MULFOKD EXPLORATION OF THE AMAZON VALLEY 



221 



bracts, subtended by membranaceous keeled bractlets. Ovary 

 oblong, a little wider at the truncate summit, densely setaceous- 

 pilose at the base. Sepals about 1 cm. long, one a little wider, 

 olilong with rounded summit, hyaline, finely very many-nerved. 

 Corolla-tube nearly 3 cm. long, very slender, the rest of the 

 flower 1 cm. long, the corolla-lobes subequal, hyaline, 13- or 15- 

 nerved, broadly oval. Petaloid filaments about tw^o-thirds the 

 length of the petals, a short recurved vermiform appendage on 

 one side. Lip a little longer than the latter, subrotund, entire, 

 very thin. Exserted portion of style broadly margined, com- 

 planate, the summit involute, the terminal portion small. Cap- 

 sule 1 cm. long, the three seeds 6 mm. long, light-brown, lightly 

 and coarsely tuberculate. 



San Buena Ventura, 1,000 feet, M. Cardenas, November 26, 

 1921 {no. 1838). 



Calathea stenostachys 



(EucALATHEA.) Steuis, petioles, etc., pubescent, the leaves 

 minutely scurfy, the floral bracts glabrous. Stems short, leafy, 

 a number of aphyllous sheaths at the base. Petiolar sheaths 1 to 

 1.5 dm. long, the petioles only 3 to 5 mm. long. Blades 1 to 2 dm. 

 long, 4 to 6 cm. broad, lanceolate, with rounded base and acute 

 summit, very thin, pale-green. Spikes simple or with one branch, 

 the peduncles elongate and very slender, the rachis 2 to 3 dm. 

 long, the spikes compressed, about 1 cm. broad, the bracts dis- 

 tichous, coniplanate, 1 cm. long, oblanceolate, obtuse, light- 

 brown. Ultimate peduncles 2-flowered, filiform, 7 mm. long, a 

 little longer than the calyx. Flowers sessile, the ovary short, 

 white-tomentose. Sepals rigid, lanceolate, long-acuminate and 

 acute. Corolla-tube about 1 cm. long, very slender, the rest of 

 the flower 7 mm. long. Lip about equaling the petals, spatulate, 

 narrow. Style much shorter than the petals, the summit 

 strongly involute. Fruit not seen. 



Bala, 1,000 feet, H. H. Rushij, November 28, 1921 {no. 1866). 



Calathea Whitei 



(MiCROCEPHALUM.) Stemlcss ; lower leaf-surfaces minutely 

 scurfy, the flower sparsely pilose. Petioles half the length of 

 the blades, or less, broad but closely involute ; costate, with finer 

 intervening nerves. Blades 1.5 to 2 dm. long, obovate, obtusish, 

 involute in drying, very thin, bright-green above, very pale be- 

 neath. Heads closely sessile upon the rhizome, crowded, the 



