Spring Flora of Oklahoma 
217 
Scabrous—Rough. 
Scale—A highly modified dry leaf as in a winter bud; also the fleshy 
leaf bases or leaves of a bulb; a flat more or less membranous 
outgrowth from a leaf or stem. The leaf-like expansions on the 
gametophytes of mosses and liverworts. 
Scape—A leafless or nearly leafless stem, coming from an under¬ 
ground part and bearing a flower or flower cluster. 
Scapose—Having scapes or resembling scapes. 
Scorpioid—Having the axis of the inflorescence coiled to one side. 
Scurfy—Covered with scurf, minute membranous scales, as in Cheno- 
podium. 
Scarious—Thin, dry, and translucent, not green. 
Secund—Twisted or turned to one side. 
Seed—The matured and modified ovule with a dormant embryo. 
Segment—A division of a compound leaf or of a perianth. 
Sepal—One of the leaves of a calyx. 
Septicidal—A capsule which splits longitudinally through its parti¬ 
tions, thus dividing it into component carpels. 
Serrate—With teeth projecting forward. 
Serrulate—Finely serrate. 
Sessile—Without a stalk. 
Seta—The stem or stalk of a moss sporophyte. 
Setaceous—Bristle-like. 
Silicle—A silique not much longer than wide. 
Silique—An elongated two-valved capsular fruit with two parietal 
placentae. 
Sinuate—With strongly wavy margins. 
Sinus—The space between two lobes. 
Spadix—A fleshy spike-like inflorescence. 
Spathe—A bract subtending a spadix as in the Aroids. 
Spatulate—Widened at the top like a spatula. 
Spicate—Resembling a spike. 
Spike—An elongated inflorescence with sessile or nearly sessile 
flowers. 
Spikelet—A small spike; especially the ultimate flower-cluster of the 
inflorescence of grasses and sedges. 
Spine—A short thorn-like organ representing a leaf or part of a 
leaf in origin, as the spines on the leaves of the Christmas holly. 
Spinose—Beset with spines. 
Spinulose—With small sharp spines. 
Spreading—Diverging and nearly prostrate. 
Spur—A hollow projection from a floral organ. A sfiort stunted 
branch, not a thorn or a dwarf branch. 
Squarrose—With spreading or projecting parts. 
