656 



The Maples 



21. KING'S ASH-LEAVED MAPLE— Acer Kingii Britton, new species 



This tree inhabits the Wahsatch Mountains of Utah. It is apparently nearest 

 related to the next preceding species, having similar foliage, and the united part 

 of the samaras is not constricted at the base, but the samara-wings are adnate to 

 the seed-bearing parts down to the point at which these are united. 



Fig. 609. — King's Ash-leaved Maple. 



The only specimens known to us were collected in the Wahsatch Moimtains at 

 about 2000 meters altitude, by Dr. Sereno Watson, during Mr. Clarence King's 

 Geological Exploration of the Fortieth Parallel, August, 1869 (No. 216); here the 

 trees are stated to be abundant. The specimens have finely velvety twigs, the leaves 

 with 3 leaflets, which are pointed and coarsely toothed, and very long racemes. 

 The long fihform pedicels of the fruit are somewhat hairy and the samaras are 

 about 3*5 cm. long, Uttle divergent, the wings curved on the back and i cm. wide 

 or less. 



