PINUS 141 



authority for this alleged dwarf form of P. Cembra, but in 

 an old catalogue of the Lawson Nursery dated 1875, a 

 P. Cembra nana (a synonym of P. pumila), and a P. Cembra ^ 

 var. pygmma, are both offered for sale. 



P. Strobus, L. 



The white or Weymouth pine was introduced from 

 Eastern North America in 1705, where it reaches 150 feet 

 in height, and in vars. umbraculifera and prostrata it has 

 supphed us with two of the best dwarf pines in cultivation. 



There is a considerable amount of confusion about 

 some of the varieties of P. Strobus. Carriere (" Conif.," 

 302, 1855) makes his var. nana synonymous with vars. 

 brevifolia (Loud.) and compressa, and describes var. nana 

 as a '' bushy pyramidal shrub, leaves slightly shorter than 

 the type, not a very distinct variety." 



Gordon, writing about the same date, and describing 

 var. brevifolia, Loud., which he makes synonymous with 

 var. compressa, Loddiges, says its leaves are "much 

 shorter and slenderer and growing closely compressed 

 round the shoots — a singular-looking variety." 



Beissner, in 1891, makes var. nana sjmonymous with 

 vars. brevifolia, Loud., compressa, and pygmcea, and 

 describes it as a " bushy roundish, stunted, globular 

 dwarf form with shorter leaves and crowded branchlets." 



It would appear from these descriptions that neither 

 of the forms described by Carriere and Beissner as var. 

 nana are identical with var. brevifolia. Loud., nor do they 

 appear to be identical with one another. 



P. Strobus, var. brevifolia, Loud. ("Encyl. of Trees," 

 1018; 1842). 



Seems to be no longer in cultivation. I have occasion- 

 ally received plants under this name from nurserymen, but 

 I have invariably found them to be forms of P. parviflora, 



P. Strobus, var. nana, Carr. ("Conif.," 34, 1855). 



Seems also to have disappeared, and judging from his 

 description, it was not distinct enough to be missed. 



