STRAWBERRY 291 
529. Here it should be said that in the Strawberry 
while the fruits are developing the globular flower axis 
enlarges very greatly, and its tissues become soft and 
juicy, and this is what we eat with so much relish. So 
the “‘strawberry”’ as we eat it is not a 
fruit properly speaking. It is a thickened 
flower axis (stem), covered with the tiny 3 
proper fruits, popularly supposed to be ~ 
seeds. 
Fie. 165. _—Fra- 
ari a (“‘straw- 
Laboratory Studies. Nore: In connection true (a "1 
with the anatomical studies of special plants 
suggested below the student is referred to the general studies 
on the cell, tissues, and tissue systems, already taken up in 
Chapters I, II, and III respectively. 
In working out the following studies the student should have 
before him specimens of the three plants named so as to make 
comparative studies of the structures represented by them.— 
(1) Ranunculus, (2) Alisma, and (3) Fragaria. Where these 
cannot be obtained, acceptable substitutions may be made as 
follows: for (1) Myosurus, Magnolia, Caltha, Hepatica, 
Anemone; (2) Sagittaria; (3) Potentilla, Rubus, Geum, 
Duchesnea. 
(a) Make a macroscopic examination of the stems (of the 
sporophytes) noting their shape, nodes, branching, bud and 
leaf arrangement, and follow with a microscopic examination of 
(i) a cross-section to show the location and structure of the vas- 
cular bundles, and the distribution of green and colorless 
tissues; and (ii) a longisection to show the tissues, epidermis, 
hairs and stomata. 
(b) Examine the roots (of the sporophytes) and note whether 
there is one main root (tap root) with lateral rootlets, or a 
cluster of roots arising from about the same point on the stem. 
Note the shape, size and character of the roots and rootlets. 
Make cross- and longisections of the younger and older parts 
and a longisection of the tip of a root, to study the location and 
character of the vascular bundles, the kinds and distribution 
of tissues, the origin of lateral roots, the character of the root 
cap, etc. 
