PiNACEAE 



113 



pedunculate clusters; ovulate cones pendulous, terminal; cone scales woody, persistent, concave, the subtending bracts rarely 

 exserted; seeds small, winged; cotyledons 3-6. About 10 species in e. Asia, die Himalayas, and N. America. 



lA. Bark brown, deeply fissured; branchlets glabrous; buds acutish 1. T. sieboldii 



IB. Bark grayish, slightly fissured; branchlets short-pubescent; buds obtuse 2. T. diversijolia 



1. Tsuga sieboldii Carr. Abies tstiga Sieb. & Zucc; T. 



thuja A. Murr.; Pintts tsuga (Sieb. & Zucc.) Ant. Tsuga, 



Toga. Tree with ciliate bud-scales; branchlets glabrous, 

 lustrous, yellowish brown; leaves rather loosely arranged, 

 linear, 8-20 mm. long, emarginate, lustrous and 1-grooved 

 above, with 2 radier narrow whitish stomatal bands beneath; 

 cones broadly ovoid, 2-2.5 cm. long, short-stalked, the scales 

 orbicular, 1 cm. long, ciliolate, glabrous on back. Moun- 

 tains and hills; Honshu (Kanto Distr. and wesrw.), Shikoku, 

 Kyushu; common. 



2. Tsuga diversifolia (Maxim.) Mast. Abies diversi- 



jolia Maxim.; Pinus tsuga var. nana Endl.; T. sieboldii var. 



nana (Endl.) Carr. Kome-tsuga. Tree; buds obovoid- 



globose to globose, with minutely pubescent and ciUate scales; 

 branchlets short-pubescent; leaves rather densely arranged, 

 linear to broadly so, 5-15 mm. long, emarginate, deep green, 

 1-grooved above, with 2 rather narrow whitish stomatal bands 

 beneath; cones broadly ovoid, about 2 cm. long, subsessile, the 

 scales cuneate-orbicular, puberulent. High mountains; Hon- 

 shu (centr. distr., northw., and Yamato), Shikoku, Kyushu; 

 rather common. 



4. PICEA A. Dietr. To-hi Zoku 



Evergreen, monoecious trees; branches with prominent pulvini separated by grooves; leaves spirally arranged, linear to 

 acicular, 4-angled with stomatal bands on all faces or compressed and with stomata only on the inner (upper) side; staminate 

 aments axillary, with numerous spirally arranged anthers; ovulate aments terminal, of numerous spirally arranged 2-ovuled 

 scales; cones usually pendulous, ovoid to short cylindric, the scales persistent, the subtending bracts small; seeds small, winged. 

 About 40 species in the N. Hemiphere. 



lA. Leaves dorsally flattened, linear-rhomboid in cross section, with stomatal bands on under side; branchlets glabrous and lustrous; 



winter buds broadened at base, broadly conical, resinous and lustrous \. P. jrxoensts 



IB. Leaves 4-angled or only slightly flattened dorsally, usually with stomatal bands on all sides. 

 2A. Leaves slightly compressed dorsally, broader than thick and rhomboid in cross section. 



3A. Branchlets glabrous, or with short grayish pubescence on main axis; winter buds dull to chestnut-brown, not broadened at base; 



cones ovoid-cylindric, 6-12 cm. long 2. P. bicolor 



3B. Branchelets densely pubescent with short rusty-brown hairs; winter buds conical to ovoid, broadened at base, lustrous, chestnut- 

 brown, resinous; cones cylindric, 5-8 cm. long 3. P. gUhnii 



23. Leaves 4-angled, as broad as thick or a litde narrower. 

 4A. Branchlets glabrous. 



5A. Winter buds ovoid, chestnut-brown, not or slighdy resinous; leaves 15-20 mm. long; cones 8-10 cm. long 4. P. polita 



5B. Winter buds conical, reddish brown, conspicuously resinous; leaves 8-15 mm. long; cones 3-6 cm. long. ... 5. P. maximowiczii 



4B. Branchlets usually glandular-pubescent, glabrescent or nearly so; winter buds conical, broadened at base, brown, lustrous, resinous; 



leaves 8-12 mm. long; cones 4-10 cm. long 6. P. kpyamae 



1. Picea jezoensis (Sieb. & Zucc.) Carr. Abies jezoensis cones narrowly ovoid, 6-12 cm. long, the scales obovate, 



Sieb. & Zucc; P. ajanensis auct. Japon., non Fisch.; A. alco- rounded or slighdy narrowed at apex, obscurely toothed. 



quiana Veitch ex Lindl. pro parte; Pinus jezoensis (Sieb. & Mountains; Honshu (centr. distr.). 



Zucc.) Ant.; A. microsperma Lindl.; A. microcarpa Lindl. Var. acicularis Shiras. & Koyama Hime-matsu-hada. 



apud Miq. err. typogr.; Picea microsperma (Lindl.) Carr. Branchlets minutely pubescent; leaves recurved; cone-scales 



Ezo-matsu, Kuro-Ezo. Tree; branchlets glabrous and lustrous, subentire. Honshu (Yatsugatake in Shinano) ; rare. 



yellowish brown or yellowish, with slightly swollen pulvini; Var. reflexa Shiras. & Koyama Shirane-m.\tsu-hada. 



leaves compressed, 1-2 cm. long, 1.5-2 mm. wide, acute, mu- Branchlets minutely pubescent; leaves shorter; cone-scales 



cronate, somewhat keeled on both sides, slighdy recurved, lus- smaller, entire widi slighdy elongate reflexed tip. Honshu 



trous on external (upper) side, with 2 stomatal bands on inner (Akaishi mountain range) ; rare. 



(under) side; cones short-cylindric, 4-7.5 cm. long, the scales 3. Picea glehnii (F. Schmidt) Mast. Abies glehnii F. 



oblong, denticulate on upper margin; seeds about 3 mm. long, Schmidt Aka-Ezo-matso. Tree; branchlets densely pu- 



the wing 2-2.5 times as long as the seed. Hokkaido s. bescent with reddish brown short hairs; leaves compressed, 



Kuriles and Sakhalin. 4-angled, acicular, 6-12 mm. long, 1.2-1.5 mm. wide, obtuse or 



Var. hondoensis (Mayr) Rehd. P. hondoensis Mayr slightly pointed, dark green, slightly recurved; cones cylindric, 



T6-HI. Branchlets usually reddish brown, the pulvini much 5-8 cm. long, dark purplish, the scales suborbicular, entire or 



swollen; leaves a litde shorter, acutish to obtuse, the terminal slighdy denticulate. Bogs; Hokkaido, Honshu (Mt. Haya- 



mucro almost entirely wanting. High mountains; Honshu chine in Rikuchu). Sakhalin. Forma chlorocarpa Mi- 



(centr. distr. and Yamato). yabe & Kudo. Aomi-no-aka-Ezo-matsu. Cones green to green- 



2. Picea bicolor (Ma-xim.) Mayr. Abies bicolor Maxim.; ish yellow. 



.'/. alcoquiana Veitch ex Lindl. pro parte; P. alcockjana Carr. 4. Picea polita (Sieb. & Zucc.) Carr. Abies polita Sieb. 



Ira-momi, Matsu-hada. Tree; branchlets lustrous, red- & Zucc; P. torano (Sieb.) Koehne; P. thunbergii Asch. & 



dish brown, glabrous but short-pubescent on main axis; leaves Graebn. Hari-momi, Bara-momi. Tree with thickish, 



slighdy compressed, 1-2 cm. long, 1-1.3 mm. wide, acuminate; glabrous, pale yellow or pale reddish brown branchlets; leaves 



