On some points in the Anatomy of 
the Ophioglosseae 1 . 
BY 
L. A. BOODLE, F.L.S. 
With Plate XX. 
HE present paper is the result of an examination of 
1 Ophioglossum vulgatum , Botrychium Lunaria , &c., which 
was undertaken in the first instance for comparison with 
‘ seedling ’ plants of Botrychium virginianum 2 . It seemed 
probable that such a comparison might throw some light on 
the meaning of the monarch roots of Ophioglossum, or on 
some other peculiarity in one or other of the two genera. 
Some further investigation of the development of the root- 
stele in Ophioglossum vulgatum also appeared desirable, to 
determine whether the xylem or phloem showed any trace of 
diarch structure. 
The accounts previously given of the structure, develop- 
ment, & c., of these plants will be referred to later on, after 
the present observations have been described. Those relating 
1 From the Jodrell Laboratory, Royal Gardens, Kew. 
2 Material of prothalli and seedling-plants of this species was kindly presented 
to Kew by Mr. E. C. Jeffrey of Toronto University. 
[Annals of Botany, Vol. XIII. No. LI. September, 1899.] 
