PAKALLEL-VEINED LEAVES. 



89 



18. Digitate (finger-shaped),, having narrower and deeper 

 segments than the pahnate, as hi the hemp, i 



19. Pedate (foot-shaped). The same as pahnate, except that 

 the tvi^o lateral lobes are themselves subdivided, as in the 

 peony and passion-flo\ver.\ 



20. Laciniate (gashed),/the veins and veinlets separate, as il 

 the blade were cut and gashed with scissors. Ex. Ranunculus.; 



21. Peltate (shield-hke), the veins radiating in all dhections, 

 and all connected by intei-venuig tissue. Tliis form is gener 

 aUy also orbicular, and appears to residt from the union of tlie 

 base-lobes. Ex. PodophyUum peltatimi, Tropeolum, Brasenia.) 



22. Reniform, broad-ovate, broad-cordate, &c.,/may also result 

 from the radiate veining.' 



234. The form of parallel-veined leaves is less diversified 

 than that of the preceding classes, being 



23. ienear, when the vehis (and fibres) are straight, as in the 

 grasses. Tliis form may also occur ua the feather-veined leaf ' 

 by an equal development of all the veinlets as in Linaria vul 

 garis, &c. - 



FIG. 31. — 23, 24, 25, figures of leaves with paraUel veins ; 2 — 10, margins of leaves. 



24. Oval, lanceolate, oblong, or some kindred form, when the 

 veins are cm-ved, as in Cajrex, Cypripedium, Orchis, &c., or it 

 may^be ' 



25. Cordate, when some of the lower veins are curved back- 

 wards and then upwards, as in Pontaderia, and eve^ sagittate, 

 when they are directed downwards at the base, as in the Sagit* 

 taria. ♦ 



