GLOSSARY OF SPECIAL TERMS. 



IIOI 



positae, bearing 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. 



Rent form. Kidney-shaped. 



Repand. With a somewhat wavy margin. 



Reticulate. Arranged as a network. 



Retrose. Turned backward or down- 

 ward. 



Retuse. With a shallow notch at the end. 



Revolute. Rolled backward. 



Rhachis. See Rachis. 



Rhizome. See Rootstock. 



Root stock. A subterranean stem, or part 

 of one. 



Ringent. The gaping mouth of a two- 

 lipped corolla. 



Rostellum. Beak of the style in Orchids. 



Rostrate. With a beak. 



Rosulate. Like a rosette. 



Rotate. With a flat round corollalimb. 



Rugose. Wrinkled. 



Runcinate. Sharply pinnatifid, or in 

 cised, 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 vesti- 

 gial leaf. 



Scape. A leafless or nearly leafless stem 

 or peduncle, arising from a subterra- 

 nean 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, or in 

 the beginning of growth, unrolling in 

 expanding. 



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 winch splits 

 longitudinally into and through its 

 dissepiments. 



Serrate. With teeth projecting forward. 



Serrulate. Diminutive of serrate; ser- 

 rate with small teeth. 



Sessile. Without a stalk. 



Setaceous. Bristle-like. 



Setose. Bristly. 



Silicle. A silique much longer than wide. 



Silique. An elongated two-valved cap- 



sular 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 (Sori). 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 sporanges. 

 Spikelet. Diminutive of spike; espe- 

 cially applied to flower-clusters of 



grasses and sedges. 

 Spinose. With spines, or similar to 



spines. 



Spinule. 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. 

 Sporophyte. 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 project- 

 ing 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, 



l>earing the leaves, in some genera of 



Pinaceae. 



S erile. Without spores, or without seed. 

 Stigma. The summit or side of the 



