Or to take the small but welldefined group of five-leaved pines, all the species of which may be seen growing side by side at Kew under identical conditions: we have the Weymouth pine (Pinus Strobus) in eastern North America, P. monlicola and the sugar pine (P. Lambertiana) in California, P. Ayacahwite in Mexico, the Arolla pine (P. Cembra) in Switzerland and Siberia, P. Peuce in Greece, the Bhotan pine (P. excelsa) in the Himalayas, and two other species in Japan.
The silver fir (Abies sibirica, Pinus pectinata) and the stone-pine (P. Cembra) are quite common; they reach the higher summits, where the last-named is represented by a recumbent species (Cembra pumila).
Pinus cembra " is only remembered, as also Taxus baccata.
The Ayan spruce (Abies ayanensis), the Sakhalin fir (Abies sachalensis) and the Daurian larch are the chief trees; on the upper parts of the mountains are the Siberian rampant cedar (Cembra pumila) and the Kurilian bamboo (Arundinaria kurilense).
P. Cembra is the stone pine of Siberia and central Europe.