Gramineae 139 



7. SASA Makino & Shibata Sasa Zoku 



Rhizomes much ramified and long-creeping; culms woody, small to medium-sized, with slightly to prominently thickened 

 nodes; culm-sheaths persistent; branches solitary at each node; leaf-blades broadly lanceolate to narrowly oblong, usually 

 lustrous above, rather large, the auricles rounded, sometimes wanting, with rigid, scabrous, straight setae on the margin; panicles 

 pedunculate, bractless, on lower to upper part of the culms, the branches and pedicels pubescent; spikelets linear to narrowly 

 oblong, few- to rather many-flowered, the rachilla hairy; glumes wanting to I or 2, membranous; lemmas rather small, ovate, 

 5-18 mm. long, acute or sometimes awn-pointed, few-nerved; palea about equal in length to the lemma, 2-keeled; stamens 6, 



sometimes 3 or 5; style simple with 3 stigmas. Japan, Korea, Sakhalin, and Kuriles. Multitudes of species have been described 



from Japan, of which only the best marked are treated here. 



lA. Lemmas 12—18 mm. long; oral setae smooth above; stamens usually 4 or 5; rachilla-joints much shorter than the lemma. 



1. S. ramosa 

 IB. Lemmas 4— lO(-ll) mm. long; oral setae wanting, or when present, scabrous to the apex. 

 2A. Auricles and oral setae prominent, but deciduous in the 2d year; stamens 6; glumes 0-1 (-2), not prominent; rachilla visible. 



3A. Culms slender, low, sparsely branched, with greatly s%vollen nodes and elongate internodes; panicle-branches bearing 1-3 spikelets. 



2. S. nipponica 

 3B. Culms thicker, more elongate, much branched, nodes less swollen; lower panicle-branches bearing 3-10 spikelets. 



4A. Leaf -blades and culm-sheaths prominently pilose; leaves narrowly oblong, those of the 2d year conspicuously white-margined; 



culms 80-120 cm. long, branched i. S. veitchii 



4B. Leaf-blades and culm-sheaths not prominently pilose. 



5A. Leaves 5-8 cm. wide 4. 5. palmata 



5B. Leaves usually less than 5 cm. wide 5. 5. senanensis 



2B. Auricles wanting, the oral setae usually not developed; glumes 2, prominent; spikelets densely flowered, with usually shorter, hidden 

 rachilla. 

 6A. Stamens 6. 



7A. Culms ascending from base, with prominent nodes. 



8A. Leaf-blades pubescent below; culm-nodes hairy while young 6. S. cernua 



83. Leaf-blades glabrous; culm-nodes glabrous from the first 7. 5. I^urilensis 



7B. Culms erect from base, the nodes not prominent. 



9A. Culms 2-5 m. long; leaf -blades 8-30 cm. long; lemmas 10-12 mm. long; spikelets 6- to 10-flowered, 2-6 cm. long. 



8. S. japonica 

 9B. Culms about 1 m. long; leaf-blades 5-12 cm. long; lemmas 5-7 mm. long; spikelets 3- to 5-flowered, 1-1 .5 cm. long. 



9. S. owatarii 

 6B. Stamens 3 10. 5. borealis 



1. Sasa ramosa (Makino) Makino. Bambusa ramosa while young; leaves 4-7, the blades 10-25 cm. long, 3-7 cm. 

 Makino; Antndinaria ramosa (Makino) Nakai; Sasaella ra- wide, narrowly oblong, abruptly acuminate, rounded at base, 



mosa (Makino) Makino Azumazasa. Culms 1-2 m. prominentiy short-pilose beneath, broadly white-margined dur- 



long, to 9 mm. in diameter, purplish, glabrous, branched in ing the winter; oral setae distinct, but finally deciduous; 



upper part; branches solitary at the nodes; leaves 3-5, thinly peduncles usually elongate; spikelets many, linear. Honshu 



coriaceous, the blades broadly lanceolate, to 15 cm. long, 2 (Chugoku Distr.), Shikoku, Kyushu; also widely cultivated 



cm. wide, acuminate, rounded at base, usually puberulent be- in gardens. 



neath, more or less white-margined during the winter; leaf- 4. Sasa palmata (Bean) Nakai. Arundinaria palmata 



sheaths glabrous, the oral setae rigid below; spikelets rather Bean CHiM.'^KtZASA, Kumaizasa. Culms 1-1.5 m. long, 



few, in a peduncled racemelike panicle, linear, 3-6 cm. long, slighdy ascending from base, 6-8 mm. in diameter; leaves 5-9, 

 5- to 10-flowered; glumes membranous, small, narrow, the first the blades 10-35 cm. long, 5-8 cm. wide, narrowly oblong, 

 often wanting; lemmas chartaceous, 12-17 mm. long; rachilla- thinly coriaceous, usually glabrous on both surfaces, some- 

 joints usually Yi-Yi as long as the floret. May-June. Hon- times puberulent beneath, the auricles usually developed, 



shu. bristly ciliate; panicles long-peduncled, spikelets rather many, 



2. Sasa nipponica (Makino) Makino. Bambusa nip- loosely arranged; florets 7-9 mm. long, narrowly ovate. 



ponica Makino Miyakozasa. Rhizomes elongate; cukns Hokkaido, Honshu, Shikoku, Kyushu. Sakhalin. 



30-100 cm. long, solitary, sparsely branched at base, internodes 5. Sasa senanensis (Fr. & Sav.) Rehd. Bambusa senan- 



long and slender, with globosely swollen nodes, usually gla- ensis Fr. & Sav.; Arundinaria \urilensis var. paniculata F. 



brous; leaf-blades linear-oblong to narrowly lanceolate, 10- Schmidt; S. paniculata (F. Schmidt) Makino Nemagari- 



20(-25) cm. long, 2-3.5(-5) cm. wide, abruptiy acuminate, dake. Culms 2 m. long or more, ascending at base; leaf- 

 cuneate to obtuse at base, white-margined during the winter, blades 15-30 cm. long, usually 3-5 cm. wide, more or less 

 pilose beneath; leaf-sheaths usually glabrous, the auricles pilose; leaf -sheaths glabrous, the oral setae sometimes want- 

 rounded, with spreading oral setae, deciduous in the 2d year; ing; panicles rather large, often purplish. Mountains; Hok- 



spikelets 3- to 6-flowered, the florets loosely arranged, 6-10 kaido, Honshu, Shikoku. 



mm. long.— — Honshu, Shikoku, Kyushu. 6. Sasa cernua Makino. 5. kttrilensis var. cernua (Ma- 



3. Sasa veitchii (Carr.) Rehd. Bambusa veitchii Carr.; kino) Nakai Okuyamazasa. Culms to 1.7 m. long, 1 



Phyllostachys bambtisoides var. albomarginata Miq.; S. albo- cm. in diameter, glabrous, ascending at base, with puberulent 



marginata (Miq.) Makino & Shibata Ku^CAZASA. Culms nodes; leaf-blades thinly coriaceous, 20-23 cm. long, 2.5-6.5 



50-120 cm. long, loosely branched in upper part, sheaths hairy cm. wide, acuminate, acute to obtuse at base, glabrous above. 



