GLOSSARY 



307 



Polypetalous With separate petals 



Pome A fleshy fruit with a core, as 

 the apple 



Prickle A sharp needle-like out- 

 growth of the bark 



Primary Of the first rank 



Propagation The process by which 

 new individuals arise or are pro- 

 duced without the use of seed 



Puberulent, puberulous Finely hairy 



Pubescent Hairy 



Pungent Sharp 



Pyriform Pear-shaped 



Raceme A somewhat elongated axis 

 bearing flowers with about equal 

 pedicels 



Racemose In a raceme 



Rachis The axis of a spike or of a 

 compound leaf 



Radiate Like the spokes of a wheel 



Ray One of the ribbon-like flowers 

 of the composites 



Receptacle The end of a flower stalk 

 bearing the flower parts, or in the 

 composites bearing the flowers 



Recurved Bent back 



Reflexed Bend down or back 



Regular Having the members of 

 each part alike in size and shape 



Reniform Kidney-shaped 



Resinous, resiniferous Bearing resin 



Reticulate Net-like 



Reticulation A net-like marking or 

 roughening 



Retrorse Turned downward or back- 

 ward 



Revolute With the margin rolled 

 back 



Rhizome An underground root-like 

 stem 



Rhomboid More or less diamond- 

 shaped 



Rootstock An underground stem 



Rostrate Beaked 



Rotate Flat and circular in outline; 

 wheel-shaped 



Rudimentary Imperfect; beginning 



Rugose Wrinkled, roughened 



Salver-form, salver-shaped With a 

 slender tube, abruptly widened into 

 a flat top 



Samara A winged fruit, as in the 

 maple and elm 



Scabrate, scabrous Rough 



Scale A minute leaf 



Scape A leafless flower-bearing stalk 

 arising from the ground 



Sclerenchyma Hard stone-like tis- 

 sue 



Scurfy With bran-like scales 

 Segment A part or division 

 Segregated Separated from 

 Semiherbaceous Partly herbaceous 

 Sepal One of the outer circle of 



flower parts, usually green, a divi- 

 sion of the calyx 

 Septicidal Splitting through or along 



the septa or cross partitions of the 



fruit 

 Serrate With teeth as in a saw 

 Serrulate Finely saw-toothed 

 Serration A tooth 

 Sessile Not stalked; seated 

 Sheath The part of a leaf or leaf 



base which clasps or encloses the 



stem 

 Shrub A woody plant, usually less 



than 20 feet tall 

 Simple Consisting of one part, not 



compound 

 Sinuate With wavy margin 

 Sinuous Wavy, twisted 

 Sinus A notch or bay 

 Spadix A fleshy axis bearing sessile 



flowers 

 Spathe A leaf-like structure more or 



less enclosing a flower cluster 

 Spatulate Spoon-shaped, shaped like 



a spatula 

 Species A group of like individuals, 



as white pine, bur oak, etc. 

 Spherical Ball-shaped 

 Spike An elongated axis bearing ses- 

 sile flowers 

 Spikelet A small few-flowered spike, 



the flower cluster of grasses and 



sedges 

 Spine A sharp woody outgrowth of 



the stem, a reduced leaf 

 Sporangium A spore-bearing sack 



or structure 

 Spray A feathery branch 

 Spur A hollow projection from a 



sepal or petal 

 Stamen The part of the flower which 



bears the pollen 

 Staminate With stamens but with- 

 out pistils 

 Staminoid A stamen which no long- 

 er produces pollen 

 Standard The large upper petal of 



the flower of the pea family 

 Stellate Star-shaped 

 Sterile Not producing seed; without 



pollen 

 Stigma The tip of the pistil which 



receives the pollen 

 Stipule A leaf-like part at the base 



of the stalk of the leaf 



