GLOSSARY OF SPECIAL TERMS. 



1057 



Irregular. A flower in which one or 



more of the organs of the same series 



are unlike. 

 Labiate. Provided with a lip-like organ; 



belonging to the family Labiatae. 

 Ladniate. Cut into narrow lobes or 



segments. 

 Lanceolate. Considerably longer than 



broad, tapering upward from the 



middle or below; lance- shaped. 

 Latex. The milky sap of certain plants. 

 Leaflet. One of the divisions of a com- 

 pound leaf. 

 Legume. A simple dry fruit dehiscent 



along both sutures. 

 Lenticular. Lens-shaped. 

 Ligulate. Provided with or resembling 



a ligule. 

 Ligule. A strap-shaped organ, as the 



rays in Compositae. 

 Limb. The expanded part of a petal, 



sepal, or gamopetalous corolla. 

 Linear. Elongated and narrow with 



sides nearly parallel. 

 Lineolate. With fine or obscure lines. 

 Lobed. Divided to about the middle. 

 Lament. A jointed legume, usually 



constricted between the seeds. 

 Loculicidal. Applied to capsules which 



split longitudinally. 



Lodicules. Minute hyaline scales sub- 

 tending the flower in grasses. 

 Lunate. Crescent-shaped. 

 Lyrate. Pinnatifid, with the terminal 



lobe or segment considerably larger 



than the others. 

 Macrosporange. Sporange containing 



macrospores. 

 Macrospore. The larger of two kinds of 



spores borne by a plant, usually giving 



rise to a female prothallium. 

 Marcescent. Withering but remaining 



attached. 

 Medullary. Pertaining to the pith or 



medulla. 

 Mericarp. One of the carpels of the 



Umbelliferae. 

 Mesocarp. The middle layer of a 



pericarp. 

 Micropyle. Orifice of the ovule, and 



corresponding point on the seed. 

 Microsporange. Sporange containing 



microspores. 

 Microspore. The smaller of two kinds 



of spores borne by a plant, usually 



giving rise to a male prothallium; 



pollen-grain. 

 Mid-vein (Midrib). The central vein or 



rib of a leaf or other organ. 

 Monadelphous. Stamens united by their 



filaments. 



Monilifornt. Like a string of beads. 



Monoecious. Bearing stamens and pis- 

 tils on the same plant, but in different 

 flowers. 



Monstrous. Unusual or deformed. 



Mucronate. With a short sharp abrupt 

 tip. 



Mucromilate. Diminutive of mucronate. 



Muricate. Roughened with short hard 

 processes. 



Muticous. Pointless, or blunt. 



Naked. Lacking organs or parts which 

 are normally present in related spe- 

 cies or genera. 



Naturalized. Plants not indigenous to 

 the region, but so firmly established 

 as to have become part of the flora. 



Nectary. A sugar-secreting organ. 



Node. The junction of two internodes 

 of a stem or branch, often hard or 

 swollen, at which a leaf or leaves are 

 usually borne. 



Nodose. Similar to nodes or joints; 

 knotty. 



Nodulose. Diminutive of nodose. 



Nut. An indehiscent one-seeded fruit 

 with a hard or bony pericarp. 



Nutlet. Diminutive of nut. 



Ob cor date. Inversely heart-shaped. 



Oblanceolate. Inverse of lanceolate. 



Oblong. Longer than broad, with the 

 sides nearly parallel, or somewhat 

 curving. 



Obovate. Inversely ovate. 



Obovoid. Inversely ovoid. 



Obsolete. Not evident; gone, rudiment- 

 ary, or vestigial. 



Obtuse. Blunt, or rounded. 



Ochreae. The sheathing united stipules 

 of Polygonaceae. 



Ochreolae. The ochreae subtending 

 flowers in the Polygonaceae. 



Ochroleucous . Yellowish white. 



OSsphere. The cell of the archegone 

 which is fertilized by spermatozoids. 



Operculate. With an operculum. 



Operculum. A lid. 



Orbicular. Approximately circular in 

 outline. 



Orthotropoos. Term applied to the 

 straight ovule, having the hilum at 

 one end and the micropyle at the 

 other. 



Ovary. The ovule-bearing part of the 

 pistil. 



Ovate. In outline like a longitudinal 

 section of a hen's egg. 



Ovoid. Shaped like a hen's egg. 



Ovule. The macrosporange of flower- 

 ing plants, becoming the seed on 

 maturing. 



