GLOSSARY OF TERMS. 327 



Fluted Cylindrical but channelled vertically like a column. 



Follaceous Leafy. Applied to the Thallus, or stemless growths 

 of Ltchenes, Hepaticce and Algae, when the segments are 

 broad ; also to bracts when they resemble the leaves except 

 in being smaller. 



Fracture The transverse surface of a bark or root when 

 broken ; if not fibrous or in layers it is described as short. 



Qalbulus A fleshy fruit consisting of three fleshy bracts united 

 together, with naked seeds under each, i.e., having no proper 

 ovary, as in the Juniper fruit. The three lines at the top 

 indicate the lines of juncture of the bracts. The term is also 

 applied to the rounded woody cone of some species of 

 Cupressus, 



Glands Cells containing oily or mucilaginous secretions, some- 

 times forming a distinct receptacle as in the Eucalyptus 

 Leaves, and sometimes forming the terminal head of a hair 

 as in the Geranium, or they may be stalkless as in the Hop. 



Halberd-shaped or hastate Shaped like a halberd, as in the 

 leaf of Runtex Acetosella, 



Heartwood The central portion of a tree trunk, often filled 

 with a deposit of colouring matter or resin, as in Lignum 



VltCB. 



Hermaphrodite Having male and female organs, i.e., stamens 

 and pistil, in the same blossom. 



Hilum The scar on a seed indicating where it has been 

 attached by a stalk to the wall of the ovary ; this name is 

 also applied to the central spot in starch grains. 



Imbricated Overlapping like the tiles of a roof. 

 Imparipinnate A pinnate leaf having an odd leaf at the apex. 



Incise-serrate The term incised is applied when the teeth are 

 deeper at intervals. 



Indusium The membranous covering over the sori, or groups 

 of spore cases, of ferns. 



Inflorescence The arrangement of flowers in plants. 

 Internodes The intervals between the leaves on the stem. 



Interruptedly pinnate Having smaller leaflets between the 

 ordinary leaflets, as in Agrimony. 



Involucre A ring of bracts outside a flowerhead in the Com- 

 positcB. In the Umbellifcrce the basal ring is called the 

 general involucre, and the ring under the secondary umbels, 

 the partial involucre. 



Keeled Having a projecting line underneath, or formed like 

 the keel of a boat. 



Laminate Formed in thin layers. The name of lamina is also 

 given to the blade or flat part of a leaf. 



