GLOSSARY OF BOTANICAL TERMS 



REFLEXED. Bent backward abruptly. 



REGULAR. Uniform in shape or structure. 



REPAND. With slightly uneven and somewhat sinuate margin. 



RETICULATE. In the form of a network. 



RETRORSE. Facing outward ; applied to stamens that face away from the 



pistil. 



RE VOLUTE. Rolled backwards. 

 ROOT. The underground part of a plant which supplies it with nourish. 



ment. 



ROSTRATE. Having a beak. 

 ROTATE. With a flat, circular, corolla limb. 

 SALVER-SHAPED. Having a slender tube abruptly expanded in to a flat limb 



or border. 



SAMARA. An indehiscent winged fruit. 

 SEED. The ripened ovule. 

 SECUND. Borne along one side of an axis. 

 SEGMENT. A division of a leaf or fruit. 

 SEPAL. One of the leaves of a calyx. 

 SERRATE. With teeth projecting forward. 

 SERRULATE. Diminutive of serrate. 

 SESSILE. Without a stalk. 



SILKY. Covered with close-pressed, soft and straight pubescence. 

 SIMPLE. As applied to leaves ; in one piece, undivided. 

 SINUATE. With wavy margins. 

 SINUS. The cleft between two lobes. 

 SMOOTH. Without irregularities ; destitute of hairs. 

 SPORT. A sudden variation from the normal type of structure. 

 SPECIES. A group of individuals which possess in common such a number 



of constant characters ihat they may be considered to be descended from 



a common ancestral form. 

 SPIKE. An elongated flower cluster. 



SPINE. A sharp woody or rigid outgrowth from the stem. 

 SPRAY. The ultimate division of a branch. 

 STAMEN. The organ of the flower that bears the pollen. 

 STANDARD. The upper dilated petal of a papilionaceous corolla. 

 STELLATE. Star-like. 



STERILE. Unproductive ; as a flower without pistil or stamen without an- 

 ther. 

 STIGMA. The summit or side of the pistil to which the pollen grains become 



attached. 



STIPULATE. With stipules. 

 STIPULE. Appendages at the base of a petiole, often adnate to it. 



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