GLOSSARY 



617 



Masked. See personate. 



Megasporangium. The sporangium which 



contains megaspores. 



Megaspore. The larger spore of hetero- 

 sporous plants (club mosses, water ferns, 

 seed-plants). 



Membranaceous, Membranous. With the 

 texture of a membrane; thin and more or 

 less translucent. 

 Microsporangium. The sporangium which 



contains microspores. 



Microstore. The smaller spore of hetero- 

 sporous plants (club mosses, water ferns, 

 seed-plants). 



Midrib. The middle or main rib of a leaf. 

 Monadelphous. Stamens united by their 



filaments into one set. 



Moniliform. Necklace-shaped; a cylindri- 

 cal body enlarged at intervals. 

 Monocotyledonous (embryo). Having only 



one cotyledon. 

 Monoecious. With stamens and pistils in 



separate flowers on the same plant. 

 Monopetalous (flower). With united petals; 



see gamopetalous. 

 Monosepalous. With united sepals; same 



as gamosepalous. 

 Mucronate. Tipped with an abrupt short 



point. 



Mucronidate. Diminutive of mucronate. 

 Multi-, in compounds, means many. 

 Muricate. Beset with short and hard points. 

 Muticous. Pointless; beardless; unarmed. 



Napiform. Turnip-shaped. 



Naturalized. Introduced from a foreign 

 country, but growing wild and propa- 

 gating freely by seed. 



Nectariferous. Nectar-bearing; having a 

 nectary. 



Nectary. An organ which secretes nectar. 



Needle-shaped. Long, slender, and rigid, 

 like the leaves of pines. 



Nerve. A name for the ribs or veins of 

 foliar organs, especially when simple and 

 parallel. 



Node. A knot; the joints of a stem, from 

 which the leaves arise. 



Nodose. Knotty or knobby. 



Nodulose. Diminutive of nodose. 



Nut. A hard, mostly one-seeded, in- 

 dehiscent fruit, as a chestnut, butternut, 



Ob-, as a prefix, signifies inversion, as 

 follows: 



Obcompressed. Flattened the opposite of 

 the usual way. 



Obcordate. Heart-shaped with the broad 

 and notched end at the apex instead of 

 the base. 



Oblanceolate. Lance-shaped with the taper- 

 ing point downwards. 



Oblong. Two to four times as long as broad, 

 and more or less elliptical in outline. 



Obovate. Inversely ovate, the broad end 

 upward. 



Obtuse. Blunt or round at the end. 



Ochreate. See ocreate. 



Ochroleucous. Yellowish-white; dull cream- 

 color. 



Ocrea. A sheathing stipule. 



Ocreate. Having sheathing stipules. 



Octogynous. With eight pistils or styles. 



Offset. Short branch next the ground 

 which takes root. 



Operculate. Furnished with a lid or cover 

 (operculum), as the capsules of mosses. 



Opposite. Applied to leaves and branches 

 when an opposing pair occurs at each 

 node; to stamens when directly in front 

 of the petals. 



Orbicular, Orbiculate. Circular in outline or 

 nearly so. 



Oval. Broadly elliptical. 



Ovate. Shaped like the section of an egg 

 with the broader end downwards. 



Ovoid. A solid with an ovate section. 



Ovule. The body which becomes a seed 

 after fertilization; the megasporangium 

 of seed-plants. 



Palea (plural paleae}. Chaff; the inner 

 husk of grasses; the chaff or bracts on 

 the receptacle of many Compositae. 



Palmate. Applied to a leaf whose leaflets, 

 divisions, or main ribs all spread from 

 the apex of the petiole, like a hand with 

 outspread fingers. 



Palmately lobed, cleft, parted, divided, etc. 

 The varying depths of division of a 

 palmate leaf. 



Panduriform. Same as fiddle-shaped. 



Panicle (inflorescence). An open cluster 

 like a raceme, but more or less compound. 



Panicled, Paniculate. Arranged in panicles, 

 or like a panicle. 



Papilionaceous. Butterfly-shaped; applied 

 to such a corolla as that of the pea. 



Papilla (plural papillae). A little nipple- 

 shaped protuberance. 



Papillate, Papillose. Covered with papillae. 



Pappus. The modified calyx-limb in Com- 

 positae, forming a crown of very various 

 character at the summit of the achene. 



Parietal. Attached to the walls, as of the 

 ovary. 



Parted. Separated or cleft into parts al- 

 most to the base. 



Pectinate. Pinnatifid or pinnately divided 

 into narrow and close divisions, like 

 the teeth of a comb. 



Pedate. Like a bird's foot; palmate or 

 palmately cleft. 



Pedicel. The stalk of each particular 

 flower of a cluster. 



