xxviii INTRODUCTION TO BOTANY. 



head of an arrow, that is, triangular, hollowed at the base, with 

 angles at the hinder part ; for example, common arroKXi-head, 

 (sagittaria sagittifolia. See Plate, 45. 19. halbert-shajped, 

 (hastate,) like the head of a halbert, that is, triangular, 

 hollowed at the base, and on the sides, with the angles spread- 

 ing; for example, sheep's sorrel^ (rumex acetosella.) See 

 Plate, 46. 20. diamond-shaped, (rhomboid,) that is, appi'oach- 

 ing to a square-diamond : for example, blacJc poplar, (populus 

 ingYSi,) sti7iMng goose-foot, (chenopodium olidum.) 21. lohed, 

 that is, divided to the middle into parts distant from each 

 other, rounded at the margins ; which last circumstance distin- 

 guishes the lobed, from the cleft or cloven, (fissum,) see Plate, 

 51.)leaves maybetwo-lobed,three-lobed,&c. See Plate, 52. 22. 

 Jiddle, or violin-shaped (panduriform,) that is, oblong, broader 

 at the two extremities, and contracted in the middle; for ex- 

 ample, Jiddle-dock, (rumex pulcher.) 23. lyrate, or lyre- 

 shaped, that is, divided into several segments or jags, the lower 

 ones smaller and more distant, than the upper ones, which are 

 of course larger; for example, ye//otiy-rocZ:e/^5(barbarea vulgaris.) 

 See Plate, 48. 24. runcinate, (from runcina, a large i-aw.) 

 that is, cut into several cross, sharp jags, pointing backwards; 

 for example, dandelion, (leontodon taraxacum.) See Plate, 

 49. 25. hand-shaped, (palmate,) that is, divided beyond the 

 middle into several lobes, that are nearly equal ; for example, 

 common passion floioer, and red berried bryony, (bryonia 

 dioica. See Plate, 53. 26. imng-clejt, (pinnatifid,) that is, 

 deeply divided by oblong, transverse, horizontal jags, not 

 extending to the mid- rib. See Plate, 47. 27. doiihly, or 

 t\!oice xmng-clcff, (bipinnatifid,) that is, when the common leaf- 

 stalk has wing-cleft leaves on each side of it ; for example, 

 long, rough-headed poppy, (papaver Argemone.) 28. comb-liJce, 

 (pectinate,) a sort of wing-cleft leaf, in which the leaflets are 

 parallel and very narrow, that is, toothed like a comb ; for 

 example, com^noii iioater milfoil, (myriophyllum spicatum.) See 

 Plate, 50. 19. jagged, (laciniate,) variously divided into lobes, 

 and these again divided in an irregular manner ; for example, 

 long-stalJced crane's bill, (geranium columbinum.) See Plate, 63. 

 30. partite, that is, simple, but divided almost down to the base : 

 according to the number of divisions, the leaf may be — twice, 



