550 



GLOSSARY. 



Septifragal. Breaking away from the partitions 



on dehiscence ; terms applied to the valves of 



a loculicidal cajisnle. 



Septum. Any kind of partition dividing a cavity. 



Sericeous. SUky ; covered with soft straight ap- 



pressed hairs. 

 Series. A row, circle, or rank. 

 Serotinous. Produced late in the season. 

 Serraie. Having teeth directed forward, like 



the teeth of a saw. 

 Scrratiires. Teeth like those of a saw. 

 Serrulate. Finely serrate. 

 Sessile. Attached immediately to the point of 



support without footstalk. 

 Seta. A bristle. 

 Setaceous. Bristle-like. 

 Setigerous. Bristle-bearing. 

 Setose. Beset with bristles. 

 Sheath. A tubular envelope, investing a stem. 

 Sheathing. Enfolding like a sheath. 

 Shield-sJmped. Flattened and rounded or iwlygo- 



nal, and borne by a stalk attached to the 



under surface. 

 Shrub. A plant woody throughout, of less size 



than a tree. 

 Shrubby. Having the character of a shrub. 

 Sigmoid. Doubly curved, like the letter S, or 



the Greek sigmn, 2. 

 Silicle. A short cruciferous pod, not many 



times longer than wide. 

 Silique. The usually elongated pod in CruciferfE, 



having two valves separating from two parietal 



placentffi. 

 Silky. 8ee Sericeous. 

 Simple. Of one piece ; not compound. 

 Sinistrorse. Turned to the left, as seen from 



the outside ; but often used in the opposite 



sense. 

 Sinuate. With a strongly wavy margin. 

 Sinuous. Flexuose ; curving back and forth. 

 Sinus. A depression, either angular or rounded, 



separating lobes or segments. 

 Smooth. Not rough ; sometimes used as equiv- 

 alent to glabrous. 

 Sorus, pi. Sori. In ferns, a cluster of sporangia. 

 Spadix. A spike with usually a thickened 



fleshy rhachis and subtended by a spathe. 

 Span. The distance between the extremiti* of 



tlie thumb and little finger when extended ; 



about nine inches. 

 Spa.rse. Thinly scattered. 

 Sjxilhaceous. "Bearing or resembling a spathe. 

 Spaihe. One or more clasping and often sheath- 

 ing bracts inclosing a flower cluster or inflo- 

 rescence and mostly colored. 

 Spatulate. Narrowly attenuate downward from 



an abruptly rounded sunnnit. 

 Species. A group of things of the same kind, 



having essentially the same characters. 

 SjKcific. That which relates to or defines a 



species. 

 Spicate. In spikes or resembling a spike. 

 Spike. Resembling a raceme but the flowers 



sessile or very nearly so. 

 Spikclct. A secondary spike; in grasses, the 



flowcMS subtended by a conrmon pair of glumes. 

 Spindle-shuped. See Fusiform. 



Spine. A sharp woody or rigid outgrowth from 

 the stem, a modification of a branch, leaf or 

 stipule. 

 Spiuescenl. Ending in a spine or rigid point. 

 Spinose, Spiny. Furnished with or resembling 



spines. 

 Spiiiulosc. Having diminutive spines. 

 Sjnriflc.t. Tile microscopic spiral cells within the 

 hairs upon tlie seeds or akenes of some plants 

 (as CoUomia), which are discharged and un- 

 coil when wetted. 

 Sporangiu'oi. In the higher cryptogams, the 



case which contains the spores. 

 Spores. In cryptogams, the minute bodies 

 which are the result of fructification and 

 which correspond to some extent to the seeds 

 of phsenogams, though without embryo and 

 reproducing the jdant only indirectly. 

 Spur. A usually slender tubular i)rocess from 



some part of a flower, often nectariferous. 

 Squamose. Furnished with scales. 

 Squarrose. Roughened and jagged with projec- 

 tions spreading every way, as by the divari- 

 cately spreading ends of crowded leaves or 

 bracts. 

 Squarrulose. Diminutive of the last. 

 Stamen. The pollen -bearing organ of the flower, 

 consisting of an anther usually supported upon 

 a stalk or filament. 

 Stamineal. Relating to or consisting of the 



stamens. 

 Sta,n iidferous. Stamen-bearing. 

 Stirniiihiilliini. A sterile .stamen or something 



taldii;4 till- ]ilace of a stamen. 

 Stiiiiiliinl. 'I'lie broad upper petal of a papilio- 

 naceous flower. 

 Stellate. Star-shaped ; radiating in fine lines 



from a centre, like the rays of an asterisk. 

 Stem. The main axis of a jilant. 

 Slemless. AVithout manifest stem above ground. 

 Sterile. Barren ; not capable of producing seed ; 

 a sterile stamen is one not producing pollen. 

 Stigm.a. That portion of the pistil without 

 e])idermis through which the jiollen-tubes 

 effect entrance to the ovules, very variable in 

 shape and position. 

 Stigmatic. Belonging or relating to the stigma. 

 Stings. Stinging hairs, seated upon a gland 



which secretes an acrid liquid. 

 StiiK. The footstalk of a pistil raising it above 

 the receptacle ; in ferns, the naked stalk of 

 the frond. 

 Stipitate. Borne upon a stipe. 

 Stipulur. Belonging to stipules. 

 Stipulate. Possessing stipules. 

 Stipule. An appendage to the base of a petiole, 



very various in form and cliai"acter. 

 Slock. A caudex or rhizome ; the persistent 



base of an herbaceous perennial. 

 Stolon. A horizontal prostrate oUshoot from 



the base of a jilant. 

 Stohwifrrous. Bearing or propagating by 



stolons. 

 Stoiim, pi. Stomata. Microscopic openings or 

 "breathing-pores" in the ejddermis of leaves, 

 etc., allowing interchange between the outer 

 air and that within the leaf. 



