ERIOCAULONE. 117 
particularly where this is quinarily divided. — Thus in E. 
setaceum, the tubes are generally in the following. ratio. 
Sheath 10, peduncle 5. 
In E. acanthocephalum the same occurs, In E. glaucum: 
sheath 11-12, peduncle 5-6, E. Wallichianum presents 
no correspondence, the number of tubes of the sheaths 
being about 16 or 18, of the peduncle 5-7. "There does 
not appear to be any fixed correspondence, as might be 
expected between the tubes of the sheaths, and leaves. 
Peduncles. These are marked externally with whitish lines, 
running in a spiral direction, the spaces between these being 
green. The white lines correspond to the longitudinal 
septa, the green spaces to the tubes.: They are cellular in 
the centre, and around this are arranged their vascular fasci- 
cles, which vary in number with the tubes. This cellular part, 
or axis, is prolonged outwards into as many spokes as there 
are external white lines, which in fact are nothing but the 
termination of these spokes. 'The spokes are with per- 
haps the exception of. E. Wallichianum, identified with the 
cuticle. The whole of this system is composed of more 
or less elongated cellular tissue, in E. Wallichianum ap- 
proaching in density to woody fibre. In this too, the spokes 
project further beyond the tubes than those of any of the 
other species. With respect (о the tubes they are in every 
respect analogous to those of the leaves and sheaths. 
They terminate at the apex of the peduncle in cul-de-sacs, 
the green spaces between the terminations of the spokes 
abound with stomata, we have the same form of parenchyma, 
disposed indeed with less regularity, and the same transverse 
septa, except in E. Wallichianum etc. in which they are very 
incomplete. Does this depend on the denser nature of the 
tissue of the scapes, which is evidently opposed to rapid 
elongation? ; in E. setaceum they are precisely the same as 
those of the leaves, I may observe that the development of the 
spokes is in an inverse ratio with that of the tubes. This 
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