XLni] CUPRESSINEAB 149 



differ widely from the broader, flat and sharply pointed leaves of J. drupaeea. 

 There is a resin-canal near the lower surface^ or, in some species, e.g., J. oxy- 

 cedrus, there may be no canal. The more or less globular or elongated fleshy 

 strobUus consists of 1 — i' whorls of megaspofophyUs. 



Fitzroya and Disdma. In some examples of F. patagonica the leaves are 

 short and crowded and shghtly falcate, in others more spreading ; while in 

 Diselma Archeri^ the shoots resemble those of some Lyoopodiums. The 

 leaves are in alternate ternary whorls and there is a single canal below the 

 vein. The cones consist of 3 alternate trimerous whorls and the fertile scales 

 bear a variable number of winged ovules. Thujopsis. Shoots similar to 

 those of Thuya but the decussate leaves are rather larger^. Cones narrow, 

 consisting of 8 clavate scales with 5 small winged seeds on each scale. 



Taxodium. The slender deciduous shoots, 8 — 10 cm. long, bear 2-ranked 

 linear leaves 2 cm. long, acute and lanceolate, also small leaves 10 — 17 mm. 

 long and barely 1 mm. broad. Circular depressed branch-scars are a charac- 

 teristic feature of the leafless shoots. Globular cones" composed of a few 

 peltate scales with an irregular crenulate upper margin (fig. 686, D — r) each 

 scale bearing 2 shghtly winged seeds. The almost leafless spikes of micro- 

 strobiU are a noteworthy feature. The wood of Taxodium closely resembles 

 that of Sequoia sempervirens : the thicker horizontal walls of the xylem- 

 parenchyma are quoted by Gothan as a characteristic feature* of Taxodium. 

 Lingelsheim* says that this distinction is not vaUd; he states that simple pits 

 occur in the cross-waUs of the xylem-parenchyma of Taxodium but not in the 

 cells of Sequoia. Pits are, however, present in the parenchyma of both these 

 genera. Olyptostrobus. Similar in habit to Taxodium, but the leaves are not 

 2-ranked'; the cones are more pyriform; the seeds are smooth and narrow 

 with lateral wings. The comparatively large circular pits on' the radial walls 

 of the ray cells are characteristic^. 



Cryptomeria. FoHage-shoots (fig. 677) as in Araucaria excelsa: a large 

 resin-canal occurs below the midrib of the laterally compressed leaves (fig. 694, 

 E). The cones have 20 — 30 peltate scales characterised by the deeply cleft 

 comb-hke upper portion (fig. 684, M). The xylem-parenchyma is said by 

 Fujioka to be confined to the region between the spring and summer wood : 

 the pits in the field are variable in position and the breadth of the pore may be 

 vertical or obhque. 



Cunninghamia. Leaves densely spiral and spreading, narrow, lanceolate, 

 acuminate and serrate, 2-5 — 5 cm. long, with a narrow decurrent base: a large 

 canal below the midrib. Cones ovoid-globular, 4 cm. long, composed of 

 broad thin scales with a serrate edge and a fimbriate membrane on the abaxial 



1 Kirchner, Loew, and Schroter (06) pp. 293, 314. 



2 Hooker, J. D. (60) PI. xovni. ^ Fujioka (13). 

 * Gard. Chron. Nov. 25, 1893, p. 657. 



5 Gothan (06); (09). « Lingelsheim (08). 



' Masters (00). « Kleeberg (85). 



