186 THE INDIANA WEED BOOK. 



Spikelet. — A little spike. 



Spreading. — Nearly prostrate on the ground. 



Stamen. — See. p. 37. 



Sterile. — Without seeds or spores. 



Stigma. — See p. 39. 



Stipules. — Appendages borne at the hase of the leaf stalk. 



Stipulate. — Bearing stipules. 



Style. — The narrowed top of the ovary. 



Succulent. — Soft and juicy; fleshy. 



Superior. — Said of the ovary when free from calyx. 



Suture. — A line of splitting or opening. 



Terminal. — Borne on the end of the stem or branch. 



Terete. — Circular in cross section. 



Truncate. — Cut square off. 



Tuber. — A short thick underground stem. 



Tubercle. — A wart-like grain or projection. 



Umbel. — See p. 41. 



Umbellet. — A small or secondary umbel. 



Utricle. — An achene or one-seeded fruit with a loose outer covering. 



Whorl. — A circle of three or more leaves or other organs arising from 



the same level. 

 Wing. — A thin expansion of a seed or stem. 



