DIFFERENT KINDS OF SEEDS. 



X HE SEEDS present so great a diversity of appearance^ that they cannot, like the Calyx, 

 Corolla, or Pericarp, be grouped into distinct assemblages, but must be presented to the 

 reader individually, of which the following are some of the most striking examples. 



1. A DOUBLE SEED, EACH RESEMBLING A BOAT {Semen cliiplex, nav'iculcE foTmaiii reprcesentans), as 



in the umbelliferae. 



2. Kidney-shaped, with heptagon and pentagon cells (Reniforme, cellulis pentagonis et hepta- 



gonis), as in Poppy-seed {Semen Papaveris). 



3. Ovate {Ovatum)^ shaped like an egg, as in Eye-bright {Euphrasia). 



4. Globular {Globosum), as in the Pea {Pisum), and Coriander {Coriandrum) , 



5. Square {Tetragonum) , having four sides, as in Foxglove {Digitalis). 



6. Triangular {Triangulare) , having three sides, as in Tansy {Tanacetum). 



7. Cylindric {Oblongum)^ oblong, as in St. John's-wort {Hypericuni), 



8. Resembling a particular shell {Figuram conclice mentiens), as in Wood-sorrel {Oxalis), 



9. Ditto, as in Purslane {Portulaca). 



10. Ditto, as in Cinquefoil {Potentilla). 



11. Resembling the head of a monkey {Figuram cynocephali repr^esentans)^ as in the Cocoa-nut. 



12. A SINGLE crown {Corona simplex), as in Ragwort {Senecio). 



13. A double crown {Corona duplex), as in Holy Thistle {Centaurea Benedicta). 



14. A shuttle-cock {Corona pennacea), as in Dandelion {Leontodon), 



Terms applicable to the Seed. 



Aril {Arillus)^ the outer coat of the seed.... Eye {Hilum), an oblong scar, marking the 

 place where the seed was affixed by an umbilical cord to the seed-vessel. ...Heart {Corculum), 

 the rudiment of the young plant within the seed. ...Plume {Plumula), the ascending part of the 

 corcule, or infant stem. ...Radicle {Radicula), the descending part, or infant root. ...Cotyle- 

 dons {Cotyledones), the side-lobes, furnishing nourishment to the corculum.... Seminal leaves 

 {Folia Semifialia), the first leaves of the plantule, serving the office of cotyledons, or lobes.... 

 Pappus {Pappus), a feathery crown. ...Stipe {Stipes), a thread connecting the pappus to the 

 seed. 



