New Species of South American Plants 93 



anthers, which are hard and thickened on the back, the thicken- 

 ing yellow. Appendages none or minute. Corpuscle oblong, 

 obtuse, the filaments from its base, somewhat elongated, the 

 poUinia slenderly lance-ovoid. Pod 6 cm. long, narrowly lance- 

 olate and long acuminate and acute, brown, nerved. Seeds 

 comose. 



Tumupasa, Bolivia, 2,400 feet altitude, January 12, 1902.. 

 (R. S. Williams, No. 488.) 



Irmischia angustifolia. 



Young stems, etc., sparsely puberulent. Stems very slender, 

 the intemodes nearly twice the length of their leaves. Petioles 

 about 5 mm. long, very slender. Blades 2 to 3.5 cm. long, 5 

 to ID mm. wide, lanceolate with rounded base and regularly 

 acuminate and pungent summit, thin, deep-green, the venation 

 prominent beneath, the secondaries about 6 on a side, strongly 

 ascending, lightly curved, the remaining venation obscure. 

 Peduncles shorter or longer than their leaves, filiform, the 

 umbel densely few-flowered, the pedicels nearly twice the 

 length of the flowers. Calyx 2 mm. long, thick, parted nearly 

 to the base, the lobes ovate, obtuse. Corolla nearly twice the 

 length of the calyx, the lobes oblong, obtuse, coarsely pilose on 

 the face, recurved. Crown adnate to the corolla only, the 5 

 ligules alternate with the lobes, spatulate, blunt. Stamen- 

 tube slightly elongated, a little longer than the anthers. 



"Twining to 10 feet, in forest, in ravines. Jiracasaca, 

 2,500 feet, September 28. Var of 1676 (?)" (Herbert H. Smith,. 

 Colombia, No. 1677). 



Species very close to 1676, but distinct in every floral char- 

 acter. 



Irmischia aristata. 



Lower leaf-surfaces, etc., minutely downy. Stems very 

 slender, terete, striate. Petioles to 1.5 cm. long, very slender. 

 Blades 3 to 5 cm. long, i to 2 cm. wide, ovate with rounded 

 base and regularly acuminate and cuspidate summit, thin, 

 deep-green, the very slender venation slightly prominent, the 

 secondaries about 7 on a side, abruptly upcurved near the end, 

 the remaining venation obscure. Peduncles filiform, half as 

 long as the leaves or longer. Pedicels densely, umbellate, fili- 

 form, nearly twice as long as the flowers. Calyx 1.5 mm. 

 long, half the length of the corolla, lobed nearly to the base, the 

 lobes ovate, obtuse, ciliate. Corolla parted nearly to the base,, 

 the lobes oblong, obtuse, obscurely pilose on the face, erect, 

 the summits at length recurved. Ligules of the. crown attached 

 to the corolla and nearly equaling it, distant from the stamens, 

 very narrow, and very acute. Stamen-tube more than half as 



