88 New Species of South American Plants 



12 mm. long, stoutish. Calyx-tube 2 or 3 mm. long, the teeth 

 I cm. long, long-attenuate from a lanceolate base. Corolla 

 apparently rose-colored, the tube proper cylindrical, a little 

 longer than the calyx, 2 or 3 mm. wide, the infundibular throat 

 about as long as the tube, the limb about 5 cm. broad. Inner 

 scales of the calyx erect, ovate, about half the length of the 

 ovaries, the disk lobes .oval, about as long as the scales, pilose. 

 Reis, Bolivia, 1500 feet. June, 1886 (Rusby, No. 2694).. 



Dipladenia tetradenia. 



Softly pubescent throughout, except the corolla, which is 

 nearly glabrous. Stems erect, simple, to half a meter high, 

 terete, striate, leafy in the middle portion, the lower leaves 

 rudimentary, the upper ones usually the largest. Petioles ex- 

 tremely short, about as broad as long, the blades 4 to 7 cm. 

 long, 3 to 5 cm. wide, oval-elliptical, or broadly ovate with sub- 

 cordate base and mucronulate summit, thickish, drying brown- 

 ish, the venation weak, not prominent, the secondaries about 

 9 on each side, falcate and obscurely connecting near the mar- 

 gin. Flowers usually 2 or 3, the pedicels to 2.5 cm. long, terete, 

 stiiate, minutely subulate-bi acted at the base, the bracts de- 

 ciduous. Calyx 6 to 8 mm. long, parted to the base, the lobes 

 regularly attenuate from a triangular base. Corolla-tube 8 mm. 

 long, the infundibular throat more than 2 cm. long, the limb to 

 6 cm. broad. Glands 2 or more on each sepal, half as long as 

 the disk, erect, ovate, mostly acutish. Disk more than half the 

 length of the ovaries, of 4 scales, those alternating with the 

 ovaries very broad, 2-lobed, the others narrow, all with rounded 

 summits. Ovaries glabrous. Filaments attached 5 mm. from 

 the base of the corolla, 2 mm. long, broad, densely pilose. An- 

 thers 6 mm. long, the cells separated at the broad rounded base, 

 the narrow upper dark portions a half longer than the broad 

 light-colored lower portions. Stigmas reaching to the middle 

 of the anthers, the ring inversely campanulate, 2 mm. long and 

 broad, the lower margin crenate. 



"Yungas, Bolivia, 1890 (M. Bang, No. 249, distributed as 

 "Dipladenia illustris") Buchtien's No. 3903 from Polo- Polo, 

 is the same, impart. 



In its drisk, point of filament attachment and non-adnate 

 anther bases, this species differs markedly from Dipladenia, 

 but I refraiii from proposing a new genus on artificial grounds, 

 for a plant that belongs so naturally with Dipladenia. 



Dipladenia glabra. 



Glabrous. Stems twining, the branches slender, terete, 

 leafy. Petioles 10 or 12 mm. long, slender above, dilated at the 

 base and the pair connate to form an interpetiolar line or short 



