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113. b. Tubers of Dioscorea japonica, 77;., Jap. Muka-
go, Niikago ; the small tubers about the size of the thumb grown
at the leaf-exils of Dioscorea japonica, T/i. (110-111), etc. are
eaten boiled or plantjd as the seeds.
114. Colocasia antiquorum, Schott., Jap. Sato-imo,
Hatake-imo ; a cultivated tuberous plant of the order Araceae
embracing several varieties. It resembles very much To-no-imo*
but is quite green instead of purple. The petioles grown to the
length of 3-4 fts. are eaten boiled or as vegetable.
preserved dried and eaten
115. Colocasia antiquorum, Schott., var., Jap. Yatsu-
gashira ; a variety of To-no-imo (871 The leaves come out in
bundles of 8 or 9 inches with thin long petioles from the single
tuber. The latter grows to the size of 5-6 inches in diameter,
consisting of several sprouts, but very rarely produces young
tubers. It is eaten simply boiled or steamed. The taste is
wholesome resembling that of To-no-imo.
116. Colocasia antiquorum, Schott., var., Jap. Yegu-
imo, Hana-imo ; a variety of Sato-iino (114). Because of its
strong acridity it is grown under thick heaps of dust in rnalt state,
which is eaten by the name of Ne-imo (yam-root). The young
tubers are likewise eaten boiled.
117. Conophallus konjak, Schott., Jap. Konniyaku-imo;
a cultivated tuberous plant of the order Araceae. The tuber forms
a round ball extremely acrid in taste in fresh state. The people
used to make Konniyaku, a gelatinous tough food, by passing the
raw tubers in boiling hot water, but they now make it by reducing
the dried tubers into flour.
118. Sagittaria sagittifolia, L., Arrow- head, Jap.
Kuwai, Sliiro-kuwai ; a bulbous plant cultivated in swampy soil
and belonging to the order Alismaceae. Several stalks sprout from
one root and produce one tuber to each at the bottom, and in winter
months the tubers are collected and eaten thoroughly boiled. They
are also used for several purposes in cooking. Starch is obtained
from the bulbs. Generally the tuber is of a diameter of 1J inches