138 



Gramineae 



Tai-min-chiku. Rhizomes short; culms in tufts, erect, 3-5 

 m. long, 5-20 mm. in diameter; culm-sheaths at first sparsely 

 setose, soon glabrate; branches with densely arranged branch- 

 lets; prophylla short, ascending-hirsute; leaves 4-6, the blades 

 narrowly lanceolate to linear, 10-30 cm. long, 8-20 mm. wide, 

 caudately acuminate; leaf -sheaths glabrous, usually without 

 oral brisdes; spikelets 1-3, 3-5 cm. long, less than 10-flowered; 

 lemma about 10 mm. long; palea hirsute with spreading hairs 



on the keels. June. Spontaneous in the Ryukyu Islands, 



cultivated in Japan. 



3. Arundinaria linearis Hack. Pleioblastus linearis 



(Hack.) Nakai Ryukyu-chiku, Gyoyo-chiku. Culms 



2-3 m. long, glabrous, smooth; culm-sheaths glabrous; 

 branches 1-5, densely ramified; leaves 6-10, the blades broadly 

 linear, glabrous, rather small, caudately acuminate, the oral 

 brisdes 5-6 mm. long, erect, smooth; inflorescence terminal on 

 leafy branchlets; spikelets few, few-flowered; lemma 10-12 



mm. long. Spontaneous in the Ryukyu Islands, cultivated 



in Kyushu (s. distr.). 



4. Arundinaria pygmaea (Miq.) Mitf. Bambusa 

 pygmaea Miq.; A. variabilis var. pygmaea (Miq.) Makino; 

 Pleioblastus pubescens Nakai; A. variegata var. viridis forma 

 pubescens Makino Ke-nezasa, Ke-oroshima-chiku. Rhi- 

 zome elongate; culms distant, erect, 1-2 m. long, 2-5 mm. in 

 diameter; nodes densely fringed with brownish brisdes; 

 branches 1-3 at each node; leaf-blades lanceolate to narrowly 

 so, 3-20 cm. long, 4-30 mm. wide, abruptly acuminate, obtuse 

 to rounded at base, pubescent beneath; leaf-sheaths glabrous or 

 retrorsely setulose between the nerves when young, the oral 



brisdes smooth. May-June. Honshu (Suruga and westw.), 



Shikoku, Kyushu; common in hills. 



Var. glabra (Makino) Ohwi. A. variegata var. viridis 

 forma glabra Makino ^Nezasa. Leaves and nodes gla- 

 brous; occurs within the range of the typical phase. 



5. Arundinaria kiusiana (Makino) Ohwi. Pleioblastus 



\iusianus Makino ^Fushidaka-shino. Culms 2-3 m. long; 



nodes with dense retrorse brown brisdes; leaves 3-8, the blades 

 narrowly lanceolate, 7-25 cm. long, 8-28 mm. wide, long- 

 acuminate, rounded to abrupriy acute at base, glabrous; leaf- 

 sheaths glabrous on the back, ciliate on the margin, the oral 

 bristles erect, smooth. Kyushu (Higo) . 



6. Arundinaria pumila Mitf. Pleioblastus pumilus 



(Mitf.) Nakai; Nipponocalamus pumilus (Mitf.) Nakai 



Sudare-yoshi. Culms 1-1.2 m. long, 2-2.5 mm. in diameter, 

 nearly simple; nodes densely brown-hirsute; leaves 5-6, the 

 blades narrowly lanceolate, 12-20 cm. long, 7-23 mm. wide, 

 acuminate, abrupdy acute at base, sometimes pilose beneath; 



leaf-sheaths glabrous, the oral bristles smooth, whitish. 



Honshu (Chugoku Distr.), Shikoku, Kyushu. 



7. Arundinaria argenteostriata (Regel) Vilm. var. ar- 

 genteostriata. Pleioblastus argenteostriatus (Regel) Nakai; 

 Bambusa argenteostriata Regel; A. chino var. argenteostriata 

 (Regel) Makino; Nipponocalamus argenteostriatus (Regel) 



Nakai Okinadake. A cultivated phase with variegated 



leaves. 



Var. communis (Makino) Ohwi. Pleioblastus communis 



(Makino) Nakai; A. communis Makino Gokidake. 



Culms 1-3 m. long, 2-15 mm. in diameter, often branched; 

 nodes densely hairy, later glabrate, the hairs at first erect, soon 

 spreading; culm-sheath ciliate; leaves 3-13, the blades lanceo- 

 late, 10-30 cm. long, 10-35 mm. wide, acuminate, rounded to 

 abruptly acute at base, glabrous; spikelets 5- to 9-flowered, 

 3.5-7 cm. long; lemmas 11-19 mm. long; palea 10-12 mm. 



long. Honshu (Kinki Distr. and westw.), Shikoku, Kyu- 

 shu. 



