the Young Epicotyl in some Ranalean Forms. 161 
bundles in the internode are very numerous and well marked off from the 
ground tissue (see Text-fig. 5). 
The nodes and internodes are all perfectly distinct, though the first 
two or three leaves may not have their full complement of strands at the 
point of insertion. The cotyledonary node is quite typical (see Text-fig. 6). 
N. aristata shows similar features. 
Text-fig. 5. Nigella hispanicci. Part of vascular 
ring in first internode. 
Adonis . Perennial species have an extensive cambial development in 
the adult plant, whereas A. aestivalis retains a ring of separate bundles 
(Marie). 
The seedling of the latter species has two large lanceolate cotyledons 
and a well-marked cotyledonary tube. The first two leaves are much cut 
up and in an opposite pair at right angles to the cotyledons. Later leaves 
show the usual two-fifths phyllotaxis. The anatomy of the seedling 
strongly resembles that of Delphinium Ajacis, except that it is the first two 
foliage leaves which are inserted at a single node. These frequently have 
both laterals, whereas there are none in the cotyledons. Pericyclic arcs 
composed of transfusion-like elements are seen at an early age outside the 
larger bundles. 
Myosurus . The whole plant of M. minimus is very minute. The 
part above ground consists of a very short stem, bearing a number of 
needle-like leaves at the ground level, continued into a long peduncle 
terminating in a single flower. 
In well-developed specimens axillary buds are present in the axils of 
M 
