GRAMINEAE 285 



ARUNDIN ARIA— continued 



(a) Stems purplish brown 



A. anceps. Ringal. 15. E. Stems erect, arching at top. Sheath mottled inside, 



hairy on margin. Ls. 4 X ^. North-west Himalaya. (Fig. 40 b.) 

 A. auricoma. 4. E. Stems very thin. Ls. 8x1, rounded or heart-shaped at 



base, striped with yellow. Japan. (Fig. 40 c.) 

 A. marmorea. 5. E. Stems solid, erect, clasped by persistent mottled sheaths. 



Ls. 5 X I, apex constricted about \ inch from top. Japan. 

 A. nitida. 10. E. Stems arching at top. Ls. 3 X :^, with tapering base. China. 



(Fig. 40 G.) 

 A. palmata. 8. E. Ls. 12x3, spreading palm-like from end of branch. 



Japan. (Fig. 40 d.) 



{b) Stems green or yellozv 



A. angustifolia. 6. E. Stems erect, very thin. Ls. 6xf, rounded at base, 

 bristle-toothed on one margin, sheath with tuft of erect hairs at top. 

 Japan. 



* A.falcata. Ringal. 10. E. Young stems covered with bloom. Ls. 4X^, 



curved, without cross veinlets, rows of transparent dots between veins. 

 Himalaya. (Fig. 40 e.) 



* A. Falconeri. Ringal. 25. E. Stems purple at joints, sheath purple. Ls. 



4 X I, no cross veinlets. Himalaya. 

 A. fastuosa. 25. E. Stems stout, erect; sheaths up to 9x4, glazed inside. 



Ls. 8x1, tapering base. Japan. (Fig. 40 j.) 

 A. Fortunei. 3. E, Stems very slender, sheaths persistent. Ls. 7x1, rounded 



base, striped with white, hairy on both sides. Japan. 

 A. graminea. 10. E. Stems slender, very hollow; branchlets in dense whorls 



at top. Ls. 9 X I, tapering base. Japan. (Fig. 40 h.) 

 A. japonica. 15. E. Stems erect, very hollow; sheath with long tail-like point. 



Ls. 12 X 2, long-pointed. Japan. (Fig. 40 f.) 

 A. Ragamowskii {Bambusa tessellata). 3. E. Stem sheaths covering several 



joints. Ls. 18x4. China. 



A. Simonii. 18. E. Stems very hollow; sheaths rather persistent, hairy on 



margins, very glazed inside. Ls. 12X1, long-pointed, bright green above, 

 glaucous on one side of midrib below. China. 



Variety China. 4. Ls. 6 x |, dark green mottled with dull yellow. 



Arundo Donax. Great Reed. 10. July- August. E. Stems hollow. Ls. alter- 

 nate, awl-shaped, 24 X i i^, long-pointed, drooping, in two opposite rows, base of 

 blade clasping stem. Fls. in erect silky panicles up to 24 long. Mediterranean 

 region, India, etc. (Fig. 39 d.) 



BAMBUSA. Bamboo. Not distinguishable from Arundinaria, except in the 

 fl., which is rarely seen, and has six stamens {Arundinaria has three). The two 

 hardy species given below are, however, clearly distinguishable. 



B. disticha. 2. E. Stems slender, zigzagged. Ls. 2 X |^, in two opposite rows. 



Japan. (Fig. 40 k.) 

 B. quadrangularis. 30. E. Stem 4-sided, with rounded corners. Ls. 8xi, 

 margins bristly. China and Japan. 



CoRTADERiA (Gynerium) argentea. Pampas Grass. 14. August-October. E. 

 Ls. 60 X I, arising in a dense tuft from or near ground-level, rough to the touch 



