It is a sad indication of the state of education these days when students are not grounded in the fundamentals of Monty Python.
Season 1, episode 3 from 1969: How to Recognise Different Types of Trees From Quite a Long Way Away.
And what a great episode this is too, not only the Larch but Cardinal Richelieu, Superman's alter-ego Bicycle Repair man and nudge, nudge, wink, wink.
The larch re-appears in the closing sequence although I do feel compelled to point out that doesn't look like a larch trunk, I think its a birch - almost all the other trees around it are clearly silver birch. And look at all those wonderful ferns. Just look at them!