Appendix VI. 
Glossary. 
A- (or an-), a prefix in words of Greek 
derivation, the a privative, having a 
negative signification and denoting 
the absence of some organ or quality. 
Aberrant. Deviating from the estab- 
lished rule or type. 
Abnormal. Contrary to rule; deviating 
from the normal or usual. 
Abortion. The suppression or imper- 
fect development of any part. 
Abortive. Imperfectly developed. 
Abrupt, abruptly. Indicating a sudden 
transition or termination; abruptly 
pinnate, pinnate without a terminal 
leaflet. 
Acaulescent. Stemless or apparently so. 
Acecrescent. Enlarging in size with 
age, as the calyx of some plants 
after the flowering period. 
Accumbent cotyledons. Having an 
edge against or towards the radicle. 
Acerose. Needle-shaped, as a pine-leaf. 
Acheniwm. See Akene. 
Achlamydeous. Without perianth. 
Acicular. Needle- or bristle-shaped; 
more slender than acerose. 
Acinaciform. Scymetar-shaped, 
Acotyledon. A plant whose embryo 
is without cotyledons, as Cuscuta; 
applied also to cryptogams as plants 
without seed or embryo. 
Acrogenous. 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. 
Adherent. Union of dissimalar parts, 
as when the calyx-tube is jointed 
to the ovary. 
Adnate. United; used properly of the 
surfaces of different organs, as of 
calyx and ovary. 
Adpressed. See Appressed. 
Adventive. Accidentally present. 
Aestivation. The arrangement of 
leaves or of the parts of the 
perianth in the bud. 
Afoliate. Having no leaves. 
Aggregated. Crowded together, but 
not coherent. 
Akene; Achenium. A dry hard in- 
dehiscent l-celled and _ 1-seeded 
seed-like fruit. 
Ala, p). Alae. A wing, or sometimes 
an axil; in mosses, applied to the 
basal lobes or auricles of the leaves. 
Alar. In the axils or forks; also 
belonging to the wings or auricles. 
Alate. Winged, or having expansions 
like wings; as sometimes on a stem 
or petiole, or on the fruits or seeds. 
Albumen. The nutritive material of 
thé 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. 
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 abnormal form. 
Amphitropous. Applied to an inverted 
ovule or seed with the hilum lateral. 
