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GLOSSARY. 



Rugulose. Slightly wrinkled. 

 Runcinate. Sharply incised with the 



segments directed backwards. 

 Rupestrine. Growing among rocks. 



Saccate. Sac-shaped. 

 Sagittate. Arrow-shaped. 

 Salverform. Having a slender tube 



abruptly expanded into a flat limb. 

 Salient. Prominent. 

 Samara. An indehiscent winged fruit 

 • (Aceraceae). 

 Saprophytic. Depending on dead 



organic matter for its food. 

 Scaberulous. Minutely scabrous. 

 Scabrid. Minutely scabrous. 

 Scabrous. Covered with short hairs 



or points. 

 Scapose. Bearing or resembling a 



scape. 

 Scarious. Thin, dry, membrana- 

 ceous, not green. 

 ScuteUate. Plate-like. 

 Secund. One-sided. 

 Septicidal. Dehiscing through the 



partitions and between the cells. 

 Septifragal. Dehiscing into parts 



which break away from the parti- 

 tions. 

 Serratures. Serrations. 

 Serrulate. Finely serrate. 

 Setaceous. Bristle-like. 

 Setose. Beset with bristles. 

 Sheath. A tubular envelope like the 



lower part of the leaf in the grasses. 

 Silicle. A short silique (Cruciferae). 

 Silique. A long 2-celled slender pod 



{Cruciferae). 

 Sinuate. .Outline strongly wavy. 

 Sinus. The recess or indentation 



between two lobes. 

 Sordid. Dirty white. 

 Sorus. A cluster of spore-cases; a 



fruit-dot {Polypodiaceae). 

 Spathaceous. Spathe-like. 

 Spathe. A large petal-like bract 



enclosing an inflorescence. 

 Spatulate. Gradually narrowed 



downward from a rounded summit. 

 Spike. A simple inflorescence with 



the flowers sessile on a more or less 



elongated axis. 

 Spikelet. A small spike, especially 



the peculiarly specialized one in the 



grasses. 

 Spinescent. Becoming spiny. 

 Spinulose. With very small spines. 



Spiricle. A minute coiled thread 



found on some seeds. 

 Sporangium. A spore-case. 

 Sporocarp. A pod-like structure en- 

 closing the spore-cases {Marsilea- 



ceae) . 

 Spur. A hollow-sac or tubular ex- 

 tension of the calyx or corolla or 



both, usually nectariferous. 

 Stellate-pubescent. With star-shaped 



hairs. 

 Sterile. Incapable of producing; as a 



flower without a pistil or a stamen 



without an anther. 

 Stipel. A stipule-like organ at the 



base of a leaflet. 

 Stipitate. With a stalk. 

 Stolon. A runner or basal branch 



that tends to strike root. 

 Stoloniferous. Having stolons. 

 Striae. Minute longitudinal lines. 

 Striate. Marked with longitudinal 



lines or ridges. 

 Strigose. Covered with short stiff 



appressed hairs. 

 Strophiole. An appendage near the 



hilum on certain seeds. 

 Stylopodium. A disk-like expansion 



at the base of the style (TJmbelli- 



ferae). 

 Submersed. Growing under water. 

 Suffrutescent. Slightly or obscurely 



shrubby. 

 Sub- Somewhat or slightly. 

 Subulate. Awl-shaped. 

 Succulent. Juicy, fleshy. 

 Supra-axillary. Produced not in but 



above the leaf-axils. 

 Suture. The line of dehiscence. 

 Syngenesious. Stamens with united 



anthers but separate filaments. 



Tawny. Dull yellowish brown. 

 Tegule. One of the sepal-like bracts 

 surrounding the head in the Corn- 



Terete. Cylindrical or nearly so; not 

 compressed. 



Ternate. In threes. 



Tetradynamous. With four long and 

 two short stamens. 



Thallus. A plant body not differ- 

 entiated into root, stem and leaf. 



Thyrsoid. Resembling a thyrsus. 



Thyrsus. A contracted cylindrical or 

 ovoid and usually compact panicle. 



