YBISTAX ANTISYPHILITICA.--A plant of the order of _Bignoniaceae_,
called Atunyangua in the Andes of Peru, where the inhabitants dye
their cotton clothes by boiling them along with the leaves of this
plant; the dye is a permanent blue. The bark of the young shoots
is much employed in medicine.

156. CYCAS REVOLUTA.--The sago palm of gardens. The stem of the plants
abounds in starch, which is highly esteemed in Japan. A gum exudes
from the trunk of the old plant, which is employed medicinally by
the natives of India.

157. CYCAS CIRCINALIS.--A native of Malabar, where a kind of sago is
prepared from the seeds, which are dried and powdered; medicinal
properties are also attributed to the seeds.

158. DACRYDIUM FRANKLINII.--Called Huon pine, because of its being
found near the Huon River, in Tasmania. It belongs to the yew
family. It furnishes valuable timber, very durable, and is used
for ship and house building; some of the wood is very beautifully
marked, and is used in furniture making and cabinetwork.

159. DALBERGIA SISSOO.--A tree of northern India, the timber of which
is known as Sissum wood. This wood is strong, tenacious, and
compact, much used for railway ties and for gun-carriages.

160. DAMARA AUSTRALIS.--A singular plant of the _Coniferae_ family,
called the Kauri pine. It forms a tree 150 to 200 feet in height,
and produces a hard, brittle resin-like copal, which is used in
varnish.

161. DASYLIRION ACROTRICHUM.--A plant of the pineapple family, from
Mexico. The leaves contain a fine fiber, which may be ultimately
more extensively utilized than it is at present.

162. DESMODIUM GYRANS.--An interesting plant of the pea family, called
the moving plant, on account of the rotatory motion of the
leaflets. These move in all conceivable ways, either steadily or
by jerks. Sometimes only one leaf or two on the plant will be
affected; at other times a nearly simultaneous movement may be
seen in all the leaves. These movements are most energetic when
the thermometer marks about 80 deg.. This motion is not due to any
external or mechanical irritation.

163. DIALIUM ACUTIFOLIUM.--The velvet tamarind, so called, from the
circumstance that its seed-pods are covered with a beautiful black
velvet down. The seeds are surrounded by a farinac