American larch Antarctic flora brush brush-wood brushwood bush cushion decay flower forest grass green grow grown moss moss cushion natural nature Non-vascular land plant plant shortstraw pine soft summer Terrestrial plant tiny underbrush vascular plant wood woods background color colored colors colour coloured colours compacted cushion-like firm flora foliage garden garden-grouncover garden-plants greenery groundcover growth leaf leaves light lines low low-plants mossy surface tangle tangled texture textures unusual vegetation