pe 
". 
V. Remarks on the Structure of Bamboo Leaves. 
By Sir Dierricu BRANDIS, K.C.7.E.,, Ph.D., F.R.S., PLAS. 
(Plates 11-14.) 
* Read 1st November, 1906. 
CONTENTS. Page 
IRR a a a A ae WX EM TES SERS E VA d SPERO 69 
PE DE a Deere a, E E ee E gir ene ye eee rae eae 7 
Be oe E a S Rr A CXY SA S hee eh ees blo wees 72 
Bands of Bulliform Cells in the Leaves of other Grasses ...............2004 7 
DRE E eg a aa a a a sean are aris 75 
Midrib, Longitudinal Nerves, Transverse Veins, and Strands of Sclerenchymatous 
eNO aN PE d us M dom. QUNM. FSI FINA S EP bees enc VESTI ob i 
Groups of large thin-walled colourless Cells ........ 0... cece ee ce cece eens 79 
Be Ra ee Oe eo Ee aa pae RE eara ee I 9 maro ha 80 
raaro Or TERT Ns NEP DHT 84 
Distinguishing Characters of Bamboo Leaves .......... eee 85 
Leaf-strueture: Biological and other Peculiarities of Bamboos ................ 85 
The Tribe: Pharos: oA ONE VAT UAE AA METTE UA lanas vi Wanda en 87 
Bibliography 7.4.5429 4 VA ES QUA kd» Pk ewes UE ALU raa es BLA RR e t 88 
Explanation of the Platos cocaina 65 Ce eA A eos uawsEeRaE Mk ra mà d eens 89 
COMMENCING with the classical researches by S. Karelstschicoff (1868) and 
J. Duval-Jouve (1870 and 1875) a large number of important publications on the 
anatomical structure of grass leaves have appeared, a list of which will be found at the 
end of this paper. The leaves of the tribe Bambusez, however, have not yet, so far as 
I am aware, been the subject of sufficiently comprehensive treatment. The structure of 
Bamboo leaves is peculiar and remarkably uniform, and this I regard as the principal 
result of my present researches. These researches, however, in no way exhaust the 
subject. "Though [ have examined the leaves of 122 species belonging to 21 genera, 
I must here content myself with describing certain general features and must leave 
many important points to be settled by the researches of younger botanists. 
'The transverse section of a mature Bamboo leaf shows halfway between two longitu- 
dinal nerves a band of remarkable bulliform cells belonging to the upper epidermis, 
| first figured by Karelstschicoff, in Bull. Soc. Nat. Mose. xli. t. 3. fig. 1, for Bambusa 
stricta (Dendrocalamus strictus, Nees), and fully described as “ cellules bulliformes " for 
numerous species of grasses by Duval-Jouve. On both sides of this band, between it 
and the vascular bundles (longitudinal nerves) in the interior of the leaf, but nearer the 
lower epidermis, are large, more or less oblong, apparent cavities, the nature of which 
has been correctly explained by Karelstschicoff. The remaining space between two 
SECOND SERIES.—BOTANY, VOL. VII. N 
