarginate at base, mostly long-acuminate at tip, 
smooth above (except on costa), ferruginous-tomentulose beneath at first but later 
sparsely covered with brown stellate hairs; costa and primary veins slightly prominent 
above, the former often brown-tomentose at first and quite prominent and densely 
tomentose beneath; veins 10 to 15, arcuate and not directly connected along the mar- 
gin; transverse veinlets almost parallel, impressed above on the older leaves only, 
prominent but partly concealed by the tomentum beneath. 
Inflorescences axillary, amply paniculate, the rachis quite densely ferruginous- 
tomentose. Male inflorescence: panicles about 10 cm. long and broad; peduncles 
1.5 to 3. cm. long, up to 3 mm. thick; floral fascicles provided at base with several 
ovate-rounded, caducous bracteoles; pedicels about 1.3 mm. long; perianth about 1.7 
mm. long, funnel-shaped, 3-fid, densely ferruginous-tomentose outside; anthers usually 
6, 0.5 mm. long, shorter than the thick staminal column. Female inflorescence: 
panicles also about 10 cm. long, but branches apparently less developed; flowers not 
known. 
Fructiferous racemes bearing about 10 nuts, the rachis subglabrous. Peduncle 2 
em. long and 4 mm. thick; pedicels 6 to8 mm. long. Fruit obovate or subpyriform, 16 
1 The preceding numbers of this series occur in the Contributions as follows: 12: 
171-181. pls. 18-19. figs. 11-19. January 27, 1909, 18: 93-182. pls. 17-20. figs.2-41. 
June 11, 1910. 18: 431-466. pls. 78-96. figs. 57-91, January 5,1912, 18: 69-86. pls. 
42-56. figs. 76-87. April 16, 1914. 
143 
