GLOSSARY 595. 



Involucre [involucrum). A group of bracts surrounding an inflorescence. 

 Involute {involutus). Rolled inward from the margins towards the midrib. 

 Irregular Flower {flos irregularis). A flower with unequally shaped or disposed per- 

 ianth-leaves. 



Jointed [articulatus) . Divided into portions which subsequently separate ; or separating 

 at the point of attachment. 



Laciniate [laciniatus) . Lacerated, i.e., slit into narrow and irregular segments. 

 Lanceolate (lanceolalus) . About 3 — 6 times as long as broad and ending in an angle or 



point. 

 Legume [legtimen). A one-celled fruit opening by two valves. 

 Ligulate (ligulatus). Strap-shaped, i.e., produced on one side into a long and narrow 



limb. 

 LiGULE (ligula). A strap-shaped body, especially the scale-like appendage on the inner 



side of certain leaves, usually between the sheath and the blade. 

 Limb (limbus). The upper, more or less expanded part of a perianth. 



Linear (linearis). Very narrow (many times as long as broad) with almost parallel edges. 

 Lip {labium). A part of a perianth formed of several united segments or of one large 



segment which is separated from the rest. 

 Lobe {lotus). Division of a leaf or a perianth, especially when short. 

 LoBED {lobatus). Shortly divided, the incisions not reaching to the middle. 

 LocuLiciDAL {loculicidus). Opening along the median line of the outer wall of the ovary- or 



fruit-cells (along the dorsal suture of the carpels). 

 Lyrate {lyratiis). Lyre-shaped, i.e., pinnately divided with a large and rounded terminal 



lobe and small lateral ones. 



Male Flower {flos masculus). A flower containing fertile (pollen-producing) stamens, but 



no fertile carpels. 

 Median {medianus) . Placed in the middle-line of a bilateral organ. 

 Mericarp {mericarpium) . Partial fruit, i.e., one of the parts into which a schizocarp 



separates. 

 Merous {merus). With the parts of the flower consisting of a certain number of divisions 



or leaves, e.g., dimerous =with the parts in twos. 

 Mesocarp {mesocarpium) . The intermediate layer of the pericarp. 

 Micropyle {micropyle) . The aperture in the coats of the ovule. 

 Monoecious {monoicus) . Unisexual and the flowers of both sexes on the same plant. 

 Mucronate (mttcronatus). Ending in a short bristle-like point (mucro). 

 Muticous {muticus). Without awns or spines. 



Naked (nudus). Not enveloped by a perianth or by carpels. 



Nerve {nervus). A vascular bundle in a leaf or leaf-like organ, usually appearing as a dark 

 or translucent Hne or a ridge projecting on the under surface. 



Net-veined {reticulatim venosus). With the lateral nerves irregulariy connected by a net- 

 work of small veins. 



Neuter (neuter). Without perfect sexual organs. 



Node (nodus). The usually knot-like part of the stem, where a leaf or a whorl of leaves are 

 inserted. 



Nut (nux). A dry and indehiscent fruit, especially one with a tliick and hard rind. 



Ob- (oh-). Reversedly. Thus obcordate or obovate = cordate or ovtite, the upper part 



the broader. 

 Oblong (oblongus). About 3—6 times as long as broad and rounded at the top. 

 Obtuse (obtusus). Blunt, i.e., narrowed, but not pointed at the apex. 

 Open Aestivation (aestivatio aperta). A form of aestivation in which the margins of the 



perianth-leaves do not touch one another. 

 Opposite (opposiius). Set against in pairs at the same level ; or placed one before another. 

 Oval (ovalis). About twice as long as broad and rounded at the top. 



