_Zucc._ Zuccarini. _Zuccag._ Zuccagini. GLOSSARY AND INDEX, OR DICTIONARY OF THE PRINCIPAL TERMS IN DESCRIPTIVE BOTANY, COMBINED WITH AN INDEX. For the convenience of unclassical students, the commoner Latin and Greek words (or their equivalents in English form) which enter into the composition of botanical names, as well as of technical terms, are added to this Glossary. The numbers refer to pages. _A_, at the beginning of words of Greek derivation, commonly signifies a negative, or the absence of something; as apetalous, without petals; aphyllous, leafless, &c. In words beginning with a vowel, the prefix is _an_; as anantherous, destitute of anther. _Abnormal_, contrary to the usual or the natural structure. _Aboriginal_, original in the strictest sense; same as indigenous. _Abortive_, imperfectly formed, or rudimentary. _Abortion_, the imperfect formation or the non-formation of some part. _Abrupt_, suddenly terminating; as, for instance, _Abruptly pinnate_, pinnate without an odd leaflet at the end, 58. _Acantho-_, spiny. _Acaulescent_ (_acaulis_), apparently stemless; the proper stem, bearing the leaves and flowers, being very short or subterranean. _Accessory_, something additional; as _Accessory buds_, 30, 31; _Accessory fruits_, 118. _Accrescent_, growing larger after flowering. _Accrete_, grown to. _Accumbent_, lying against a thing. The cotyledons are accumbent when they lie with their edges against the radicle, 128. _Acephalous_, headless. _Acerose_, needle-shaped, as the leaves of Pines. _Acetabuliform_, saucer-shaped. _Achænium_, or _Achenium_ (plural _achenia_), a one-seeded, seed-like fruit, 120. _Achlamydeous_ (flower), without floral envelopes, 86. _Acicular_, needle-shaped; more slender than acerose. _Acinaciform_, scimitar-shaped, like some bean-pods. _Acines_, the separate grains of a fruit, such as the raspberry. _Acorn_, the nut of the Oak, 122. _Acotyledonous_, destitute of cotyledons or seed-leaves. _Acrogenous_, growing from the apex, as the stems of Ferns and Mosses. _Acrogens_, or _Acrogenous Plants_, a name for the vascular cryptogamous plants, 156. _Aculeate_, armed with prickles, i. e. _aculei_; as the Rose and Brier. _Aculeolate_, armed with small prickles, or slightly prickly. _Acuminate_, taper-pointed, 54. _Acute_, merely sharp-pointed, or ending in a point less than a right angle, 54. _Adelphous_ (stamens), joined in a fraternity (_adelphia_); see _monadelphous_, &c. _Aden_, Greek for gland. So _Adenophorous_, gland-bearing. _Adherent_, sticking to, or more commonly, growing fast to another body. _Adnate_, literally, growing fast to, born adherent, 95. The anther is adnate when fixed by its whole length to the filament or its prolongation, 101. _Adnation_, the state of being adnate, 94. _Adpressed_ or _appressed_, brought into contact with, but not united.