Maritime. Belonging to the sea or the neighbourhood of the sea.
Massula. A group of microspores contained in a special envelope, as in Azolla.
Membranous, Membranaceous. Thin, soft, and translucent, like a membrane.
Mericarp. A name applied to one of the two carpels composing the fruit of Umbelliferæ.
Mesocarp. The middle layer of a fruit or pericarp.
Micropyle. The opening or mark in the integument of a seed indicating the position of the foramen of the ovule.
Microspore. The smaller kind of spore in vascular cryptogams.
Midrib. The central and principal nerve of a leaf.
Monadelphous. Having the stamens all united by their filaments into a column or tube.
Monandrous. Having a single stamen.
Moniliform. Resembllng a necklace or string of beads; constricted at regular intervals.
Monochlamydeous. Applied to those plants whose flowers have only a single perianth.
Monocotyledons. Those plants whose embryo has but one cotyledon or seed-lobe.
Monœcious. Having the stamens and pistils in separate flowers, but borne on the same plant.
Monopetalous. Gamopetalous; having all the petals united by their edges.
Monophyllous. (1.) One-leaved, as an involucre composed of a single piece. (2.) Equivalent to "gamosepalous" or "gamopetalous."
Monotypic. Applied to a genus with but one species.
Mucilaginous. Composed of mucilage; sllmy.
Mucro. A sharp terminal point.
Mucronate. Possessing a short and sharp terminal point.
Mucronulate. Ending in a diminutive mucro.
Multifarious. Arranged in many vertical rows or ranks.
Multifid. Cleft into many lobes or segments.
Muricate, Muricated. Rough with short hard points.
Muriculate. Diminutive of "muricate"; minutely muricate.
Muticous. Blunt; without a point.
Naked. Bare; without its usual covering or appendages, as a stem without leaves, a flower without perianth.
Navicular. Boat-shaped.
Nectar. The sweet secretion within a flower; honey.
Nectariferous. Honey-bearing.
Nerve. A simple or unbranched vein or slender rib.
Nerved. Having nerves or slender ribs.
Netted. Reticulated; net-veined.
Node. That part of a stem or branch from which leaves or branches are given off; the knots in the stems of grasses.
Nodose. Knotty or knobby; usually apphed to roots.
Nut. A hard indehiscent one-celled fruit.
Nutlet. A small nut; sometimes applied to the hard seed-like divisions of the fruit of Labiatæ.
Obconic. Shaped like an inverted cone.
Obcordate. Inversely heart-shaped, the notch being uppermost.
Oblique. (1.) Unequal-sided. (2.) Slanting; turned to one side.
Oblong. Considerably longer than broad, with parallel sides and rounded ends.
Obovate. Inversely ovate, the broadest part towards the apex.
Obovoid. A solid with an obovate outline.
Obsolete. Wanting or imperfectly developed.
