09 May 1966.
San Martín, Peru
Locality: Coll. Prov. San Martin. Tarapoto. About 2.5 km E of Tarapoto on road to Shapaja. DHT.
Environment description: Large colonies on land cleared 3-7 years ago and currently cut or burned periodically. Very aggressive.
Comment: Not much seed - 2 weeks too early for good seed.
Collector(s):