Xvi GLOSSARY, 
K 
KEEL. See carina. 
KEELED (carinatus), in the shape of the keel of a boat, that is a sharp pro- 
jecting ridge, arising from a flat or concave central rib, as 
the glumes of grasses. 
KIDNEY-SHAPED (reniformis), resembling the figure of a kidney. 
KNEE-JOINTED (geniculatus), bent abruptly like a knee. 
KnottrepD (tortulosus), a cylindrical body, with an uneven surface, as the 
pod of Chelidonium, 
L. 
LaBELLuM, the lower lip of irregular flowers, as the Orchises. 
LaBIAtTeE (labium, a lip,) a term used to designate a monopetalous calyx or 
corolla, which is unequally divided into two parts, mostly 
called two lipped or bi-labiate. 
LaBtose, a corolla, resembling the labiate. 
LacEeMa (a hollow place), air cells, or cavities among the cellular structure 
of piants. 
LaceRrvs, torn, irregularly divided by deep incisions. 
LAcINIATED, when leaves are deeply divided. 
Laciniatus, slashed, divided by deep taper-pointed cut incisions. 
LacunosE (lacunosus), having numerous large deep depressions or exca- 
vations. 
Lzyicatus, polished, haying the appearance of a polished surface, 
Lzvis, smooth. 
LaMELLar, having two little plates at the point, as the style of many plants. 
Lamina, the thin expanded part of the leaf. 
Lanatus, woolly, covered with dense curled matted hairs, resembling wool, 
as the leaves of Verbascum Thapsus, &c. 
LANcEOLATE (lanceolutus), narrowly elliptical, tapering at each end, as the 
leaves of Plantago lanceolatus, &e. 
Laterat (lateralis), fixed on or near the side. 
Laxus, loose, of a soft cellular texture, as the pith of many plants, also 
when the leaves or branches are widely apart and spreading 
from each other they are called lax, an open spreading inflo- 
rescence with distant branches is lax. 
Lear, consists of two parts, its stalk or petiole, and its blade or lamina. 
LEAF BUDS, are the rudiments of young branches, and consist of imbricated 
scales, surrounding a minute cellular axis or growing point, 
which is in direct communication with the woody and 
cellular tissue of the stem. 
LEAFLET, the separate leaves of a compound leaf are leaflets. 
LEAF-STALK, or petiole, is that part of the leaf which connects the blade 
with the stem, it is mostly half cylindrical, and often chan- 
neled on the upper surface, not unfrequently it is dilated into 
a leafy expansion, and forms a sheath or vagina, and surrounds 
the stem, as in the grasses, 
LEATHERY. See coriaceous. 
