116 Taxodiaceae; Cupressaceae 



2. CRYPTOMERIA D. Don Sugi Zoku 



Evergreen monoecious tree; leaves spirally arranged in 5 rows, decurrent, linear-subulate, ascending and slightly incurved, 

 slighdy flattened laterally, anterio-posteriorly keeled, acuminate, stomatal bands on both sides; stamina te aments oblong, 

 sessile, axillary, aggregated in spikelike clusters on branchlets; stamens numerous, with 4- to 5-locular anthers; ovulate aments 

 solitary, terminal; cones globose, woody, the scales 20-30, 2- to 5-seeded, cuneate, thickened distally, the umbo with a central 



spine and a few flattened toothlike spines on margin; seeds narrowly winged; cotyledons 2 or 3. One species in Japan and 



China. 



1. Cryptomeria japonica (L. f.) D. Don. Cupressus current; cones 15-25 mm. across; seeds 5-6 mm. long. 



japonica L. f.; Taxodium japonicum (L. f.) Brongn. Sugi. Mountains and hills; Honshu, Shikoku, Kyushu; rarely spon- 



Glabrous tree with reddish brown shredding bark; leaves deep taneous; extensively planted in timber plantations, parks and 



green, 3-20 mm. long, acuminate, broadened at base and de- gardens; several cultivars are grown. China (variety). 



Fam. 31. CUPRESSACEAE HinokiKa Cypress Family 



Evergreen branched shrubs and trees; leaves decussate or verticillate in 3's, scaly or sometimes subulate; stamens and cones 

 axillary or terminal on branchlets, the scales of both sexes opposite or verticillate in 3's; staminate aments with 3- to 5-locular 

 anthers; ovulate aments with 1 to many-ovulate scales; cones woody and dehiscent or berrylike and indehiscent; seeds some- 

 times wing-margined; cotyledons 2, rarely 5 or 6. About 15 genera and 150 species of wide distribution. 



lA. Leaves opposite; cones woody and dehiscent. 

 2A. Cones ovoid to narrowly so, the scales flattened and imbricate. 



3A. Branchlets less than 5 mm. wide, deep green, sometimes white-spotted on lower side; cone-scales 4-6 pairs, the two fertile pairs 



each with 1 pair of seeds 1 . Thuja 



3B. Branchlets 5-6 mm. wide, conspicuously white-spotted on lower side; cone-scalcs 3 or 4 pairs, 3- to 5-seeded 2. Thujopsis 



2B. Cones globose, the scales peltate 3. Chamaecyparis 



IB. Leaves opposite or ternate; cones berrylike, indehiscent, 1—12 seeded, composed of 2-6 fleshy connate scales 4. Juniperus 



1. THUJA L. KuROBE Zoku 



Evergreen monoecious trees; branchlets horizontally or vertically flattened; leaves scalelike, opposite and decussate, the lateral 

 almost covering the facial ones; staminate aments ovate, with 6-12 decussately arranged stamens; cones ovoid or oblong, die 

 4-6 pairs of scales ridged or mucronate at apex, only 2 (3) pairs fertile, each 2- (3-) seeded; seeds sometimes broadly winged; 

 cotyledons 2. About 6 species in e. Asia and N. America. 



lA. Branches and branchlets horizontally flattened; cone-scales thin and woody; seeds winged 1. T. standishii 



IB. Branches and branchlets vertically flattened; cone-scales thick, rather fleshy while young; seeds wingless 2. T. orienfalis 



1. Thuja standishii (Gord.) Carr. T. japonica Maxim.; 2. Thuja orientalis L. Biota orientalis (L.) Endl. 



T. gigantea var. japonica Fr. & Sav.; Thujopsis standishii Ko-No-TECASHrwA. Evergreen shrub to small tree often 

 Gord. ^KuROBE, Nezu-ko. Glabrous evergreen tree; branch- branched nearly to base; branchlets slender, vertically flat- 

 lets horizontally flattened, thickish, 1.5-2.5 mm. wide; leaves tened, 1.5-2 mm. wide; leaves deep green, deltoid-ovate, small, 

 deep green, scalelike, deltoid, obtuse, eglandular; cones obo- with a sessile gland on back, subacute on the branches, acute 

 void, 8-10 mm. long, the scales 6-8, broadly elliptic to cuneate; on main axis; cones ovoid, 15-25 mm. long, the scales fleshy, 

 seeds 3 on each scale, oblanceolate, 5-6 mm. long, the oblong ovate, obtuse, with a recurved mucro on back below apex; 



wing 6-7 mm. long, 2-2.5 mm. wide. Mountains; Honshu, seeds 2 on each scale, ellipsoidal, wingless. Frequently culti- 



Shikoku; rarely cultivated. vated in Japan. ^Korea and China. 



2, THUJOPSIS Sieb. & Zucc. Asunaro Zoku 



Evergreen monoecious tree; branches horizontally flattened; leaves opposite and decussate, scalelike, small; staminate aments 

 cylindric, with 6-10 pairs of stamens; ovulate cones woody, globose-ovoid, the scales 6-8, imbricate, usually mucronate below 

 apex, with 3-5 seeds on each scale; seeds winged; cotyledons 2. One species in Japan. 



1. Thujopsis dolabrata (L. f.) Sieb. & Zucc. Thuja thickish wing. ^Mountains; Honshu (centr. distr. northw.), 



dolobrata L. f.; Platycladus dolabrata (L. f.) Spach; Thujopsis Shikoku, Kyushu; often planted. 



dolabrata var. australis Henry Asunaro. Tree with pendu- Var. hondae Makino. T. hondae (Makino) Henry 



lous lateral branches, the branchlets 4-6 mm. wide; leaves Hinoki-asunaro. Branchlets more dense; cones larger and 



lustrous, deep green above, with a conspicuous white area globose; scales without a prominent mucro. Hokkaido, 



beneath, the lateral ones obtuse, ascending, flat and semiovate, Honshu (n. distr.). 



4-6 mm. long, the median appressed, broadly obovate; cones Cv. Nana. Thujopsis dolabrata var. nana Carr.; T. laete- 



1-1.6 cm. long, dehiscent, the scales 6-10 mm. long, broadly virens Lindl.; T. dolabrata var. laetevirens Lindl. Mast. 



cuneate, with a deltoid, obtuse, spreading mucro below tiie Hime-asunaro. With slender branches and smaller leaves, 



apex; seeds elliptic, 4-5 mm. long, 3-3.5 mm. wide, with a A dwarf cultivar of gardens. 



