110 GLOSSARY 



Simple. In one piece ; as opposed to compound. 



Sinus. The variously shaped space or opening between the lobes of a leaf. 



Spathulate. Applied to leaves, petals, etc., broad at the apex, narrowed 



towards the base. 



Spike. Like a raceme, but with the individual flowers stalkless. 

 Stamens. The male parts of the flower bearing the anthers. 

 Stellate. Star-like ; usually applied to several hairs united at the base or 



radiating from one point. 

 Stigma. The summit of the pistil, usually viscid, for the reception of pollen, by 



means of which fertilisation is effected. 

 Stipules. Appendages, sometimes scale-like, sometimes leaf-like, at the base 



of leafstalks. 

 Stolon. A sucker-like branch springing from the base of the plant and rooting 



at the joints. 

 Stomata. Breathing pores in the surfaces of leaves ; apertures communicating 



with internal air cavities. 



Style. That part of the pistil connecting ovary and stigma 

 Terete. Circular in transverse section ; like a lead pencil. 

 Ternate. Arranged in threes ; applied to leaves. 

 Trifoliolate. Composed of three leaflets, e.g. leaf of Laburnum. 

 Truncate. Ending abruptly, as if cut off. 

 Umbel. An inflorescence in which a number of stalked flowers are clustered 



at the end of a common stalk. 

 Unisexual. Of one sex only, as opposed to hermaphrodite, bisexual and 



perfect. 

 Veins. Ramifications of fibro-vascular bundles proceeding from the midrib 



and traversing the blade of a leaf. 

 Whorl. Applied to flowers or leaves borne in a circle round a stalk or 



branchlet 



