Notes. 
1125 
is justified. As fully explained in my paper, the identity of my specimen (sent to me 
in log form direct from the forest) is dubious, and the evidence inclines against its 
belonging to Q. spicata. Hence the indication prima facie is that my specimen and 
Bailey’s (obtained from Dehra Dun Research Institute) come from two different 
species. But the evidence is obviously incomplete, and the difference in structure 
of the two specimens does not necessarily imply that they come from two species, as 
in other species of Quercus transitional stages in the disintegration or integration of 
multiseriate rays demonstrate that vessels may occur in a region corresponding to one 
which is devoid of them in annual rings farther inwards or outwards. 
PERCY GROOM. 
NOTE ON THE ANATOMY OF STRIGA LUTEA, LOUR. 1 — A brief descrip- 
tion of the general habit of this semi-parasite has been given in the present number 
of the ‘ Annals of Botany ’, in a study of its haustorium , 2 in connexion with which its 
anatomical structure has now been investigated. The plant in its mature (flowering) 
state shows in its aerial stem the general features — the dense, closed woody cylinder, 
the narrow lumina of the vessels, the absence of medullary rays, &c. — which charac- 
terize the majority of the Order Scrophulariaceae . 3 Its structure is almost identical 
with that of Melampyrum prateme , as described and figured by Hovelacque , 4 almost 
the only difference between the two being the presence of hairs in Striga , and the 
absence of the scattered * trach^es initiales ’ which are figured as occurring outside 
the protoxylem in Melampyrum. As in the latter, no cork or collenchyma is formed 
— a fact which may be correlated with its herbaceous habit. The hairy covering 
consists of both simple and glandular hairs. The former are large stiff glandular 
hairs, consisting of a single cell with thickened cuticularized wall, mounted on a base 
of several epidermal cells, and generally sharply recurved towards the apex of the 
stem. Among these are scattered the smaller glandular hairs, which consist of a short 
one- or two-celled stalk and a peltate head of three or four cells ; similar hairs occur 
in a number of genera of the same order . 5 The transition from the aerial to the 
subterranean stem presents the usual features . 6 The stem becomes rounded instead 
of square in outline, the bast fibres disappear, and the width of the cortex increases, 
while that of the pith diminishes. The closed vascular ring breaks up into separate 
bundles, four main bundles and two leaf-trace bundles from the node immediately 
above. 
1 This investigation has been assisted by a grant from the Union Government. 
2 Stephens, Edith L. : The Structure and Development of the Haustorium of Striga lutea. Ann. 
Bot., vol. xxvi, p. 1067, 1912. 
3 Solereder, H. : Systematic Anatomy of the Dicotyledons, vol. i (English Translation). 
Oxford, 1908, pp. 583-9. 
4 Hovelacque, M. : Recherches sur l’appareil vegetatif des Bigoniacees, Rhinanthacees, Oro- 
banchacdes et Utricularides. Paris, 1888, pp. 384-90. 
6 Solereder, loc. cit., pp. 584-6. 
6 Costantin, J. : Tiges a&iennes et souterraines. Ann. Sci. Nat., Bot., ser. 6, vol. xvi, 1883, 
p. 164. 
