GLOSSARY. 



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

 tion, the a prionlivc, liaving a negative signifi- 

 cation and denoting the absence of some or- 

 gan or (juality. 

 Abnormal. Contrary to rule; deviating from 



tlie noniial or usual. 

 Abortion. The suppression or imperfect develop- 

 ment of any part. 

 Abortive. Imperfectly developed. 

 Abrupt, abniptf If. Indicating a sudden transi- 

 tion or termination ; abruptly piiuiatc, pin- 

 nate without a teiniinal leallet. 

 Acaulcscent. Stemless or apparently so. 

 Accumbent cotyledons. Having an edge against 



or towards tlie radicle. 

 Accrosc. Needlo-sliaped, as a pine-leaf. 

 Achcnium. See Aknic. 

 Achlamyileous. Without perianth. 

 Aciculiir. Needle- or bristle-shaped ; nion; 



slender than accrosc. 

 Aciiiaciform. Scymetar-shaped. 

 Acotylcdnii. A jilant whose embryo is without 

 cotyledons, as Cuscula ; applied also to cry[)- 

 togams as plants without seed or embryo. 

 Acroqcnous. 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. 

 Admte. United ; used properly of the surfaces 



of different organs, as of caly.x and ovary. 

 Adventivc. Accidentally present. 

 Estivation,. Tlie 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. Alee. A wing, or sometimes an axil ; 

 in mosses, ajiplied 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 tho 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. 

 Amphiga atria. In Hcpatice, small stipule-like 

 accessory leaves on the under siile of the stem. 

 Amphitropous. Applied to an inverted ovule or 



seed with the hilum hiter.d. 

 Amplexicaul. Of leaves, clasping the stem. 

 Analropous. Of an inverted ovule or seed with 



the rhaphe extending its whole length. 

 Ancipital. Two-edged. 

 Androtjijmus. Having both male and female 



flowers. 

 Angiospcrmous. Bearing seeds in a closed peri- 

 carp. 

 Annual. Of only one year's duration. 

 Annular. Having the form of a ring. 

 Annulus. In mosses, the ring of cells between 

 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 pollen. 

 Anthcridium. In cryptogams, the male organ 

 of inlloresccnce, corresponding to the anther. 

 Antherifcrous. Bearing antheis. 

 Antlierizoids. In cryptogams, the minute usually 

 ciliated organs developed by the antheridia, 

 corresponding to pollen-grains. 

 Apetalous. Having no corolla or inner perianth. 

 Apex. The tip or summit of a thing. 

 Aphyllous. Not bearing leaves. 

 Apical. At the apex. 

 Apiculatc. Abruptly terminated by a short 



point or tip. 

 Apophysis. In mosses, an enlargement of the 



pedicel at the base of the capsule. 

 Appendage. Something added or attached to an 



organ, but unessential to it. 

 Appresscd. Pressed close. 

 Apternus. Not winged. 

 Aquntic. Growing in water. 

 Arachnoid. Roseinbling cobweb. 

 Arborescent. Becoming a tree or tree-like. 

 Arehegonium. In mosses, the rudimentary or- 

 gan which develops into the fruit. 

 Arcuate. Arched ; bent like a bow. 

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

 lated surface. 



