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evations or depressions. Such leaves are called dlistered. In some, 
the lower part of the leaf has numerous oblong blisters extending 
parallel to each other, and nearly or quite at right angles to the mid- 
rib. Such leaves we have called puffed. 
When the whole leaf is somewhat twisted or contorted, we have 
called it waved; when the midrib curves downward in the centre, 
so that the leaf is concave, we have called it spoon form. When 
the midrib curves upward, making the upper surface of the leaf 
convex, we have called it inversely spoon form. 
When the leaves of a young plant of lettuce are all curved in the 
same direction like the wings of a turbine wheel, or a paper wind 
mill, we have called the plant wheel-form. 
In some varieties the outer leaves of the head are so formed that 
they curve inward at the top as far as, or farther than, the centre 
of the head, so that each leaf represents nearly a hemisphere. 
Such leaves have some resemblance to a hood upon the head, and 
hence in want of a better term we have called them hood-shaped. 
In a few varieties, in which the foliage is very compact, the outer 
leaves curve downward, overlapping each other something like the 
shingles upon a roof. We have called such plants shingled. 
As the different varieties of lettuce bloom, a rather marked differ- 
ence appears in the form of the flower head. In some this is com- 
pact and nearly flat on the top more or less resembling the corymb; 
in others it is long and loose, more like the panicle. In our des- 
criptions we call these heads which resemble the corymb more than 
the panicle, corymbose; and those that resemble the panicle more 
than the corymb, paniculate. 
In the stem leaves of most varieties of lettuce more or less promi- 
nent lobes extend beyond the point where the midrib attaches to the 
stem. These lobes we have called ears. 
We append the authority for each name or synonym used.* 
When the authority is printed in italics with a date, it indicates 
that we have grown such variety or synonym from seed obtained 
from the party named, and in the year specified. Example. In the 
first variety described—the Berlin lettuce—we have grown the syn- 
nonym All the Year Round, b. s., from seed from Vilmorin, Andri- 
eux & Co., in 1884, and from Hiram Sibley & Co., in 1885. 
Synonyms determined or verified by ourselves are printed in ital- 
ics. Synonyms determined by comparing plants, or our own notes 
with the descriptions of others, have ‘‘(d)” appended immediately 
after the name. Synonyms that have been claimed by others, but 
which we have not verified have only the authority appended. 
miieeletters “*b.!'s.,” “‘gr./n.,” or *‘s. k.,” stand for “‘black seed,” 
according to the language in which the name or synonym is given. 
In like manner, the letters ‘“‘w. s.,” “gr. bl.,” or “w. k.,” stand for 
‘‘white seed.” 
Arrangement of the varieties, 
In the arrangement of the varieties, we follow the plan adopted 
in Les Plantes Potagéres, viz. that of separating them into three 
classes, designated as Cabbage, Cos and Cutting lettuces. This clas- 
sification is but partially founded upon botanical characters, and is 


*For explanation of the abbreviations used, see list given at the close of the 
introduction to Report of the Horticulturist. 