Cv. disticha. A. argenteostriata var. disticha (Mitf.) Ohwi; 

 Nipponocalamus argenteostriatus var. distichus (Mitf.) Nakai; 



Bambusa disticha Mitf. Plant smaller in all its parts. 



Cultivated. 



8. Arundinaria nagashima Mitf. Nipponocalamus na- 

 gashima (Mitf.) Nakai; Pleioblastus nagashima (Mitf.) Nakai 



Hirouzasa. Culms 0.5-1.5 m. long, 2-10 mm. in 



diameter, densely retrorse-hairy only while young; nodes 

 pilose while young; leaf-blades lanceolate to narrowly so, 

 5-25 cm. long, 7-30 mm. wide, long-acuminate, rounded to 

 abruptly acute at base, glabrous; leaf -sheaths densely retrorse- 

 hairy and rather long spreading-ciliate; the oral brisdes 

 smooth, white. Honshu (Tokaido, se. Kinki), Kyushu. 



9. Arundinaria vaginata Hack. Pleioblastus vaginatus 

 (Hack.) Nakai; Nipponocalamus vaginatus (Hack.) Nakai 

 Hakonedake. Culms 2-4 m. long, 2-12 mm. in di- 

 ameter, glabrous; nodes and culm-sheaths glabrous; branches 

 1-3 at each node; leaf-blades narrowly lanceolate, 5-20 cm. 

 long, 5-15 mm. wide, acuminate, rounded to acute at base, 

 glabrous or nearly so; spikelets 2-4 cm. long, 4- to 7-flowered; 



lemma about 15 mm. long, purplish; palea 7-9 mm. long. 



Honshu (Sagami, Izu, Suruga). 



10. Arundinaria virens (Makino) Ohwi. Pleioblastus 



virens Makino; Nipponocalamus virens (Makino) Nakai 



Ao-nezasa. Culms erect, 2-4 m. long, 2-17 mm. in di- 

 ameter, glabrous; culm-sheaths glabrous; leaf-blades lanceolate 

 to narrowly so, 3-25 cm. long, 5-25 mm. wide, long-acumi- 

 nate, rounded at base, minutely pilose along the midrib be- 

 neath; leaf-sheaths green, retrorsely short-hairy between the 

 internerves while young, the oral bristles erect, 3^ mm. long, 

 smooth, flexuous. Honshu (Tohoku Distr.). 



11. Arundinaria simonii (Carr.) A. & C. Riv. Bambusa 

 simonii Carr.; Pleioblastus simonii (Carr.) Nakai; Nippono- 

 calamus simonii (Carr.) Nakai ^Medake, Kawa-take. 



Culms erect, 3-5 m. long, 1-3 cm. in diameter, glabrous, green; 

 branches 5-10 at each node, spreading, curving above; leaves 

 3-6, puberulent only on the upper surface of the petiole, the 

 blades narrowly lanceolate to broadly linear, 5-30 cm. long, 

 1-3 cm. wide; leaf-sheaths glabrous, the oral bristles erect, 

 smooth; spikelets rather numerous, fasciculate in the leaf-axils, 

 4- to 10-flowered; lemma 10-18 mm. long, sometimes purplish. 



Sometimes cultivated, spontaneous in Honshu (s. Kanto 



Distr. and westw.), Shikoku, Kyushu. 



12. Arundinaria chino (Fr. & Sav.) Makino. Bam- 

 busa chino Fr. & Sav.; Pleioblastus maximowiczii (A. & C. 

 Riv.) Nakai; Nipponocalamus chino (Fr. & Sav.) Nakai; P. 

 chino (Fr. & Sav.) Nakai; B. maximowiczii A. & C. Riv., non 

 Munro, nee Nichols.; A. simonii var. chino (Fr. & Sav.) Ma- 

 kino AzuMA-NEZAsA, Shinagawadake. Cubns 0.5-2.5 m. 



long, 2-7 mm. in diameter, smooth; branches 1-5 at each node; 

 culm- and leaf-sheaths glabrous excepting the ciliate margins; 

 leaf-blades lanceolate to narrowly so, 5-25 cm. long, 5-20 mm. 

 wide, gradually acuminate, rounded to abruptly acute at base, 

 glabrous or shghdy puberulent on one side beneath; spikelets 

 few, fasciculate in leaf-axils, sometimes racemose, 3-7 cm. 

 long; lemmas green to purplish, 10-19 mm. long; palea about 



10 mm. long. Honshu (Kanto, and s. Tohoku Distr.) ; 



very common. Cv. laydekeri. A. chino f. laydekeri (Bean) 



Ohwi; Pleioblastus chino var. layde\eri (Bean) Nakai; A. 

 layde\eri Bean Kinjo-chiku. Leaves yellow-variegated. 



