GLOSSARY 



A, as a prefix in compounds, usually signi- 

 fies a negative, or the absence of some- 

 thing; as, a-petalous, without petals; 

 a-phyllous, leafless, etc. If the word be- 

 gins with a vowel, the prefix is an; as, 

 an-antherous, destitute of an anther. 



Abnormal. Contrary to the usual structure. 



Abortive. Imperfectly formed or rudi- 

 mentary. 



Abruptly pinnate. Pinnate without an odd 

 leaflet at the end. 



Acaidescent. Apparently stemless; the 

 proper stem, bearing the leaves and 

 flowers, being very short or subterranean. 



Accrescent. Growing larger after flower- 

 ing, as the calyx of Physalis. 



Accumbent (embryo). Cotyledons with the 

 edges against the hypocotyl. 



Acerose. Needle-shaped, as the leaves of 

 pines. 



Achene. A small, dry, hard, 1-celled, 1- 

 seeded, indehiscent fruit. 



Achlamydeous (flower). Without floral en- 

 velopes. 



Acicular. Needle-shaped; more slender 

 than acerose. 



Acrogenous. Growing from the apex, as 

 the stems of ferns and mosses. 



Aculeate. Armed with prickles (aculei), as 

 the rose and brier. 



Aculeolate. Armed with small prickles, or 

 slightly prickly. 



Acuminate. Taper-pointed. 



Acute. Merely sharp-pointed, or ending in 

 a point less than a right angle. 



Adnate. United in growth; the anther is 

 adnate when fixed by its whole length to 

 ' the filament. 



Adscendent, Ascendent, Ascending. Rising 

 gradually upwards. 



Adsurgent, Assurgent. Same as adscendent, 

 etc. 



Adventitious. Out of the usual place. 



Adventive. Imperfectly naturalized. 



Aeguilateral. Equal-sided; opposed to ob- 

 lique (in foliar organs). 



Aestivation. The arrangement of parts in 

 a flower-bud. 



Ala (plural alae). Awing; the side-petal of 

 a papilionaceous corolla. 



Alate. Winged. 



Albumen. An old general name for nutri- 

 tive tissue in the seed. 



Alliaceous. Having the smell or taste of 

 garlic. 



Alpine. Belonging to high mountains 

 above the limit of forests. 



Alternate (leaves, branches, etc.). Occur- 

 ring singly at the nodes of the axis. 



Alveolate. Honeycomb-like, as the recep- 

 tacle of the cotton-thistle. 



Ament. Same as catkin. 



Amentaceous. Catkin-like, or catkin-bear- 

 ing. 



Amorphous. Without any definite form. 



Amphitropous (ovule or seed). Half- 

 inverted and straight, with the hilum 

 lateral. 



Amplexicaul (leaves). Clasping the axis by 

 the base. 



Ampullaceous. Swelling out like a bottle 

 or bladder. 



Anastomosing. Forming a net-work (anas- 

 tomosis), as the veins of leaves. 



Anatropous (ovule). Inverted and straight, 

 with the micropyle next the hilum. 



Ancipital. Two-edged, as the stem of 

 blue-eyed grass. 



Androecium. The whole set of stamens. 



Androgynous. Having both staminate and 

 pistillate flowers in the same inflores- 

 cence. 



Angiosperms. The great group of seed- 

 plants with ovules (and seeds) inclosed 

 by an ovary. 



Annual. Of only one year's duration. 

 Winter annual, a plant from autumn- 

 sown seed which blooms and fruits in 

 the following spring. 



Annular. In the form of a ring, or forming 

 a circle. 



Annulate. Marked by rings. 



Annulus. A ring, like that of the spore- 

 case of most ferns. 



Anterior, in the flower, is the side towards 

 the bracfr (external); while posterior is 

 the side towards the axis. 



Anther. The essential part of the stamen, 

 which contains the pollen. 



Antheriferous. Anther-bearing. 



Anthesis. The opening of the flower. 



Apetalous (flower). Without petals. 



Aphyllous. Destitute of leaves, at least of 

 green leaves. 



Apiculate. Tipped with a short and abrupt 

 point. 



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