parum inflatus in tertia parte superior: deinde ad_ orifi- 
cium constrictus, glaber, limbo patenti, violaceo deinde 
albo, ad orificium parum incrassato, obovato-rotundato, 
albo, lobis subaequalibus, rotundatis. Stamina et stigma 
in tubi parte superiori inclusa. Capsula ovoideo-conica, ob- 
tusa vel mucronata, pericarpio tenul, siccitate chartaceo- 
crustacea. Semina 10-20, oblongo-reniformia, aliquantu- 
lum angulata., 
A subsp. grandiflora floribus et fructibus minoribus, 
tubo corollae rectior et annulo fauci obovato differt. 
Tyrer: RIE. Schultes, RLF. Raffauf’ & D. Soejarto 24108, Colombia, 
Comisaria de Amazonas, Rio Amazonas, near mouth of Rio Loretoyacu 
and Puerto Narino. *“Bush 12 ft. Flowers white or purple. Poisonous 
to cattle. Sanango. Alkaloid: very positive. 18-15 Sept. 1966 (Holo- 
type, GH; Isotype, ECON). 
Shrub to small tree 1-5 m. tall, often branched from 
near base. Branches slender, ascending then spreading, 
often arching, subterete, glabrous, leafy. Bark thin, light 
brown, shining, splitting lengthwise, then crosswise, the 
outer layer shedding in thin flakes. Branchlets glabrous, 
1-3 mm. in diameter, green to yellowish brown, epider- 
mis cracking longitudinally, internodes 1-8 cm. long. 
Leaves more or less two-ranked, scattered along branch- 
lets, lanceolate, oblong or elliptic, apically long acumi- 
nate, the acumen subfalcate, basally obtuse to narrow 
cuneate, 6-20 cm. long, 2-8 em. wide, glabrous, thick 
membranaceous to subcoriaceous, dark green above, pale 
ereen beneath, usually dull, nervation more or less promi- 
nent beneath, lateral nerves 5-9, spreading, arcuate, 
anastomosing within margin, veinlets finely reticulate ; 
petiole short, stout, 2-6 mm. long, subterete, canalicu- 
late above, glabrous, rarely puberulent. Inflorescence 
variable, terminal or subterminal, compact or lax, usu- 
ally branched, rachis 10 40 mm. long, bracteate, gla- 
brous, 3- to many-flowered. Bracts small, lanceolate, 
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