Gramineae 



189 



geminate, ascending or obliquely spreading, lanceolate, 5-7 

 mm. long, acuminate, yellowish, awned, with a tuft of white 

 or purplish hairs 7-12 mm. long, pedicellate; glumes rather 

 coriaceous, acuminate, with hyaline apex and margins; awn 

 of fertile lemma 8-15 mm. long. Aug.-Oct. Slopes in low- 

 lands and mountains; Hokkaido, Honshu, Shikoku, Kyushu; 



common and variable. s. Kuriles, Korea, China, Ryukyus, 



and Formosa. Cv. Cracillimus. M. sinensis var. gracilli- 



mtis Hitchc. Ito-susuki. A narrow-leaved cultivated 



phase. Cv. Zebrinus. M. sinensis forma zebrinus 



(Nichols.) Nakai; Eulalia japonica zebrina Nichols.; M. 



sinensis var. zebrinus (Nichols.) Beal Takanoha-susuki. 



Cultivated phase with narrow, very scabrous, intermittent 

 transverse whitish bands across the leaf blades. 



Var. condensatus (Hack.) Makino. M. condensatus 



Hack.; M. hida\amis Honda Hachijo-susuki. Stouter; 



leaf-blades 1.5-4 cm. wide, glaucous beneath, less scabrous, 

 panicles much denser. Near seashores, sometimes in moun- 

 tains; Hokkaido, Honshu, Shikoku, Kyushu; rather common. 

 Korea, China, Indochina, and the Pacific Islands. 



4. Miscanthus oligostachyus Stapf. M. matsumnrae 



Hack. Kari-yasu-modoki. Tufted perennial; culms 60- 



80 cm. long, with pilose nodes; leaf-blades flat, linear to 

 broadly so, 20-40 cm. long, 8-12 mm. wide, scabrous on mar- 

 gins, sparsely long-pilose especially beneath; ligules semi- 

 rounded, obtuse, glabrous, membranous, 2-3 mm. long; 

 sheaths rather short, glabrous, striate; panicles corymbose, the 

 axis very short; racemes 2-5, erect, 7-12 cm. long, green or 

 purplish; spikelets erect, lanceolate, 7-8 mm. long, acuminate, 

 sparsely long-hairy; callus with a tuft of hairs 3-5 mm. long; 

 glumes herbaceous, acuminate, scabrous; awn of fertile lemma 



about 15 mm. long. Aug.-Oct. Mountains; Honshu, Shi- 

 koku, Kyushu. 



5. Miscanthus intermedius (Honda) Honda. M. longi- 

 berbis var. intermedius Honda; M. tinctorius var. intermedius 

 (Honda) Ohwi O-higenaca-kari-yasu-modoki. Rhi- 

 zomes short; culms tufted, 120-180 cm. long, rather stout; 

 leaf-blades flat, narrowly to broadly lanceolate, 40-60 cm. long, 

 1-2 cm. wide, long-acuminate, glaucescent beneath, sparsely 

 pilose, rounded at base; ligules truncate, brownish, 1-2 mm. 

 long; sheaths smooth, short-pubescent above; corymbs ex- 

 serted, with a very short axis; racemes 6-10, erect, 10-15 cm. 

 long; spikelets erect to ascending, 7-8 mm. long, acuminate, 

 with a tuft of hairs 5-7 mm. long at base; first glume grad- 

 ually narrowed, 2-costate at dp, sparsely white-pilose; awn of 



fertile lemma imperfect, slightly exserted, 5-8 mm. long. 



Aug.-Sept. Mountains; Honshu (Japan Sea side of centr. 

 and n. distr.). 



6. Miscanthus tinctorius (Steud.) Hack. M. sieboldii 

 Honda; Saccharum tinctorium Steud.; Imperata tinctoria 



(Steud.) Miq. Kari-yasu. Tufted perennial; culms 80- 



100 cm. long; leaf-blades flat, broadly linear, 20-40 cm. long, 

 8-12 mm. wide, glabrous, scabrous on margins, pilose on both 

 sides near base, midrib rather slender; ligules semirounded or 

 truncate, 2-3 mm. long; sheaths sometimes sparsely pilose; 

 corymbs exserted, erect, with a very short axis; racemes 2-12, 

 10-15 cm. long; spikelets 5-6 mm. long, acute, with a tuft of 

 hairs at base about half as long as the spikelet, awnless; glumes 

 rather coriaceous, brownish, acute, long-pilose, the first bi- 

 dentate, scabrous on the 2 ribs above. Aug.-Oct. Moun- 

 tains; Honshu (centr. distr.). 



