INTRODUCTION TO BOTANY. 
209 
Adherent, adhcerens. Adhering to its covers. Gramineae, 
Urn bell iferae. — This only takes place when there is a peri- 
sperm, and in this case the true place of the hile, and con- 
sequently the base of the seed, is frequently very difficult to 
be ascertained. 
If Single, unica. Only one kernel in a seed. Most 
plants. 
Double, duplex. Two in each seed. Eriolithus. 
Perispermed, perispermata , perispermica , albummosa. J 
endospermica. Having a perisperm. Cyperaceae, Gramineae, 
Rubiaceae, Umbelliferae. 
Not-perispermed, aperispermata, exallmminosa , episperm - 
ica, epiperispermica. Without a perisperm. Alismaceae, 
Compositae, Faba, Phaseolus. 
Tuberous, tuberosa. Composed of an uniform mass, with 
several germinating points. Aroideae, Calladium. 
Perisperm. 
Perispermum, Albumen, Endospermum, Secundinae in- 
ternae, Medulla seminis. Cellular tissue accompanying the 
embryo in the kernel , but scarcely ever adhering to it , and 
having no vascular organization ; furnishing , during germi- 
nation, the first nourishment to the young plant. PI. 18, 
fig. 20 e; 22. 
Central, Perispermum centrale. Forming a mass in the 
centre of the kernel, and surrounded by the embryo. Cus- 
cuta Europaea, Silene, Nyctagineae. 
Circumferential, periphcericum. Surrounding the em- 
bryo, and concealing it. Abietideae, Cupressideae. 
One-sided, unilaterale. Placed on one side, and the em- 
bryo on the other. Gramineae. 
If Dry, siccum , aridum. Gramineae. 
Mealy, farinosum. Dry, and reducible by trituration 
into a fine, soft powder. Triticum, Avena, Secale. 
Friable, friabile. Dry, and crumbling by a slight rub- 
bing, Piper nigrum, Gunnera scabra. 
Oily, oleagineum. Greasy to the touch, and yielding oil 
by expression. Euphorbiaceae, Nyssa sylvatica. 
Mucilaginous, mucilaginosum. Having, while moist, the 
consistence of a gummy matter slightly wetted. Convol- 
vulus. 
Pellicular, membranaceous, pellicular e, membranaceum. 
Formed of a thin flake or pellicle. Most labiatae, Prunus, 
Amygdalus. 
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