FOREST TREES. 



239 



one ( U. m. glabra), also another known as the Exeter Elm {U, m. 

 fastigiata), noted for its peculiar fastigiate growth and twisted 

 leaves. There are also, in addition to the varieties named, at 

 least a score of others of similar origin, described in nursery- 

 men's catalogues, all desirable for ornamental purposes. 



UMBELLULARiA, Nutt. — Spine Tree. 



A genus closely allied to the Sassafras Tree of our Eastern 

 States, but found only on our West Coast. Flowers yellowish- 

 green ; perfect in pedunculate umbels, which are enclosed be- 

 fore expansion in a four-bracted involucre. A tree with thick, 

 fragrant, evergreen leaves. Only one species. 



Umbellnlaria Caiifornica, Nutt. — Spice Tree, Mountain Laurel. — 

 Leaves green and shining, lanceolate-oblong, acute at each end, 

 or sometimes rounded at base, two to four inches long, short 

 petioled. Fruit an ovate- 

 elliptical or globose drupe, 

 nearly an inch long, dark 

 purple, with thin pulp and 

 stone. The foliage is ex- 

 ceedingly acrid, exhaling a 

 pungent odor, which excites 

 sneezing. This tree is also 

 known as the California 

 Olive, California Laurel, Ca- 

 jeput, etc., etc. The fruit 

 is very persistent, remainiug 

 on the trees all winter. A 

 small tree in the Coast 

 Ranges of California, but 

 extending northward to 

 Oregon, where it grows to a ^. 



, . « T Fig. 49.— SPANISH BUCKEYE. 



hight of nearly or quite one * 



hundred feet, and a stem two to four feet in diameter. Wood 

 of a brownish color, close-grained, handsome and valuable, 

 much used for cabinet work and wainscoting. 



UKGKADiA, Endl. — Spanish BncTceye. 



A genus of only a single species, but closely related to the 

 Horse-chestnuts or Buckeyes. It is quite remarkable for having 

 the foliage of a Hickory, and flowers and fruit resembling 

 those of the Buckeye. 



Ungnadia speciosa^ Endl. — Spanish Buckeye, — Leaves composed 



