5 PRINCIPLES OF BOTANY, ETC. 
posite to each other, as in the red water soldier, 
Stratiotes aloides. 
3. Vague, (vaga), when there is not. only a large. 
common vagina, but hkewise separate vagine for 
each particular division of the flower stem,, and for 
each particular flower, | | 
4, Halved, (dimidiata), , the, same with univalye, 
only the flowers are covered but on. one, side. 
5. One-flowered, two-flowered, &c. many-flowered 
(uni-bi-multiflora), when it. includes. one, or more 
flowers. | 
6. Withering, (marcescens ),. when, 1t. withers at 
flowering, or a short while before... 
7. Permanent, ( persistens), when it remains un- 
changed till the fruit ripens. 
e132, 
Fhe rouy, (ochrea)y is a. leaf-hke body, which 
surrounds the branches of the flower-stalk in some 
erasses, in the manner of a cylindrical. sheath. This 
is chielly to be observed in the genus Cyperus, 
fig, 291. ‘The margin of it is various, and affords 
ihe following diversities. 
Ie Deeded (truncata), when. the mar gin 1s 
even, as if it had been cut off. 
2. Oblique, (obligua), when the margin -is some- 
what lengthened out on one side. 
3. Foliaceous, (foliacea), when. the roll ends im a 
short, linear, or subulated leaf. 
It is further distinguished according to its surface, 
as in § 6. | 
§ 3 Oe The 
