14 SIR DIETRICH BRANDIS ON THE 
VIII. Agrostidee. Aristida, Stipa (partly), Oryzopsis (incl. Piptatherum), Milium, Phleum, 
Sporobolus, Agrostis, Polypogon, Calamagrostis, Ammophila (incl. Psamma), Lagurus. 
IX. Avenem. Aira (partly), Holcus, Trisetum, Avena (partly), Gaudinia. 
X. Chloridez. Ctenium, Chloris (partly), Eleusine (partly). 
XI. Festucew. Pappophorum, Triodia, Diplachne, Gynerium, Arundo, Phragmites, Cynosurus, 
Koeleria, Molinia, Eragrostis, Melica (partly), Uniola, ZEluropus, Briza, Poa (partly), 
Glyceria (partly), Festuca (partly), Bromus, Brachypodium. 
XII. Hordez. Lolium, Agropyrum, Triticum, Lepturus, Hordeum, Elymus. 
XIII. Phares, Stapf. Olyra, Diandrolyra, Pharus, Leptaspis. 
XIV. Bambusew. All species. 
b. Alternating with stouter and over slender nerves. 
I. Panicem. Panicum (partly), Setaria, Cenchrus (partly), Pennisetum (partly). 
II. Maydew. Coix, Tripsacum, Zea. 
VI. Andropogonex. Imperata, Saccharum (partly), Erianthus, Andropogon (partly), Sorghum. 
c. One band on each side of midrib and a few near edge of leaf. 
VI. Andropogonex. Andropogon (partly). 
d. One band on each side of midrib only. 
VI. Andropogonee. Andropogon (partly). 
IX. Avene. Aira (partly), Avena (partly). 
X. Chloridez. Eleusine (partly). 
XI. Festucez. Sesleria, Catabrosa, Pleuropogon, Poa (partly), Glyceria (partly). 
XII. Hordes. Nardus. 
One band over midrib, with or without lateral bands. 
VI. Andropogones. Andropogon (partly). 
X. Chloridez. Chloris (partly), Eleusine (partly). 
XI. Festucew. Dactylis. 
B. Bands of bulliform cells both in lower and upper epidermis. 
I. Panicez. Amphicarpum, Panicum (partly), Cenchrus (partly). 
III. Oryzeæ. Leersia. i 
VII. Phalarideæ. Phalaris (partly). 
IX. Aveneæ. Danthonia. 
XI. Festuceæ. Melica (partly). 
C. No distinct bands of bulliform cells. 
VIII. Agrostideæ. Stipa (partly), Mibora (Chamegrostis). 
XI. Festucee. Ampelodesma, Distichlis, Festuca (partly). 
e 
It is a noteworthy fact that in all Bamboos and the genera of the new tribe Phareg 
the distribution of bulliform cells is uniform; for among the genera for which the —— 
structure of leaves has been recorded no less than 13 have a different arrangement in 
some of their species. These genera are, arranged according to tribes in their usual 
sequence :—I. Panicum, Cenchrus, Pennisetum. VI. Andropogon. VII. Phalaris — 
VIII. Stipa. IX. Aira, Avena, X. Eleusine. XI. Melica, Poa, Glyceria, Festuca. 
The only case analogous to that of Bamboos in this respect is that the three genere of 
Maydeve (Coix, Tripsacum, and Zea), of which the leaves have been examined, have the 
bands of bulliform cells alternating with the stouter, and situated over the slender nerves: — 
ES ea ee S 
