GLOSSARY. 



Abortive. Sterile; reproductive parts 

 failing to develop. 



Acaulescent. Stemless or apparently 

 so, or with the stem underground. 



Acerose. Needle-shaped ; with a sharp 

 rigid point. 



Acrid. Sharp and harsh to the taste. 



Adnate. United, especially where 

 different organs are fused. 



Adventive. Coming from a different 

 region and not thoroughly natur- 

 alized. 



A kene. A dry, one-celled, one-seeded, 

 indehiscent fruit. 



Alveolate. Resembling a honeycomb. 



Ament. A catkin; a scaly spike. 



Amphitropous (ovule or seed). Half- 

 inverted and straight but with a 

 lateral hilum. 



Ampliate. Abruptly expanded. 



Anastomose. To connect by cross- 

 veins and form a network. 



Anatropous (ovule or seed). In- 

 verted and straight with the mi- 

 cropyle next to the hilum. 



Androgynous. Having both stami- 

 nate and pistillate flowers. 



Annular. In the form of a ring. 



Annulus. A ring, especially the 

 ring of thick-walled cells on a fern 

 sporangium. 



Anthesis. The period of full bloom 

 of a flower. 



Apiculate. Ending in a short pointed 

 tip. 



Appressed. Lying close and flat 

 against something. 



Arachnoid. Cobwebby. 



Arcuate. Curved in the form of a 

 bow. 



Aristate. Tipped with a stiff short 

 bristle. 



Atomiferous. Bearing minute scat- 

 tered granules. 



Auricle. An ear-shaped appendage. 



Awn. A bristle-like terminal or 

 dorsal appendage. 



Barbellate. Minutely barbed. 

 Bifid. Two-cleft. 



Bilabiate. Two-lipped. 

 Biternate. Twice-ternate. 

 Bract. A modified reduced leaf oc- 

 curring in the inflorescence. 

 Bracteate. Having bracts. 

 Bracteolate. Having small bracts. 



Callosity. A hardened thickening. 



Callus. A hard protuberance; in the 

 grasses, the tough often hairy 

 swelling at the base of the lemma or 

 palea. 



Calyculate. Having bracts around a 

 flower or head which imitate or 

 resemble a calyx. 



Campanulate. Bell-shaped, that is 

 cup-shaped with a broad base. 



Canescent. Hoary with a grayish 

 pubescence. 



Capillary. Hair-like. 



Capitate. Shaped like a head; col- 

 lected into a head. 



Carinate. With a keel. 



Carpel. A simple pistil or one of the 

 units of a compound pistil. 



Carpophore. The slender prolonga- 

 tion of the axis which bears the ripe 

 carpels in the Umbclliferae. 



Cartilaginous. Firm and tough, car- 

 tilage-like. 



Caryopsis. A grain, that is a seed- 

 like fruit with a thin wall adherent 

 to the single enclosed seed as in 

 the grasses. 



Caudex. The persistent base of an 

 otherwise annual herbaceous stem. 



Caudicula. The thread-like or strap- 

 shaped stalk of a pollinium. 



Caulicle. The stem-like part of an 

 embryo, the hypocotyl. 



Cauline. Pertaining to the stem; 

 on the stem. 



Cernuous. Nodding; slightly droop- 

 ing. 



Cespitose. Growing in tufts; forming 

 mats. 



Chaff. A small thin bract becoming 

 dry and membranous. 



Chartaceous. Papery. 



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