86. SPODIOPOGON Trin. O-abura-susuki Zoku 



Rather coarse perennials; leaf-blades linear to narrowly lanceolate; racemes 1-3, peduncled; rachis articulate at nodes; spikelets 

 geminate, ovate, terete, the first pedicelled, deciduous from apex of the pedicel, the second nearly sessile, deciduous with the 

 joint and pedicel; glumes coriaceous, nerved, acute, the first scarcely keeled, the second nearly as long; sterile lemma hyaline, 

 paleate and staminate; fertile lemma hyaline; stamens 3. More than a dozen species, widespread in temperate regions. 



lA. I-eaf-blades linear, 25-40 cm. long, pilose to glabrous; rachis with 3 to 5 joints and 7 to 11 spikelets \. S. sibiriciis 



IB. Leaf -blades lanceolate to linear-lanceolate, less than 20 cm. long, thinly membranous, glabrous except at the mouth; rachis with 1 or 2 

 joints and 3 to 5 spikelets 2. 5. depaiipcratiis 



1. Spodiopogon sibiricus Trin. Andropogon sibiricus 

 (Trin.) Steud. O-abura-susuki. Perennials with elon- 

 gate, rather thick rhizomes covered with small scales; culms 

 erect, 80-120 cm. long, glabrous; leaf-blades flat, linear to 

 linear-lanceolate, usually 25-40 cm. long, 1-1.5 cm. wide, 

 pilose or glabrescent, narrowed to the obtuse base; ligules 

 hyaline, 1-1.5 mm. long, brownish; sheaths shorter than the 

 leaf-blades; panicles erect, 15-25 cm. long, the axis and 

 branches terete, smooth, resinously lustrous in life, die 

 branches erect or ascending, to 4-6 cm. long, usually slightiy 

 branched, often falsely verticillate; racemes linear, 2 — 3.5 cm. 

 long, erect, the joints and pedicels 2-3 mm. long, thickened 

 above with a tuft of spreading hairs about 1 mm. long at apex; 

 spikelets narrowly ovate, terete, 4.5-5.5 mm. long, acute, with 

 spreading hairs about 2 mm. long, pale green, awned; glumes 

 rather coriaceous, with raised nerves; awn of fertile lemma 



perfect, 7-12 mm. long. Aug.-Oct. Slopes in mountains; 



Hokkaido, Honshu, Shikoku, Kyushu; rather common. 



Korea, Manchuria, China, and Siberia. 



2. Spodiopogon depauperatus Hack. Miyama-abura- 

 susuKi. Glabrous or glabrescent perennial with short rhi- 

 zomes; culms 60-80 cm. long, with few, short, sheathing 

 leaves at base; cauline blades lanceolate to linear-lanceolate, 

 completely flat, usually glabrous, membranous, 15-20 cm. long, 

 1-1.5 cm. wide, cuneate at base; ligules semirounded to trun- 

 cate, glabrous, 0.5-1.5 mm. long; sheaths shorter than the 

 blades, glabrous; panicles exserted, 8-12 cm. long, the branches 

 falsely verticillate or solitary, sometimes slightiy branched, 

 glabrous, ascending, to 2-3 cm. long; racemes 6-8 mm. long, 

 with 3 to 5 spikelets, the joints and pedicels 2-3 mm. long, 

 thickened above, with a tuft of spreading, white or reddish 

 hairs less than 1 mm. long; spikelets narrowly ovate, 4-5 mm. 

 long, acute, terete, nerved, sparsely white-pilose; glumes firmly 

 herbaceous, pale green, or slightiy purplish, scaberulous, the 

 first 2-denticulate, the second awn-pointed; awn of fertile 



lemma perfect, 7-8 mm. long. June-Aug. Mountains; 



Honshu (Japan Sea side of centr. and n. distr.) ; rather rare. 



