402 



GLOSSARY. 



dorsal side of a leaf or scale; the 

 two anterior united petals in a 

 papilionaceous flower (Legumino- 

 sae). 



Lacerate. Irregularly cleft as if torn. 



Laciniate. Cut into narrow pointed 

 lobes. 



Lanate. Woolly. 



Lemma. A bract in a grass spikelet 

 which bears a flower in its axil. 



Lenticel. One of the pores in the 

 epidermis of a woody stem. 



Lenticular. Lentil-shaped, that is 

 with the shape of a double-convex 

 lens. 



Ligulate. Strap-shaped. 



Ligule. A thin often scarious pro- 

 jection from the summit of the leaf- 

 sheath in the grasses and similar 

 plants. 



Limb. The expanded part of a petal 

 or sepal. 



Lobed. Margin indented less than 

 half way to the midrib. 



Locule. One of the cavities or cells 

 of an ovary. 



Loculicidal. Dehiscing so that the 

 clefts open into the cavities of the 

 ovary. 



Lodicule. One of the tiny scales 

 sometimes found in a grass flower. 



Loment. A jointed legume, usually 

 constricted between the seeds. 



Lunate. Crescent-shaped or half- 

 moon-shaped. 



Lyrate. Pinnatifid with a large and 

 rounded terminal lobe and the 

 lower lobes small. 



Marcescent. Withering but persis- 

 tent. 



Megasporangium. The case in which 

 the megaspores are produced. 



Megaspore. One of the large spores 

 in certain fern allies and the seed 

 plants, which is stored with food 

 and which produces a female game- 

 tophyte. 



Membranaceous. Membrane-like; 

 thin, soft and more or less trans- 

 lucent. 



Microsporangium. The case in which 

 microspores are produced; a cell 

 of an anther. 



Microspore. One of the small spores 

 in certain fern-allies and the seed- 



plants, which produce the male 

 gametophyte; a pollen grain. 



Monadelphous. Stamens united all 

 in one cluster. 



Moniliform. Appearing like a string 

 of beads. 



Monoecious. With stamens and pis- 

 tils in separate flowers on the same 

 plant. 



Mucronate. Tipped with a short 

 small abrupt tip. 



Mucronulate. Slightly mucronate. 



Muricate. Rough with short hard 



points. 

 Muriculate. 



Very finely muricate. 



Narcotic. Numbing or sleep-pro- 

 ducing. 



Nectariferous. Producing nectar. 



Nectary. An organ or spot where 

 nectar is secreted. 



Nerve. A small slender usually un- 

 branched rib. 



Neutral. Without stamens or pistils. 



Node. The place in a stem where the 

 woody bundles fuse and where the 

 leaves and buds are normally pro- 

 duced. 



Nodulose. With little knots or knobs. 



Nut. A hard indehiscent one-celled 

 and one-seeded fruit, though usu- 

 ally developing from a compound 

 ovary. 



Nutlet. A tiny nut. 



Ob- Inverted. 



Obcompressed. Compressed dorso- 



ventrally instead of laterally. 

 Obsolete. Not evident. 

 Ochroleucous. Yellowish-white. 

 Ocrea. A tubular stipule (Poly- 



gonaceae). 

 Olivaceous. Olive-green. 

 Operculum. A lid; the cap of a cir- 



cumscissile capsule. 

 Orthotropous (ovule or seed). Erect, 



with the micropyle at the apex 



opposite the hilum. 



Palea. A delicate bract which en- 

 closes the grass flower and stands 

 opposite the lemma. 



Panicle. A loose irregularly com- 

 pound inflorescence with pedicelled 

 flowers. 



Paniculate. Borne in panicles; re- 

 sembling a panicle. 



