grammatophyllum(n = noun.plant) genus grammatophyllum - small genus of large epiphytic or terrestrial orchids of southeastern Asia to Polynesia; the giants of the Orchidaceae having long narrow leaves and drooping flower clusters often 6 feet long;
A small genus of large epiphytic or terrestrial orchids of Southeastern Asia to Polynesia; the giants of the Orchidaceae having long narrow leaves and drooping flower clusters often 6 feet long. [WordNet 1.5]