124 New Species of South American Plants 



the remaining venation loosely branched. Panicles axillary, 

 the slender peduncles 6 or 7 cm. long, terete, loosely branched 

 and many-flowered. Pedicels at length 3 or 4 cm. long, fili- 

 form. Calyx-tube turbinate and sharply angled, in flower 

 3 or 4 mm. long, the lobes longer, attenuate from a triangular 

 base, carinate, reflexed in fruit. Corolla more than 2 cm. 

 long, infundibular, slightly curved, strongly ventricose above 

 the middle, the mouth oblique, 7 mm. broad, as pressed, the 

 teeth short, obtuse, erect, or the lower slightly recurved. Ex- 

 serted portion of the equal stamens at length 6 mm. long, the 

 anthers small, linear. Style very slightly exceeding the sta- 

 mens. Calyx-tube considerably elongated in fruit. 



"A shrub or tree to 15 or 20 feet, in a damp ravine above 

 Onaco, 3,500 feet, August 18." (Herbert H. Smith, Colombia, 

 No. 1386.) 



Diastema Williatnsii. 



Sparsely pilose with short, thick, weak, white hairs. Stems 

 a few inches high, leafy, thin and weak, purple, sulcats, the 

 leaves opposite, very unequal. Petioles 8 to 10 mm. long, 

 purple with narrow green margin, the blades 2 to 8 cm. long, i 

 to 3 cm. wide, lance-ovate, equilateral or otherwise, with obtuse 

 or acute base and obtusish summit, irregularly serrate-dentate 

 with obtusish teeth and acute sinuses, very thin, bright-green, 

 the venation weak and inconspicuous. Peduncles axillary and 

 pseudo-terminal, solitary, i-flowered, shorter than their leaves, 

 thick but weak, purplish, costate or sulcate. Tube of calyx 

 from which the corolla has recently fallen i cm. long, the base 

 abruptly and slightly flexed upon the pedicel, slenderly ob- 

 . conical, slightly gibbous at the base, 5-sulcate, fissured on 

 one side from top to bottom, continued a little beyond the 

 ovary, membranaceous, pilose, the lobes unequal, the longest 

 nearly half the length of the tube, oblanceolate, 3 narrow and 

 2 broad, thin, foliaceous, pilose and ciliate. Disk of 5 linear, 

 short, distant, nearly equal purple glands, occupying only 

 two-thirds of the circle. 



"Rio Pelichuco, Bolivia, 4000 feet, August 27, 1902." (R. 

 S. Williams, No. 2475.) 



This plant has the foliaceous calyx-lobes of Gloxinia, and the 

 disk of Diastema. Its fruit is not ripe, but the fissured calyx- 

 tube indicates the dehiscence of Monopyle. The corolla is 

 wanting, but I have little hesitation in referring it to Diastema. 



Phinaea albiflora. 



More or less pubescent throughout. Stems a few inches 

 high, weak, purple, puberulent below, pilose above, leafy, the 



