The books are magnificent. The brief species desciptions with a focus on diagnostic characters are very informative and the excellent photos are a treat!
Abies fraseri cones
This fir usually has small (less than 6 cm long) but very attractive cones with the dark blue-gray cone having relatively large, long-exserted, broad-winged, showy bracts. This example is from Benmore Botanic Garden, R.B.G. Edinburgh.