208 
Spring Flora of Oklahoma 
Articulate (teeth of peristome)—Marked by cross-bars. 
Ascending—Growing obliquely upward. 
Auricled, Auriculate—With ear-like lobes or appendages. 
Awn—A slender bristle-like organ. 
Axil—The point of a stem just above the base of the leaf. 
Axile—In the axis of an organ. 
Axillary bud—The bud in the axil of a leaf. 
Barbellate—With minute barbs. 
Basal (scale) cells—Oils at the base or insertion of a moss scale. 
Beak—The long point sometimes developed at the tip of the oper¬ 
culum of mosses. 
Berry—A fruit with a fleshy or pulpy pericarp. 
Biennial—Lasting two years. 
Bifid—Two-parted. 
Bifurcate—-Forked into two branches. 
Bilabiate—Two-lipped. 
Bilocular (2-locular)—having two cavities. 
Bi-pinnate—Twice pinnately compound. 
Bi-pinnatifid—Twice pinnatifid. 
Bisporangiate—Having both microsporangia and megasporangia; 
having both stamens and carpels. 
Blade—The expanded part of a leaf. 
Bloom—The white powdery layer on some plants. 
Bract—A small, rudimentary, or imperfectly developed leaf. 
Bracteate—Having bracts. 
Bractlet—A secondary bract, as one upon the pedicel of a flower. 
Bud scale—One of the scales in the winter bud of woody plants. 
Bulb—A bud with fleshy bracts or scales, usually subterranean. 
Bulblet—A small bulb, especially one borne upon the stem. 
Bundle scar—A scar in a leaf scar produced by a vascular bundle. 
Caducous—Falling away very soon after development. 
Csespitose—Growing in tufts. 
Calyx—The outer set of sterile floral leaves ; the whole set of se¬ 
pals. 
Cambium—The cylinder of growing cells in some stems. 
Campanulate—Bell-shaped. 
Canescent—With gray or hoary fine pubescence. 
Capitate—Arranged in a head. 
Capsule—A dry fruit of two or more carpels- usually dehiscent by 
valves or teeth. Sometimes applied to the sporangium of a 
bryophyte. • 
Carpel—The megasporophyll of a seed plant; the modified leaf bear¬ 
ing the ovules. 
Carpellate—Having only carpels, or carpellate flowers. 
