A Dennitzan Forest

On Dennitza, Dominic Flandry and Kossara Vymezal land in a forest. Poul Anderson must show that this forest is not interchangeable with a Terrestrial equivalent. There is:

mahovina turf;
woodland "duff," the two relevant meanings of "duff" being plant litter and detritus;
the local equivalent of evergreens - low, gnarly trees, their branches plumed blue-black;
shrubbery but no real underbrush;
open sod.

Anderson sometimes describes a local equivalent of grass, e.g., on Aeneas, Avalon, Talwin and here.

There is also "...a meadow of long silvery quasigrass..." on Starkad. (Ensign Flandry, Chapter Eighteen IN Young Flandry, p. 187)

Shalmu has "...whispering silvery psuedograss..." (The Rebel Worlds, Chapter Three IN Young Flandry, p. 394)