38 MASS. EXPERIMENT STATION BULLETIN 345 



in comparison to the semi-evergreen L. ovalifolium. This extra hardiness is 

 apparent in the manner in which the plant hardens its wood, drops its leaves, 

 and settles down for the winter. For tall clipped or natural hedges. 



X LIGUSTRUM IBOLIUM 



A supposed hybrid between the tender L. ovalifolium and the rugged L. 

 obtusi folium, resulting in a hardier hedge plant which retains most of the 

 glossy, broad-leaved character of the ordinary "California Privet." Not at 

 all evergreen, it seems to have justly displaced the less hardy L. ovalifolium in 

 New England gardening. 



LIGUSTRUM OBTUSIFOLIUM var. REGELIANUM Reqel Privet 

 A truly deciduous Privet which is to be looked upon not as a hedge plant 

 but as a low shrub with almost level, spreading branches covered in winter 

 with masses of attractive black fruits which follow the nodding panicles of 

 white flowers of late spring. Valuable for general mixed plantings. It can, 

 with sacrifice of fruit, be used for clipped hedges or, by severe annual cutting, 

 for bank covering. 



Lilac — See Syringa 



Linden — See Tilia 



Lindera aestivale (Benzoin aestivale) Spicebush 



Tall, gaunt, long-lived, deciduous shrub for natural planting in moist, half- 

 shaded soil at edges of woods. It has bright yellow flowers in early spring 

 before the leaves; and in autumn, yellow foliage coloration accompanied by 

 small crimson berries which are much enjoyed by birds. 



Linnaea borealis var. americana AMERICAN TwiNFLOWER 



A creeping, prostrate, evergreen shrub which has small, rounded leaves; 

 small, fragrant, white or pink flowers; and tiny yellow fruits. Difficult to 

 cultivate except in shady, moist, peaty soil in woodland or rock garden. 



LIQUIDAMBAR STYRACIFLUA SWEET GuM 



In the North this tall inhabitant of southern swamps settles down on 

 reasonably deep, moist soil to be a fifty-foot, pyramidal tree of considerable 

 distinction. Its star-shaped leaves, brilliant autumn color, gray bark, corky- 

 ridged branches, and decorative brown fruits tend to give it seasonal interest. 

 It has proved difficult to transplant in larger sizes. 



I iri.. t U-iulri.ii Tulipifera TlJLIP TREE 



A familiar, tall, clean-boled, woodland tree with broad-lobed leaves and 

 tulip-like flowers. The var. PYRAMIDALE is particularly valuable to 

 gardening because of its upright branching habit which builds up a tall, narrow 

 outline. A superior substitute for the discredited Lombardy Poplar, but 

 difficult to transplant in large sizes. 



LITHOSPERMUM DIFFUSUM 



The tender, gray-leaved, lime-loving prostrate shrub with blue flowers 

 which, though desirable when happy, has been found difficult of culture in 

 many eastern rock gardens. 



Locust — See Robinia 



LOISELEURIA PROCUMBENS ALPINE-AzALEA 



A tiny, multiple-branched, tufted, evergreen shrub which inhabits high 

 mountain regions in New England. When suited, it forms mats covered with 



