330 



MEMOIRS OF THE NEW YORK BOTANICAL GARDEN 



aries, the finer venation strongly anastomosino-. Cymes opposite 

 the leaves, the second leaf of the pair wanting, shortly and very 

 stoutly peduncled, compound, very densely flowered. Flowers 

 sessile or nearly so. Bracts nearly 2 cm. long, shaped like the 

 leaves. Calyx parted to the base, the lobes oval, about 8 mm. 

 wide, keeled on the inner face, the extremity of the keel thick- 

 ened, extended into a short indurated acute cusp and bearing a 

 short inflexed awn, the base bearing 5 ovate pilose scales, 4 or 5 

 mm. long, their summits fimbriate. Corolla-tube about as long as 

 the calyx, 6 or 7 mm. wide, the limb more than 2 em. wide, the 

 lobes large, rounded. Corolla bearing a strongly thickened ring 

 at the base of the lobes. Only one ligule seen, this attached some 

 distance below the ring. Filaments slender, about half the 

 length of the anthers, which are 6 mm. long, short-acuminate, 

 sagittate, the basal lobes acute, about 1 mm. long. Disk nearly 

 twice the length of the ovaries, of 5 more or less connate, equal 

 scales, which are obtuse, slightly notched at the summit, and fur- 

 rowed down the back. 



Ixiamas, 800 feet, M. Cardenas, December 17, 1921 {no. 

 1928). Species very near P. latifolia Benth. 



Prestonia cephalantha 



Entire plant, with the exception of the upper leaf-surfaces, 

 densely clothed with a short yellow tomentum. Branches elon- 

 gated, twining, stout, terete, wath elongated internodes. Petioles 

 1 to 2 cm. long, very stout. Blades to 1.5 by 1 dm., ovate, acute, 

 with rounded base, entire, thick, above very minutely papillose- 

 hairy and pilose on the veins, which are narrowly impressed, all 

 the venation stoutly prominent beneath, the secondaries 10 or 12 

 on each side, widely spreading, the ends up-curved to connect in 

 a marginal line, and connected by numerous tertiaries, the finer 

 venation finely and strongly anastomosing. Inflorescence capi- 

 tate, densely many-flowered, the heads about 5 cm. broad, shortly 

 and stoutly peduncled. Pedicels 5 mm. long, very thick, hirsute, 

 like the cah^x and corolla. Calyx parted almost to the base, the 

 tube subrotate, the lobes about 12 mm. long, oval or ovate, acute 

 or mucronate, thick. Scales 4 mm, long, erect, lance-ovate, acute, 

 densely hirsute. Disk annular, very short. Corolla salver-form, 

 the tube 15 mm. long, about 4 mm. broad, the lobes about 1 cm. 

 long, suborbicular. Anthers shortly exserted, 5 mm. long, the 

 basal lobes short, narrow, very acute. Ovaries blackish, stout, 

 shorter than the scales. 



Ixiamas, 800 feet, M. Cardenas, December 17, 1921 {no. 

 1928). "Flowers yellow. Growing in sandy loam, in sunshine." 



