VEINt 



..1. In our description of individual forms, we shall select only the most i-emark- 

 al)lc, leaving others for explanation in the Glossary. 



The most obvious arrangement is that which is founded npon the modes of the 

 velning ; but it should be premised that ditferent forms of venation often give rise 

 to the same outline. 



232. Of FEATHER-VEINED leavcs, the following (jorms depend 

 on the length of the veinlets m relation to each other, and to the 

 mil! vein.) If the middle veailets are longer than the rest, the leaf 

 will be 



1, ^rbicular (roundish), as in Pyrola rotundifolia.^) 



FIG. 29. — Figures of feather- veined leaves. The numbers refer to paragraphs, a, deheta 

 Seaf of Populus. "^ 



2. {Elliptical (oval), as in Lespedeza prostrata? or 



2/ Oblong (narrow-oval). Ex. Arenaria lateriflora.) 



If the lower veinlets are longer than the rest, the leaf will be 



A. [Ovate (egg-shaped), as in the Mitchella repens,ior 



5. ^anceolatc (lance-shaped), narrow, and tapering to each 

 end. Ex. sweet-wilham. ■ 



When the vehis are most developed towards the summit of 

 (he leaf, it becomes 



6. Obovate (inversely egg-shaped), as in the walnut; or 



7. Spathulate (shaped like a spathula), as in the daisyj 

 Again, if the lowest veinlets are longest, sending ofFveinulets 



backwards, the leaf will be 



8. (Cordate (heart-shaped), like the ova.te fcrm, with a hollow 

 (sinus) at the base, as in the lilac.^ 



9. fAiiriculate, ha\T.ng ear-shaped lobes at the base. Ex, 

 sage. ) 



