Fornix, fornices (pi.). Small arched scales in the throat of a corolla. 



Fovea (pi. Foveae) . A depression or pit, as in the upper surface of the leaf base 

 in Isoetes, that contains the sporangium; the seat of the pollinium in orchids. 



Fractiflex. Bending alternately and sharply in opposite directions; zigzag. 



Free. Neither attached to a member of the same whorl nor to a member of an- 

 other whorl. 



Free-central. Said of placentation when the seeds are attached to a column which 

 arises from the base and is not otherwise attached to the ovary wall (fig. 789). 



Frond. Leaf of a fern, including the stipe and blade. 



Fruit. The matured pistil or pistils and their accessory structures, bearing the ri- 

 pened seeds. 



Fruticose. Shrubby; shrublike. 



Fugacious. Falling soon after maturing, as do flowers or flower parts. 



Funiculus. The stalk which connects the ovule to the placenta. 



Funnelform. Having the shape of a funnel; said of corolla or calyx. 



Furfuraceous. Scurfy; covered with branlike scales. 



Fusiform. Tapering at both ends; term applied to any structure. 



Galea. That part of an irregular sympetalous corolla (usually the upper lip) that 



is extended as a spur or helmet (fig. 706) . 

 Gametophyte. The gamete-producing form of the plant (as in ferns) contrasted 



with the spore-producing form of "sporophyte." 

 Gamopetalous. Corolla with petals united. Same as sympetalous and monopetal- 



ous. 

 Gamosepalous. Calyx with sepals united. 

 Geminate hair. Pair of hairs from a common base (fig. 786). 

 Genus, (pi. genera). The natural group containing distinct species; a group of 



one or more related species. 

 Gibbous. Said of a calyx or corolla tube or segment which has a distended, 



rounded swelling on one side. 

 Glabrous. Without pubescence of any kind. 

 Gladiate. Flat, straight or slightly curved, with acute apex and approximately 



parallel edges; ensiform; swordlike. 

 Gland. Any special secreting organ; (as commonly employed) any regularly oc- 

 curring, anomalous, small protuberance anywhere on the plant (fig. 629). 

 Glandular. Bearing glands or having any glandular secretion. 

 Glaucous. Having a frosted or whitish waxy appearance from a waxy bloom or 



powdery coating. 

 Globose. Shaped like a globe or sphere. 

 Glochidia. A barbed hair or process. 

 Glochidiate. Having barbs. 



Glomerate. Gathered in compact groups; said of flowers occurring in small clus- 

 ters. 



Glomerule. A small cluster of flowers consisting usually of a compacted cyme. 



Glume. A member of a pair of bracts (often chaffy) subtending the spikelet of 

 the grasses (fig. 131). 



Glutinous. Sticky. 



Graduated. Said of phyllaries when the outer ones comprising the involucre are 

 successively shorter than the inner ones. 



Grain. The seed or seedlike fruit of a member of the grass family; a small, hard, 

 often superficial structure having the appearance of a grain, such as the callous 

 grain in Rumex (fig. 400). 



1715 



