XLIII 



CUPRESSINEAE 



147 



than 2 seeds on each cone-scale of Cupressus. The leaves are whorled, in 

 4 ranks, and appressed to the axis (fig. 699). The young foliage of Cupressus, 

 Thuya, and other genera (fig. 700), which in the adult state has the form of 

 scale-leaves, consists of spreading linear leaves: individuals in which this 

 juvenile foliage persists are often spoken of as species of the 'genus ' Retinospora. 

 Cones oblong or globular, composed of a few pairs of scales with peltate distal 

 ends either smooth or provided with a prominent umbo (fig. 699). 



FIG. 699. Cupressus Macnabiana. (From Rendle and the Gardeners' Chronicle.) 



Thuya. Very similar to Cupressus in the habit of its bi- or tri-pinnate 

 shoots. The cones of 810 decussate scales are distinguished from those of 

 Cupressus by their elongated, oblong, form and by the upwardly directed 

 scales with thickened apices in contrast to the more horizontal and peltate 

 scales of Cupressus: there are 2 seeds to each scale, winged (sect. Euthuja) 

 or wingless (sect. Biota). 



Libocedrus. Foliage shoots often broader than in Thuya; in L. decurrens 

 the appressed, flat, leaves- are characterised by a long decurrent portion and 



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