MULFORD EXPLORATION OF THE AMAZON VALLEY 



345 



stout, flexuous, terete, gray. Petioles about a fourth of the 

 length of tlie blades, slender, terete, divaricate or recurved. 

 Blades to 8 by 5 cul, ovate, acute, with oblique obtuse or acutisli 

 base, coarsely dentate, with 2 or 3 large teeth on each side, the 

 teeth broadly triangular, blunt and pointing outward, the broad 

 sinuses obtuse or rounded, about as large as the teeth; thickisli, 

 grayish-green above, gray and densely tomentose l)eueath, the 

 venation coarse, prominent, though little elevated beneath, the 

 secondaries about 7 to 9 on each side, diverging at about 45 

 degrees, little curved but rather crooked, coarsely branching. 

 Pseudo-racemes lateral, the peduncle nodose, as with scars of 

 fallen flowers. Pedicels, in floAver, 1 to 1.5 cm. long, slender. 

 Mature bud 2 cm. long, 5 mm. broad at the base, lanceolate, 

 blunt, the sununit usually a little oblique, the calyx about a 

 fourth of the length, divided almost to the base, tomentose ex- 

 ternally, nearly glabrous within, thin, the tube shortly and 

 broadly Campanulate, the lobes ovate, subtruncate and bearing a 

 stout awn about half as long as the body. Corolla tomentose, 

 divided nearly to the base, apparently white, the lobes ovate. 

 Stamens equal, 5 nun. shorter than the corolla, the lilaments very 

 short, the anthers lance-linear, tapering regularly from base to 

 summit, the summit lightly curved, truncate, the pores rather 

 large, looking inward and a little upward. Style stout, 2 or 3 

 mm. longer than the stamens, the summit lightly curved. Fruit 

 unknown. 



In copses on the jjampas near Lake Rogagua, 1,000 feet, M. 

 Cardenas, November 7, 1921 {no. 1695). 



Solanum arachnidanthum 



Armed Avith very short stout strongly laterally flattened re- 

 curved yellow shining pungent prickles. Densely, shortly and 

 harshly tomentellate, Avith stellate hairs, and of a yellowish 

 gray-green. Branchlets short, stout, flexuous, terete. Leaves to 

 8 by 2 cm., tapering into a petiole-like base, acutish, or some- 

 times acuminate, sometimes entire, but usually sinuous, with one 

 to three coarse teeth on each side, thickisli, scabrous on both sur- 

 faces, the hairs appressed, slender but rigid, the secondaries 

 about 4 on each side, coarse and crooked. Racemes lateral, ses- 

 sile or short-petioled, few-flowered. Pedicels 5 to 8 mm. long, 

 rather stout. Calyx-tube broadly campanulate, about 2 mm. 

 long by 4 mm. broad, the teeth subulate, about as long as the 

 tube. Corolla, just before opening, 5 cm. long, the summit ob- 

 tuse, strongly recurved, in flower parted almost to the base, the 



