Vol. HI.] 



GLOSSARY. 



525 



Penicillate. With a tuft of hairs or hair-like 

 branches. 



Perfect. Flowers with both stamens and pistils. 



Perfoliate. Leaves so clasping the stem as to 

 appear as if pierced by it. 



Perianth. The modified floral leaves (sepals or 

 petals), regarded collectively. 



Pericarp. The wall of the fruit, or seed-vessel. 



Perigynium. The utricle enclosing the ovary 

 or achene in the genus Carex. 



Per igy nous. Borne on the perianth, around 

 the ovary. 



Peripheral. Pertaining to the periphery. 



Persistent. Organs remaining attached to those 

 bearing them after the growing period. 



Petal. One of the leaves of the corolla. 



Petaloid. Similar to petals; petal-like. 



Petiolate. With a petiole. 



Petiole. The stalk of the leaf. 



Phyllode. A bladeless petiole or rachis. 



Pilose. With long soft hairs. 



Pinna. A primary division of a pinnately com- 

 pound leaf. 



Pinnate. Leaves divided into leaflets or seg- 

 ments along a common axis. 



Pinnatifid. Pinnately cleft to the middle or 

 beyond. 



Pinnule. A division of a pinna. 



Pistil. The central organ of a flower containing 

 the macrosporanges (ovules). 



Pistillate. With pistils; and usually employed 

 in the sense of without stamens. 



Placenta. An ovule-bearing surface. 



Plicate. Folded into plaits, like a fan. 



Plumose. Resembling a plume or feather. 



Plumule. The rudimentary terminal bud of the 

 embryo. 



Pollen. Pollen-grain. See Microspore. 



Pollinia. The pollen-masses of the Orchid and 

 Milkweed Familes. 



Polygamous. Bearing both perfect and imper- 

 fect flowers. 



Polypetalous. With separate petals. 



Pome. The fleshy fruit of the Apple Family 



Procumbent . Trailing or lying on the ground. 



Prophylla. Bractlets. 



Prolhallium. The sexual generation of Pteri- 

 dophyta. 



Puberulent. With very short hairs. 



Pubescent. With hairs. 



Punctate. With translucent dots or pits. 



Pungent. With a sharp stiff tip. 



Pyriform. Pear-shaped. 



Raceme. An elongated determinate flower-clus- 

 ter with each flower pedicelled. 



Racemose. In racemes, or resembling a raceme. 



Rachilla. The axis of the spikelet in grasses. 



Rachis. The axis of a compound leaf, or of a 

 spike or raceme. 



Radiant. With the marginal flowers enlarged 

 and ray-like. 



Radiate. With ray-flowers; radiating. 



Radicle. The rudimentar3* stem of the em- 

 bryo; hypocotyl. 



Radicular. Pertaining to the radicle or hypo- 

 cotyl. 



Raphe {Rhaphe). The ridge connecting the hi- 

 lum and chalaza of an anatropous or amphi- 

 tropous ovule; the ridge on the sporocarp of 

 Mar si lea. 



Ray. One of the peduncles or branches of an um- 

 bel; the flat marginal flowers in Compositae. 



Receptacle. The end of the flower stalk, bear- 

 ing the floral organs, or, in Compositae, the 

 flowers; also, in some ferns, an axis bearing 

 sporanges. 



Recurved. Curved backward. 



Reflexed. Bent backward abruptly. 



Regular. Having the members of each part 

 alike in size and shape. 



Reniform. Kidney-shaped. 



Repand. With a somewhat wavy margin. 



Reticulate. Arranged as a network. 



Relrorse. Turned backward or downward. 



Retuse. With a shallow notch at the end. 



Rolled backward. 

 See Rachis. 



.See Root stock. 



A subterranean stem, or part of one. 

 The gaping mouth of a two-lipped 



Revolulc. 



Rhachis. 



Rhizome. 



Rootstock. 



Ringent. 

 corolla. 



Roslellum. Beak of the style in Orchids. 



Rostrate. With a beak. 



Rosulate. Like a rosette. 



Rotate. With a flat round corolla-limb. 



Rugose. Wrinkled. 



Runcinale. Sharply pinnatifid, or incised, the 

 lobes or segments turned backward. 



Sac. A pouch, especially the cavities of anthers. 



Saccate. With a pouch or sac. 



Sagittate. Like an arrow-head, with the lobes 

 turned downward. 



Samara. A simple indehiscent winged fruit. 



Saprophyte. A plant which grows on dead 

 organic matter. 



Scabrous. Rough. 



Scale. A minute, rudimentary or vestigial leaf. 



Scape. A leafless or nearly leafless stem or pe- 

 duncle, arising from a subterranean part of a 

 plant, bearing a flower or flower-cluster. 



Scapose. Having scapes, or resembling a scape. 



Scarious. Thin, dry, and translucent, not green. 



Scorpioid. Coiled up in the bud, unrolling in 

 growth. 



Secund. Borne along one side of an axis. 



Segment. A division of a leaf or fruit. 



Sepal. One of the leaves of a calyx. 



Septate. Provided with partitions. 



Septicidal. A capsule which splits longitudi- 

 nally into and through its dissepiments. 



Serrate. With teeth projecting forward. 



Serrulate. Diminutive of serrate; serrate with 

 small teeth. 



Sessile. Without a stalk. 



Setaceous. Bristle-like. 



Setose. Bristly. 



Silicle. A silique much longer than wide. 



Silique. An elongated two-valved capsular fruit, 

 with two parietal placentae, usually dehiscent. 



Sinuate. With strongly wavy margins. 



Sinuous. In form like the path of a snake. 



Sinus. The space between the lobes of a leaf. 



Sorus (Sort). A group or cluster of sporanges. 



Spadiceous. Like or pertaining to a spadix. 



Spadix. A fleshy spike of flowers. 



Spathaceous. Resembling a spathe. 



Spathe. A bract, usually more or less concave, 

 subtending a spadix. 



Spatulate. Shaped like a spatula; spoon-shaped. 



Spermatozoids. Cells developed in the antherid, 

 for the fertilization of the oosphere. 



Spicate. Arranged in a spike; like a spike. 



Spike. An elongated flower cluster or cluster of 

 sporanges, with sessile or nearly sessile flowers 

 or sporanees. 



Spikelet. Diminutive of spike; especially ap- 

 plied to flower-clusters of grasses and sedges. 



Sfiinose. With spines or similar to spines. 



St>inule. A small sharp projection. 



Spinulose. With small sharp processes or spines. 



Sporange. A sac containing spores. 



Spore. An asexual vegetative cell. 



Sporocarp. Organ containing sporanges or sori. 



Sporophyle. The asexual generation of plants. 



Spreading. Diverging nearly at right angles; 

 nearly prostrate. 



Spur. A hollow projection from a floral organ. 



Squarrose. With spreading or projecting parts. 



Stamen. The organ of a flower which bears the 

 microspores (pollen-grains). 



Staminodium. A sterile stamen, or other organ 

 in the position of a stamen. 



Standard. The upper, usually broad, petal of a 

 papilionaceous corolla. 



Stellate. Star-like. 



Sterigmata. The projections from twigs, bearing 

 the leaves in some genera of Pinaceae. 



Sterile. Without spores, or without seed. 



Stigma. The summit or side of the pistil to 

 which pollen-grains become attached. 



