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GLOSSARY. 



Megaspore. One of the large spores 

 in certain fern allies and the seed 

 plants, which is stored with food 

 and which produces a female 

 gametophyte. 



Membranaceous. Membrane-like; thin, 

 soft and more or less translucent. 



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-produc- 

 ing. 



Nectariferous. Producing nectar. 



Nectary. An organ or a 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 

 produced. 



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 (Polygon- 



ceae). 



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 

 ppposite the lemma. 



Panicle. A loose irregularly com- 

 pound inflorescence with pedicelled 

 flowers. 



Paniculate. Borne in panicles; re- 

 sembling a panicle. 



Papilionaceous. Butterfly-like, that 

 is having the upper petal enlarged 

 and spreading, the two lateral ones 

 small and oblique, and the two 

 anterior ones conniyent into a keel. 



Papillose. Having minute nipple-like 

 projections. 



Pappus. The modified calyx-limb 

 in the Compositae, composed of a 

 ring or a crown of hairs, chaff or 

 scales. 



Parasitic. Depending on another 

 living organism for its food-supply. 



Parted. Margin indented nearly but 

 not quite to the midrib. 



Pectinate. Pinnatifid, with narrow 

 close segments; comb-like. 



Pellucid. Clear, transparent. 



Peltate. Shield-shaped, with its stalk 

 attached near the center of the 

 dorsal surface. 



Pentamerous (5-merous). Five in 

 number. 



Penultimate. The next to the last. 



Pericarp. The matured ovary wall 

 forming a protective coat in the 

 fruit. 



Perigynium. The inflated sac which 

 encloses the ovary in Carex. 



Perigynous. Around the ovary; that 

 is, adnate to the perianth or to a 

 receptacle-cup. 



Petiolulate. Having a petiolule. 



Petiolule. The stalk of a leaflet. 



Pilose. With soft hairs. 



Pinnule. One of the smaller sub- 

 divisions of the primary divisions 

 of a pinnately compound leaf. 



Pistil. The organ in the flower which 

 produces the ovules and provides 

 for their pollination. 



Plumose. Having fine hairs like a 

 plume. 



Plumule. The growing-point or bud 

 of an embryo (epicotyl). 



