GLOSSARY. 



Normal. According to rule or standard ; not 



varying from the type. 

 Numerous. Indefinite in number. 

 Nut. A hard indehiscent one-seeded fruit, 



usually resulting from a compound ovary. 

 Nutlet. A small nut ; also applied to the hard 



seedlike divisions of the fruit of the Labiate, 



Verbena, etc. 



Ob-. A Latin prefix usually signifying inver- 

 sion, or the reverse of the primary word. 



Obcompressed. Flattened contrary to the direc- 

 tion of the sides, dorsally, instead of laterally. 



Obconical. Resembling an inverted cone. 



Obcordnte. Inverted cordate, the lobes directed 

 outward. 



Oblanceolate. Inverted lanceolate, with the 

 broadest part toward the apex. 



Oblique. Turned to one side ; unequally sided. 



Oblong. Considerably longer than broad and 

 with nearly parallel sides. 



Obovatc. Inverted ovate, the broader part to- 

 ward the apex. 



Obovoid. Inverted egg-shaped, the broader part 

 above. 



Obtuse. Blunt or rounded at the end. 



Obversely. In a reverse manner. 



Ochraceous. Ochre-color, light yellow with a 

 tinge of brown. 



Ochroleucous. Yellowish white. 



Ocreate, or Ochreate. Furnished with an ocrea, 

 a tubular stipule sheathing the stem. 



-Oid (-aides). A Greek termination signifying 

 resemblance. 



Opaque. Dull, not shining. 



Operculate. Provided with an operculum. 



Operculum. A lid, separating by a transverse 

 line of dehiscence. 



Opposite. Standing against or facing each other, 

 as a stamen against a petal, or two leaves at 

 the same node. 



Orbicular. Circular or nearly so. 



Order. A principal group next above the genus 

 in rank, and including related genera more or 

 less distinguished from others by certain com- 

 mon characters. 



Ordinal. Relating to orders. 



Organ. Any part of a plant concerned in its 

 growth and welfare, having a special object 

 to serve and more or less essential. 



Orthotropous. Applied to an ovule or seed that 

 is straight and attached immediately by its 

 base. 



Osseous. Bony. 



Oval. Broadly elliptical. 



Ovary. The dilated portion of the pistil, bearing 

 and containing the ovules. 



Ovate. Shaped like the longitudinal outline of 

 an egg, the broader portion toward the base ; 

 also egg-shaped and applied to solids. 



Ovoid. Egg-shaped. 



Ovule. A rudimentary organ which after im- 

 pregnation becomes a seed. 



Ovuli/erous. Bearing ovules. 



Palate. A protrusion of the lip of a bilabiate 

 corolla. 



Palea. A chaff or chaffy bract ; in grasses, the 



two inner bracts of the flower. 

 Paleaceous. Chaffy or furnished with chaff. 

 Palet. The same as palea, used especially of 



grasses. 

 Palmate. Of leaves, compound with the leaflets 



radiating from the summit of the petiole. 

 Palmately. In a palmate manner. 

 Palmatifid. Palmately cleft or divided. 

 Pandnrate. See Fiddle-shaped. 

 Panicle. A loose irregularly branched inflores- 

 cence. 

 Panicled, Paniculate. After the manner of a 



panicle ; bearing a panicle. 

 Papilionaceous. Butterfly-like ; applied to the 

 peculiar irregular flower common in the Legu- 

 minosae. 



Papillose, Papillate. Bearing minute thick 

 nipple-shaped or somewhat elongated pro- 

 jections. 



Pappus. In Composite, the hairs, bristles, or 

 scales crowning the akene and taking the 

 place of a calyx. 



Papyraceous. Having the texture of paper. 

 Paraphyses. In mosses, the minute filiform 

 bodies which accompany the male and female 

 organs. 



Parasitic. Growing upon and deriving nourish- 

 ment from another plant. 

 Parenchyma. The soft cellular tissue of plants, 



as the green fleshy part of a leaf. 

 Parcnchymatous. Like or formed of parenchy- 

 ma ; also applied to cells narrower at the ends 

 and overlapping each other. 

 Parietal. Relating to or situate upon the walls 



of a cavity. 

 Paripinnate. Evenly or abruptly pinnate, the 



terminal odd leaflet wanting. 

 Parted. Cleft nearly to the base. 

 Partial. Secondary as distinguished from the 



principal and primary. 

 Partition. An inner wall or dissepiment. 

 Patelliform. Trencher-shaped, with the margin 



less raised than in Scutellifonn. 

 Patent. Widely spreading. 

 Patulous. Slightly or moderately spreading. 

 Pauciflorous. Few-flowered. 

 Pear-shaped. Obovoid or obconical with a some- 

 what tapering base and usually oblique or 

 unsymmetrical. 

 Pectinate. Comb-like : cleft with narrow closely 



set segments. 

 Pedate. Palmately divided or parted with the 



lateral divisions again 2-cleft. 

 Pedicel. The footstalk or support of a flower. 

 Pedicellate. Borne on a pedicel. 

 PeduncJe. A general or primary flower-stalk. 

 Pedunculate. Furnished with a peduncle. 

 Peltate. Shield-shaped ; flat and attached to its 



support by its lower surface. 

 Pendent. Hanging on its stalk or support. 

 Pendulous. Hanging nearly inverted from its 

 support ; of ovules, more or less drooping, as 

 distinct from suspended. 



Pcnicillale. Resembling a brush of fine hairs. 

 Pepo. A cucurbitaceous fruit. 

 Perennial. Persistent a series of years. 



