GLOSSARY OF SPECIAL TERMS. 



Acaulescent. With stem subterra- 

 nean, or nearly so. 



Accumbent. Cotyledons with mar- 

 gins folded against the hypocotyl. 



Achene. A dry one-seeded indehis- 

 cent fruit with the pericarp tightly 

 fitting around the seed. 



Acicular. Needle-shaped. 



Acuminate. Gradually tapering to 

 the apex. 



Acute. Sharp-pointed. 



Adnate. An organ adhering to a 

 contiguous differing one; an anther 

 attached longitudinally to the end 

 of the filament. 



Adventive. Not indigenous, but ap- 

 parently becoming naturalized. 



Albumen. See Endosperm<. 



Alliaceous. Onion-like, in aspect or 

 odor. 



Alopecuroid. Eesembling a foxtail. 



Alternate. Not opposite; with a 

 single leaf at each node. 



Alveolate. Like honeycomb; closely 

 pitted. 



Ament. A spike of imperfect flow- 

 ers subtended by scarious bracts, 

 as in the willows. 



Amphibious. At times inhabiting 

 the water. 



Amphitropous. Term applied to the 

 partly inverted ovule. 



Amplexicaul. Clasping the stem, or 

 other axis. 



Anastomosing. Connecting so as to 

 form a well-defined network. 



Anatropous. Applied to an inverted 

 ovule with the micropyle very near 

 the hilum. 



Androgynous. Flower-clusters having 

 staminate and pistillate flowers. 



Angiospermous. Pertaining to the 

 Angiospermae ; bearing seeds within 

 a pericarp.. 



Annulate. Ring-shaped or showing 

 rings. 



Anther. The part of the stamen 

 which contains the pollen. 



Antherid (Antheridium). The male 

 organ of reproduction in Pterido- 

 phyta, Bryophyta and certain 

 Fungi and Algae. 



Anthesis. Period of flowering. 



Apetaloiis. Without a corolla. 



Apical. At the top, or referring to 

 the top. 



Apiculate. With a minute pointed 

 tip. 



Aplanospore. A non-motile and non- 

 sexual cell, formed endogenously 

 or by rejuvenescence and set free 

 for propagation. 



Apothecium (Apothecia). The disk- 

 shaped organ bearing spore-sacs in 

 some lichens. 



Appressed. Lying against another 

 organ. 



Arborescent. Tree-like, in size or 

 shape. 



Archegone. The female reproduc- 

 tive organ in Pteridophyta and 

 Bryophyta. 



Areolate. Reticulated. 



Areolation. The system of meshes 

 in a network of veins. 



Areole. A mesh in a network of 

 veins. 



Aril. A fleshy organ growing about 

 the hilum. 



Arillate. Provided with an aril. 



Aristate. Tipped by an awn or 

 bristle. 



Aristulate. Diminutive of aristate. 



Ascending. Growing obliquely up- 

 ward, or upcurved. 



Ascus (Asci). A sac containing 

 spores. 



Asexual. Without sex. 



Assurgent. See Ascending. 



Auricled (Auriculate) . With basal, 

 ear-like lobes. 



Auxiliary cell. A specialized cell, in 

 certain Red Algae, in which a fer- 

 tilized egg or one of its descendant 

 nuclei finds lodgment and develops 

 into a cystocarp. 



Awn. A slender bristle-like organ. 



Axil. The point on a stem immedi- 

 ately above the base of a leaf. 



Axile. In the axis of an organ. 



Axillary. Borne at, or pertaining to, 

 an axil. 



Baccate. Berry-like. 



