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INTRODUCTION TO BOTANY. 21Ss
At the tip, apieilaris. Placed opposite the hile. Colchicum.
Vague, vagus. Placed in the perisperm, but neither at
the bottom, top, or side of the seed.
Nestling, nidulatus. Placed in a sac formed by a fold of
the inner skin of the seed. Commelina.
If White, alhus., lacteus. Most embryos.
Yellowish, lutescens. Ribes spinosum glabrum.
Green, viridis. Acer majus, Pistachia Terebinthus.
Leadcolour, plumbeus. ^chinops.
Purplish, purpureiis. Bidens and Zinnia when the seeds
are fresh.
il Large-footed, macropodius. The radicle very large,
and bulging out like a head.
Large-headed, macrocephalus . The cotyledons swelled
out into a mass much larger than the other part.
Roots within, e?idor/iizus. Radicles growing from the
base of the embryo and piercing the covers.
Roots without, exorlilzus. Radicles completely developed
in the embryo, and only lengthening in germination.
Roots united, synorhiziLS.
with the perisperm.
Radicle united in some degree
CoTYI,EDONS.
Cotyledones, Lobi, Valvae seminum. Tlie part of the
kernel that forms the first leaves of the plant during gej-mi-
natio7u PI. 14, fig. 12; pi. 15, fig. 19, 22 c; pi. 16, fig. 13.
In one-cotyledon embryos, the cotyledon forming nearly
the whole mass of the embryo, the external characters are
common both to the embryo and the cotyledon, and it is
indifferent whether it be said that the embryo or the cotyledon
of holcus is bucklershape ; but in other embryos,
the cotyledons are in general very distinct.
Fleshy, Cotyledones carnosce. Thick, juicy, firm, and
breakable. Corylus, Faba, Amygdalus communis, A.
Persica.
Leaflike, foliacecE. Thin, and frequently ribbed like
leaves. Nyctaginese, Tilia, Cassia Fistula, Euphorbiaceae.
PL 14, fig. 12.
% Dotted, punciatce. Surfaces with either transparent
points, Aurantiaceae ; or coloured ones. Anagallis when,
germinating.
K\h\)eA,nervat(E. Surface ribbed. Tilia, MirabilisJalapa.
RiblesSj enerves. Faba.