GLOSSARY. 



A- (or an-), a prefix in words of Greek deriva- 

 tion, the a iJrioativc, liavinga negative signifi- 

 cation Jind denoting the absence of some or- 

 gan or qnality. 



Abiioriiial. Contrary to rale ; deviating from 

 the normal or usual. 



Abortion. The suppression or imperfect develop- 

 ment of any part. 



Abortive. Imperfectly developed. 



Abrupt, abruplUj. Indicating a sudden transi- 

 tion or termination ;. abruptly pinnate, pin- 

 nate without a terminal leatlet. 



Acaulescent. Stemless or apparently so. 



Accumbent cotyledons. Having an edge against 

 or towards the radicle. 



Acerosc. Needle-shaped, as a pine-leaf. 



Achenimn. See Akrnc. 



Achlamydeous. Without perianth. 



Aciculur. Needle- or bristle-shaped ; more 

 slender than acarosc. 



Aciiiaciform. Scymetar-shaped. 



Acotyledon. A plant whose embryo is without 

 cotyledons, as Cuscuta; applied also to cryp- 

 togams as plants without seed or embryo. 



Acrocfenous. Growing by terminal buds. 



Aculeate. Having sharp points or prickles. 



Acuminate. Tapering to a point. 



Acute. Sharp at the end, or at the edge or 

 margin. 



Adiiatc. United ; used properly of the surfaces 

 of different organs, as of calyx and ovary. 



Adveutivc. Accidentally present. 



^Estivation. The arrangement of leaves or of 

 the parts of the perianth in the bud. 



Aggregated. Crowded together, but not cohe- 

 rent. 



Akene ; Achenium. A dry hard indehiscent 

 1 -celled and 1 -seeded seed-like fruit. 



Ala, pi. Aloi. A wing, or sometimes an axil ; 

 in mosses, applied to the basal lobes or auri- 

 cles of the leaves. 



Alar. In the axils or forks ; also belonging to 

 the wings or auricles. 



Albumen. The nutritive material of the seed, 

 within its coats and exterior to the embryo. 



Albuminous. Provided with albumen. 



Alliaceous. Applied to the peculiar smell and 

 taste of garlic and onions. 



Alpine. Peculiar to high altitudes, above the 

 line of tree-growth. 



Alternate. Following one another at intervals, 

 as leaves upon a stem ; following by turns ; 

 not opposite ; intermediate. 



Alveolate. Honey-combed; deeply and closely 



pitted. 

 Ament. A unisexual spike with scaly bracts, 



as in the willow. 

 Amorphous. Without definite form ; of abnor- 

 mal form. 

 Ainpkigustria. In Hepatica;, small stipule-like 



accessory leaves on the under side of the stem. 

 Amphitropous. Applied to an inverted ovule or 



seed with the hilum Literal. 

 Amplexicaul. Of leaves, clasi>ing the stem. 

 Anatropous. Of an inverted ovule or seed with 



the rliaphe extending its whole length. 

 Ancipital. Two-edged. 

 Androgynous. Having both male and female 



flowers. 

 Angiospcrmous. Bearing seeds in a closed i^ri- 



carp. 

 Annual. Of only one year's duration. 

 Annular. Having the form of a ring. 

 Annulus. In mosses, the ring of cells l»fV\een 



the operculum and the orifice of the capsule. 

 Anterior. Equivalent to inferior or lower, in 



the sense of away from the axis and toward 



the bract. 

 Anther. That part of the stamen which contains 



the ])ollen. 

 Antheridiwm. In cryptogams, the male organ 



of inllorescence, corresi)onding to the antliur. 

 Anther if crous. Bearing anthers. 

 AnfJierizoids. In cryptogams, the minute usually 



ciliated organs developed by the antheridia, 



corresponding to pollen-grains. 

 Aprtalous. Having no corolla or inner perianth. 

 Apr.r. Tlie tip or summit of a thing. 

 Aphyllous. Not bearing leaves. 

 Apical. At the apex. 

 Apiculatc. Abruptly terminated Viy a sliort 



point or tip. 

 Apophysis. In mosses, an enlargement of the 



pedicel at the base of the capsule. 

 Appendage. Sometliing added or attached to an 



organ, but unessential to it. 

 Appressed. Pressed close. 

 Apterous. Not wingeil. 

 Aquatic. Growing in water. 

 Arachnoid. H"sembling cobwel). 

 Arborescent. Becoming a tree or tree-like. 

 Archegonium. In mosses, the rudimentary or- 

 gan which develops into the fruit. 

 Arcuate. Arched ; bent like a bow. 

 Areola, pi. Areola: The soaces in any reticu- 

 lated surface. 



