APPENDIX I GLOSSARY OF ORCHID TERMS ACAULESCENT Having no visible stem, or a very short one ACAULIS Having no stem ACCRETE Grown together ACICULAR Needlelike spine; pointed; bristle ACINACIFORM Scimitar-shaped. A "scimitar" is a type of curved sword you see in those 1,001 Arabian Nights type movies. I.E. curved-shaped. ACRANTHOUS Term applies to sympodial type orchids, referring to the annual portions of successive growth of the rhizome, each beginning with scaled-leaves, ending with an inflorescence. ACROPETAL Leaves and flowers developing successively (one after the other) on one axis so youngest is at the apex (top). ACTIVE INGREDIENT any material in a pesticide preparation which is responsible for the killing, suppression, or control of pests and diseases. ACULEATE prickle-shaped ACUMEN A tapering point ACUTE Distinctly and sharply pointed, but not drawn out ADNATION adj. Adnate Fusion of unlike parts, e.g. labellum with column; contrasted with connation ADUMBRAL Shady ADVENTITIOUS Applied to roots which do not arise from the radicle or its subdivisions, but from a node on the stem, etc AERIAL ROOTS Borne above potting surface AGAR "Agar" is just an easier way of saying the real name "agar agar" AGAR-AGAR Gelantinous substance obtained mostly as translucent strips or white powder from certain sea weeds; used as solidifying agent in culture media. ALATA Winged ALBA Flower with all segments white, but which may have some degree of yellow on the lip only ALBESCENT Becoming white or yellow ALBINISM Lack of color; deficient in pigment
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