El árbol de saliva

What at first seems like a godsend on the Grendon farm soon turns out to be a never-ending source of trouble. The meteorite has brought with it some strange beings who want to destroy humanity, and the young Gregory Rolles soon senses that something strange is happening and starts a complex investigation... This is how The Saliva Tree begins, without a doubt the best known of the Aldiss stories, clear and disturbing tribute to H.G. Wells for which he won the Nebula Award in his day and who is considered the master of the story and the short story.