Glossary of Special Terms. 



Acaulescent. With stem subterranean, or nearly 

 so. 



Accumbent. Cotyledons with margins folded 

 against the hypocotyl. 



Achene. A dry one-seeded indehiscent fruit with 

 the pericarp tightly fitting around the seed. 



Aacular. Needle-shaped. 



Acuminate. Gradually tapering to the apex. 



Acute. Sharp pointed 



Adnate. An organ adhering to a contiguous dif- 

 fering one; an anther attached longitudinally 

 to the end of the filament. 



Adventive. Not indigenous, but apparently be- 

 coming naturalized. 



Albumen. See Endosperm. 



Alliaceous. Onion-like, in aspect or odor. 



Alternate. Not opposite; with a single leaf at 

 each node. 



Alveolate. Like honeycomb; closely pitted. 



Ament. A spike of imperfect flowers subtended 

 by scarious bracts, as in the willows. 



Amphibious. At times inhabiting the water. 



Amphitropous. Term applied to the partly in- 

 verted 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 stami- 

 nate and pistillate flowers ; in Carex, a spike 

 with upper flowers staminate and lower pistil- 

 late. 



Angiospermous. Pertaining to the Angio- 

 spermae; bearing seeds within a pericarp. 



Anther. The part of the stamen which contains 

 the pollen. 



Antherid. The male organ of reproduction in 

 Pteridophyta and Bryophyta. 



Anthesis. Period of flowering. 



Apetalous. Without a corolla. 



Aphyllopodic. In Carex, with lower leaves 

 bladeless or with rudimentary leaves only. 



Apical. At the top, or referring to the top. 



Apiculate. With a minute pointed tip. 



Appressed. Lying against another organ. 



Arborescent. Tree-like, in size or shape. 



Archegone. The female reproductive organ in 

 Pteridophyta and Bryophyta. 



Areolate. Reticulated. 



Areolation. The system of meshes in a net- 

 work 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 upward, or up- 

 curved. 



Asexual. Without sex. 



Assurgent. See Ascending. 



Auricled. (Auriculate) with basal ear-like lobes. 



Awn. A slender bristle-like organ. 



Axil. The point on a stem immediately above 

 the base of a leaf. 



Axile. In the axis of an organ. 



Axillary. Borne at, or pertaining to an axil. 



Baccate. Berry-like. 



Barbellate. Furnished with minute barbs. 



Basifixed. Attached by the base. 



Berry. A fruit with pericarp wholly pulpy. 



Bilabiate. With two lips. 



Bipinnate. Twice pinnate. 



Bipinnatifid. Twice pinnatifid. 



Blade. The flat expanded part of a leaf. 



Bract. A leaf, usually small, subtending a flower 



or flower-cluster, or a sporange. 

 Bracteate. With bracts. 

 Bracteolate. Having bractlets. 

 Bractlet. A secondary bract, borne on a pedicel, 



or immediately beneath a flower ; sometimes 



applied to minute bracts. 

 Bulb. A bud with fleshy scales, usually subter- 

 ranean. 

 Bulblet. A small bulb, especially those borne on 



leaves, or in their axils. 

 Bulbous. Similar to a bulb; bearing bulbs. 

 Caducous. Falling away very soon after devel- 

 opment. 

 Caespitose. Growing in tufts. 

 Callosity. A small, hard protuberance. 

 Callus. An extension of the inner scale of a 



grass spikelet; a protuberance. 

 Calyx. The outer of two series of floral leaves. 

 Campanulate. Bell-shaped. 

 Campylotropaus. Term applied to the curved 



ovule. 

 Cancellate. Reticulated, with the meshes sunken. 

 Canescent. With gray or hoary fine pubescence. 

 Canaliculate. Channelled; longitudinally 



grooved. 

 Capitate. Arranged in a head ; knob-like. 

 Capsular. Pertaining to or like a capsule. 

 Capsule. A dry fruit of two carpels or more, 



usually dehiscent by valves or teeth. 

 Carinate. Keeled ; with a longitudinal ridge. 

 Carpel. The modified leaf forming the ovary, or 



a part of a compound ovary. 

 Caruncle. An appendage to a seed at the hilum. 

 Carunculate. With a caruncle. 

 Caryopsis. The grain ; fruit of grasses, with a 



thin pericarp adherent to the seed. 

 Caudate. With a slender tail-like appendage. 

 Caudex. The persistent base of perennial herbs, 



usually only the part above ground. 

 Caudicle. Stalk of a pollen-mass in the Orchid 



and Milkweed Families. 

 Cauline. Pertaining to the stem. 

 Cell. A cavity of an anther or ovary. 

 Chaff. Thin dry scales. 

 Chalaza. The base of the ovule. 

 Chartaceous. Papery in texture. 

 Chlorophyll. Green coloring matter of plants. 

 Chlorophyllous. Containing chlorophyll. 

 Ciliate. Provided with marginal hairs. 

 Ciliolate. Minutely ciliate. 

 Cilium. A hair. 

 Cinereous. Ashy ; ash-colored. 

 Circinnate. Coiled downward from the apex. 

 Circumscissile. Transversely dehiscent, the top 



falling away as a lid. 

 Clavate. Club-shaped. 

 Cleistogamous. Flowers which do not open, but 



are pollinated from their own anthers. 

 Cleft. Cut about halfway to the midvein. 



