MULFORD EXPLORATION OF THE AMAZON VALLEY 



357 



and sliarply toothed, fissnrod on one side, ultimately to the base, 

 nienihi-anaceous, ])ul)eruleiit. Corolla violet, with lighter tube, 

 closely pubernleiit, broadly infundilmlar, 4 oni. long to the base 

 of the lobes the contracted basal portion little longer than the 

 calyx, the lobes rounded, nearly 3 cm. long, strongly veined. 

 Longer filaments 2.5 cm., the shorter 2 cm. long, the thecae di- 

 vergent, 2 nun. long, oblong. Styles slightly exceeding the sta- 

 mens, the stigma ovate, obtuse, 1.5 mm. long. Ovary 3 mm. long, 

 lanceolate, pubescent. Disk annular, spreading, the margin 

 crenulate or finely sinuate. 



Rurrenabaque, 1,000 feet, //. H. Ilushij, October 7, 1921 {no. 

 774). 



Jacaranda atropurpurea 



Youngest portions, lower leaf-surfaces, etc., minutely puber- 

 ulent. Branchlets elongate, slender, fleshy. Leaves (rather 

 young), about 2 dm. long, the petiole about a fourth of the 

 length, the leaflets mostly 7 or 9, opposite, about twice the length 

 of the winged internodes, of which the wings gradually widen 

 upward. Leaflets sessile, irregularly lance-oblong, short-acumi- 

 nate at both ends, minutely mucronate, entire or obsoletely ser- 

 rulate, very thin, dark-green, the venation obscure, the secon- 

 daries 6 or 8 on a side, strongly ascending. Flowers in small 

 loose panicles from the Avood, sessile or short-peduncled, the 

 branches and flowers opposite, the bracts linear, acute, 3 or 4 

 mm. long, the pedicels mostly with a pair of minute bractlets 

 above the middle, very slender, of irregular length, some nearly 

 2 mm. long. Calyx 5 mm. long and liroad, campanulate, many- 

 nerved, shallowly crenate, the teeth mucronate. Corolla about 

 6 cm. long, the tube infundibular, nearly 1 .5 cm. broad at the 

 base of the lobes, as pressed, the lobes broad and rounded, about 

 1 to 1.5 cm. long, the corolla deep-purple or maroon. Anthers 

 about half the length of the corolla, one pair a little shorter, the 

 filaments curved, flattened, brown-purple, yellow and slightly en- 

 larged at the summit, the base flattened and densely pilose, like 

 the inside of the corolla-tube at that place. Thecae horizontally 

 divergent, each about 1.5 mm. long, acuminate and acute. Disk 

 crateriform, thick, lobed. Ovary ovoid, shorter than the calyx. 

 Style thickish, two thirds of the length of the corolla, the stigma 

 shortly 2-lobed, the lobes flattened. 



Near Rurrenabaque, 1,000 feet, 0. E. White, October 8, 1921 

 {no. 862). "A shrub to 8 feet, the flowers dark maroon-purple. 

 Leaves reputed remedial in syphilis." 



