338 DICOTYLEDONOUS PLANTS. 



in four rows, ovate, submucronate, glandular in the middle, appressed; 

 berries large and conspicuously tubercular. J. repens Nutt. 



HAB. Sandy soils. Can. and N. S. W. to Miss. May. >>. 

 A low shrub, with long and creeping branches, 2 yards long. 



2. THUYA. Linn. 



Monoecious. STERILE FL. Ament imbricate. Perianth 

 none. Anthers 4, sessile. FERTILE FL. Strobile with the 

 scales 2-flowered. Nut 1, winged. 



Monoecia. Monadelphia. 



T. occidentals Linn. . branches ancipitous ; leaves imbricated in 4 

 rows, ovate-rhomboidal, appressed, tuberculate ; strobiles obovate ; in- 

 ner scales truncate, gibbous below the summit. 



HAB. Mountains. Can. to Car. May. *>. A small tree, with 

 very tough branches. Leaves resembling scales. 



American Arbor Vita. 



3. CUPRESSUS. Linn. 



Monoecious. STERILE FL. Ament ovate ; scales peltate. 

 Perianth none. Anthers 4, sessile. FERTILE FL. Stro- 

 bile with the scales peltate. Perianth none. Ovaries 4 8, 

 under each scale of the strobile. Nuts angular, compressed. 



Monoecia. Monade/phia. 



1. C. disticha Linn. : leaves distichous, flat, deciduous ; sterile flow- 

 ers leafless, paniculate ; strobile subglobose. 



HAB. Swamps. N. J. to Flor. W. to Miss. May. *?. One 

 of the largest trees of the forest, occurring in extensive swamps, 

 especially at the South. Leaves small, linear and acute. Cone 

 with an irregular surface. Timber very durable. * Cypress. 



2. C. thyoidcs Linn. : branches compressed ; leaves imbricate in four 

 rows, ovate, tuberculate at base ; strobile globose. 



HAB. Swamps. N. Y. to Car. May. T?. A middle-sized tree, 

 composing the cedar sicamps of the Middle and Southern States. 

 Wood light, soft and durable. While, Cedar. 



4. PINUS. Linn. 



Monoecious. STF.RILE FL. Scales peltate. Perianth 

 none. Anthers 2, sessile, 1-celled. FERTILE FL. in an ovate 

 or conical strobile. Scales closely imbricate, 2-flowered. 

 Nut winged, covered by the scales of the cone. 



Monoecia. Monadelphia. 



* Leaves 2 5, sheathing at base* Scales of the cone thickened at the. 

 summit. PIN us. 



1. P. inops Ait. : leaves short, in pairs ; strobile recurved, oblong- 

 conic, as long as the leaves; spines of the scales subulate, straight. 



