MULFORD EXPLORATION OF THE AMAZON VALLEY 



211 



purple, narrowed, and the obtuse sunnuit dilated. Ovary briglit- 

 green, 5 nnu. broad and about half as long, 4- or 5-lobed, the lobes 

 rounded on the back, the summit nearly plane. Style 4 mm. long, 

 stout, white, fleshy. Stigma yellow, glutinous, 2.5 mm. broad, 

 lightly 4- or 5-lobed. 



Conn 8 cm. liroad, 3.5 cm. high, the base broadly rounded, 

 the sunmiit nearly plane, surmounted by a dark-colored disk 3 

 cm. broad and 1 cm. high, from which emanate a number of thin 

 white rhizomes about 6 cm. long, which bear the fibrous roots. 



The description is drawn from the living plant in the con- 

 servatory of The New York Botanical Garden. Collected by the 

 author at Rurrenabaque, 1,000 feet, October, 1921. Growing in 

 damp soil along a roadside through the forest. Also collected 

 by 0. E. White in the same locality, November 30 {no. 2302), and 

 at Huachi, 3,000 feet, September 24 {no. 1077). Species nearest 

 to T. Hasslerianum Chodat, which has a similar slender stami- 

 nate portion of the spadix. 



In Bolivia, this corm is known as "soliman," a name that is 

 applied to a number of Araceous rhizomes, as well as to Hura. 

 These Araceous products are said to be used in the manufacture 

 of arrow-poisons, but the native information regarding their 

 use appeared rather indefinite. 



Mayacaceae 



Mayaca boliviana 



Glabrous, with the exception of a few scattered hairs upon 

 the leaf-bases. Stems mostly 3 to 5 cm. long, stout, pale-green, 

 densely leafy. Leaves deep-green, sessile, 3 to 6 mm. long, the 

 larger nearly 1 nun. wide at the base, tapering regularly from 

 the base to the attenuate summit, the slender midrib prominent. 

 Peduncles slender, erect-spreading, 4 to 6 cm. long. Sepals 

 strongly reflexed, 3 mm. long, less than 1 mm. wide, tapering 

 regularly from the base, obtusish. Petals 5 mm. long and wide, 

 obovate with rounded summit, deep-pink, finely 7- to 9-nerved. 

 Stamens 3 nun. long, the slender filament a fourth of the length 

 and about as long as the broad terminal appendage, which at 

 length divides into two. Ovary about as long as the filaments 

 and as broad as long, the filiform style a little longer than the 

 stamens, the stigma obscurely 3-lobed. 



