MULFORD EXPLORATION OF THE AMAZON VALLEY 



375 



My specimen of this plant is very imperfect, consisting- of 2 

 branches, one leafy, the other hearing a single fruit. Its stipules 

 are not typical of Basanavantlia, but the fruit and seeds are. 



Basanacantha mollis 



(Pistillate plant.) Gray-pubescent. Branchlets rather stout, 

 spreading, leafy and spiny only at the ends. Spines about 1 cm. 

 long, pungent. Stipules 6 mm. long, ovate, thin, brown, nerved, 

 keeled, cuspidate. Petioles 1 cm. long, broad. Blades to 1 dm. 

 or more long and half as wide, abruptly short-acuminate at both 

 ends, very thin, entire, or obsoletely dentate near the summit, 

 pale-green above, gray beneath, the venation not prominent, the 

 secondaries 10 or 12 on each side, widely spreading, then falcate. 

 Cymes terminal, sessile, few-flowered, l^edicels filiform, 1.5 to 

 2 cm. long-. Calyx-tube 3 mm. broad, shortly and broadly tur- 

 binate, 5-lobed, the lobes 3 or 4 mm. long, narrow with attenuate 

 summit. Corolla-tube 2 cm. long, slender, narrowed upward, 

 10-sulcate, the limb 2 cm. broad, widely spreading. Anthers 2 

 or 3, imperfect, nearly sessile in the throat of the corolla, 3 mm. 

 long, oblong. Stigmas 3, a little exceeding the stamens, 2 mm. 

 long, shovel-shaped, the style filiform. 



Rurrenabaque, 1,000 feet, H. H. Rushy, October 12, 1921 {no. 

 1255). "A shrub, in the forest." 



Alibertia Tutumilla 



Glabrous, excepting the flowers. Branchlets short, rather 

 stout, reddish-brown, roughened with leaf scars, very leafy. 

 Stipules nearly 1 cm. long, connate at the base, thin, brown, cadu- 

 cous, leaving a very shortly setose base surrounding; the stem. 

 Petioles nearly 2 cm. long, reddish, like the midrib, rigid, 

 strongly channeled above. Blades to 2 dm. long, and 8 cm. broad, 

 lance-oblong, the base tapering into the petiole, acuminate and 

 acute at the summit, entire, thick! sh and rigid, deep-green, some- 

 what shining, the slender venation prominent beneath, the sec- 

 ondaries al)out 12 to 14 pairs, the lower opposite, more or less 

 decurrent on the midrib, widely spreading, the outer portions 

 strongly curved. Flower terminal, subsessile, solitary, sub- 

 tended by 2 or more broadly ovate bracts resembling the stip- 

 ules. Calyx-tube 7 mm. long, 5 or 6 mm. broad, obovoid, some- 

 what constricted at the summit, the limb about as long and 

 broad, the base slightly dilated, darker than the upper cylindric 



