88 SIR DIETRICH BRANDIS ON THE 
3. Diandrolyra bicolor, Stapf, in Kew Bulletin, 1906, p. 201. (Pl. 14. figs. 44, 45.)  Bulliform cells 
numerous, often occupying the entire interval between two longitudinal nerves, gradually 
decreasing to the size of epidermis-cells. Apparent cavities very narrow, the thin-walled cells in 
them before collapsing containing chlorophyll (fig. 45). Midrib : one vascular bundle only on the 
underside. Parenchyma and mestome-sheath of vascular bundles in longitudinal nerves as in 
Bamboos. Chlorophyll-cells with distinct folds. 
4. Pharus latifolius, Linn. (P. scaber, Humb. Bonpl. et Kunth in Martius's Fl. Brasil. ii. 2, p. 20), 
Tropical America. Bulliform cells continuous between longitudinal nerves, all of nearly equal size, 
not filled with silica. Apparent cavities large, chlorophyll parenchyma scanty. Midrib with two 
elts of vascular bundles under the girders of sclerenchymatous fibres. Linear and short epidermis. 
cells filled with silica, conspicuous ; numerous long slender hairs appressed to epidermis. Transverse 
veins unusually stout. 
5. Leptaspis urceolata, R. Br. Malaya. 1-2 feet high. Bulliform cells, not filled with silica, scarcely 
larger than the other cells of the upper epidermis, surface of upper epidermis uneven. Apparent 
cavities large, chlorophyll parenchyma scanty. Midrib with only one vascular bundle on the under- 
side. Short epidermis-cells filled with silica, numerous and very prominent. Many long slender 
hairs appressed to epidermis. ‘Transverse veins unusually stout. 
hese remarks will make it clear that in some but not in all respects the leaves of 
these genera have the structure of Bamboos. It will be a matter of considerable interest 
to ascertain whether any other genera of Grasses are in a similar position. With 
reference to the cells in the apparent cavities of Diandrolyra containing chlorophyll, it 
may be noted that the analogous cells of Dinochloa Macclellandii may also possibly 
contain chlorophyll when young. 
BIBLIOGRAPHY. 
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