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$3& EXPLANATION OF THE PLATES.
PLATE THE SECOND.
Roots.
Fig. I. Orchis militaris. Orchidece. Root scrotiform.
a. Old tuber, that sent up and nourished the stem of
the preceding season.
b. New tuber, that sent up and nourished the present
year's stem.
c. Fibrous radicles.
Fig. 2. Arum Italicum. Aroidece. Root progressive,
tuberous.— a. Turions.
Fig, 3. Neottia abortiva. Orchidece. Root grumous.
Fig. 4-. Gratlola officinalis. Scrofularincei Root horizontal,
progressive, jointed, fibrous at the joints. This
root, or rhizoma, formed by the base of the stem, is frequently
kneed.
Fig. 3. Arrhenatherum elatius. Graminecs, Root knotty,
jointed, comose at the joints.—This root is formed by the
base of the culm, the joints of which are swollen.
Fig. 6. Helianthus tuberosus. Compositce. Root fibrous
and tubercular.
Fig. 7. Succisa Fuchsii. DipsacecB. Root bitten, and
having fibrous radicles.
Fig. 8. Ixia polystachia. Iridece. Root fibrous, bulbbearing.
a. Bulb placed above, coated.
Fig. 9. Asphodelus ramosus. Asphodelece. Root fasci-
culate.
Fig. 10. Saxifraga granulata. SaxifragecB. Root comose,
bulbille-bearing ; bulbilles scaly.
Fig. II. Allium nutans. Asphodelece. Root progressive,
bulb-bearing at «, seal-like at b, fibroui at d.