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3^ 



CEDRUS 



Cedrus, Lawson, Agric. Man. 379 (1836); Loudon, Arb. et Frut. Brit. iv. 2402 (1838); Benthatn 



et Hooker, Gen. PL iii. 439 (1880); Masters, /o/-. Linn. Soc. {Bot.) xxx. 30 (1893). 

 Larix, Miller, Diet. No. 3 (1724) (ex parte). 

 Pinus, Linnaeus, Sp. PI. 1001 (1753) {ex parte). 

 Pinus, section Cedrus, Parlatore in DC. Prod. xvi. 2, p. 407 (1864). 

 Abies, Poiret in Lamarck, Diet. vi. 510 (1804) (ex parte). 



Trees belonging to the tribe Abietineae of the order Coniferae, with evergreen foliage,' 

 borne, for the most part, in tufted flat masses on the ramifications of the branches, 

 which arise irregularly and not in whorls from the stem. Bark dark grey and 

 smooth on young stems and branches ; ultimately on old trunks thick and Assuring 

 into irregular longitudinal plates, roughened externally by small scales. 



Branchlets of two kinds : long shoots bearing in spiral order solitary leaves, and 

 short shoots or spurs with leaves in pseudo-verticels. Buds minute ovoid, with a 

 few brown scales, which persist after the opening of the bud, either sheathing the 

 base of the long shoots or surrounding the annual rings of the short shoots. Long 

 shoot with a solitary terminal bud, prolonging the growth of the branchlet in the 

 following year ; and with a few lateral buds solitary in the axils of some of the leaves 

 and usually developing into short shoots. Short shoot with a terminal bud only, 

 which, in the following year, either lengthens slightly the spur and adds to it a whorl 

 of leaves with or without flowers, or occasionally develops into a long shoot. Long 

 shoots, slightly furrowed, between the slightly raised decurrent bases of the pulvini, 

 the free ends of which project and bear leaves, and on older branchlets, from which 

 the leaves have fallen, remain persistent as slight prominences. 



Leaves, deciduous in the third to the sixth year, variable in length, the shortest 

 on the spurs, articulated at the base, acicular, rigid, sharply pointed, more or less 

 triangular in section, stomatic on all sides; fibro-vascular bundle undivided, hypo- 

 derm thick, with two resin canals close to the epidermis on the lower surface. 



Flowers, monoecious, terminal, solitary on the older leaf-bearing short shoots. 

 Male flowers, erect, catkin-like, cylindrical, about 2 inches long ; anthers numerous, 

 spirally crowded, bi-locular, dehiscing longitudinally ; connective prolonged into an 

 ovate denticulate crest ; pollen grains globose, without wings, borne to the female 

 flowers by the wind. Female flowers appearing as small purplish cones, about \ inch 

 in length ; composed of numerous spirally arranged, closely appressed, irregularly 

 dentate, sub-orbicular scales, each subtended by a short, included, obovate, denticulate 

 bract ; ovules, two on each scale, inverted. 



in 451 ^ 



