MULFORD EXPLOKATIOX OF THE AMAZON VALLEY 



287 



with short stig-mas at the base. Bracts of the flowers having 

 k)ng stigmas bright-green, thin, semicircular or reniform, 3 mm. 

 broad, flabellately nerved, lacerate-dentate, the teeth ending in a 

 h)iig seta. Ovary small, snbglobose, pilose, the stigmas red, 

 more than 1 cm. long, much-divided and pilose. Bracts of the 

 flowers with short stigmas similar but broader. Stigmas similar 

 but small, shorter than the calyx. Staminate plant not seen. 



Rurrenabaque, 1,000 feet, Martin Cardenas, October 7, 1921 

 {no. 1554). "A tall shrub." Also collected by the author at the 

 same place, October 4, 1921 (no. 783). This specimen bears no 

 flowers with long stigmas, as does uo. 1554, but it has a single 

 spike of staminate flowers, about 5 cm. long and 2 or 3 mm. wide, 

 rather densely flowered. 



Acalypha bopiana 



Shortly and densely gray-tomentellate throughout. Stems 

 much-branched, the branches short, rather stout, terete. Stipules 

 5 or 6 mm. long, subulate with attenuate summit, reddish, pilose. 

 Petioles 2 to 6 cm. long, terete. Blades 1 to 2 dm. long, 4 to 8 cm. 

 wide, lanceolate, with rotund or subcordate base and short-acu- 

 minate and acute summit, finely and very lightly crenate-den- 

 tate, thin, grayish-green, the slender venation prominent be- 

 neath, the secondaries 10 or 12 on a side, in addition to 2 pairs 

 of short basal nerves, regularly falcate-ascending, not inter- 

 connecting at the margin, connected by numerous tertiaries. 

 Staminate spikes axillary, shorter than their leaves, sessile, slen- 

 der and curving, about 2 mm. thick, densely flowered. Pistillate 

 spike terminal, sessile, densely flow^ered, about 1 cm. broad. 

 Bracts of the pistillate flowers about 6 mm. long and somewhat 

 wider, the summit incisely dentate, the teeth attenuate, the mid- 

 dle one longer than the other, the edges connate at the base 

 around the flower. Sepals 5, hyaline, pubescent, ovate, long- 

 acuminate, about as long as the ovary, which is pubescent, 

 broader than long, strongly lobed, the styles many times longer 

 than the ovary, distinct almost to the base, sparingly plumose. 



Cataracts of the Bopi Eiver, 3,000 feet, H. H. Rushy, Septem- 

 ber 3, 1921 {no. 478). "A large shrub on the river-bank." 



Dalechampia albibracteosa 



Softly short-puberulent. Stems slender, elongate, finely stri- 

 ate. Stipules about 5 mm. long, lanceolate, acuminate, inequi- 



