374 ON SEEDLINGS 



lower part entire, pubescent all over (as is the case with the whole 

 plant above ground), rather thin, penninerved and reticulate, of a 

 dark metallic green above, slightly paler beneath. 



Stem with short internodes, herbaceous, terete, pubescent. 



Leaves simple, cauline, opposite, decussate, exstipulate, petiolate, 

 thin, dentate, alternately penninerved ; nerves incurving, reticulate, 

 pubescent all over. 



First pair like the cotyledons only larger, and showing transition 

 to the cordate form. 



Second pair cordate, acute, wavy at the margin, dentate. 



Third pair cordate, equal and regular, acute, finely dentate, alter- 

 nately penninerved, reticulate. 



LABIATE. 



Benth. et Hook. Gen. PI. ii. 1160. 



Fruit and Seed. The ovary is superior, syncarpous and 

 four-partite to the base, more rarely shortly four-fid or -lobed 

 beyond the middle. It consists of two carpels with their 

 marginal and dorsal sutures so inflected as to form two pairs of 

 one-celled cavities. The style is central and gynobasic. The 

 ovules are solitary in each cell, and with few exceptions erect 

 and anatropous. The fruit is most often included in the 

 persistent calyx and consists of four lobes or nutlets or fewer 

 by abortion ; and each nutlet encloses a single seed and is 

 indehiscent. The nutlets are dry, crustaceous or hard, rarely 

 fleshy or drupaceous, smooth, tuberculate, or roughly reticu- 

 late, rarely surrounded with a wing-like appendage, and 

 attached near the base by a small oblique or lateral areola to 

 that part of the ovary bearing the style. The seed conforms 

 to the interior of the nutlet and is attached by the very base 

 or laterally near the base to the placenta, and is rarely in- 

 curved the testa is membranous. Endosperm is scanty or 

 altogether wanting. The embryo again conforms to the seed 

 and has flat or plano-convex, slightly fleshy cotyledons parallel 

 or rarely transverse to the axis of the fruit. The radicle is 

 short, inferior and straight, or rarely incurved with incumbent 

 or recumbent cotyledons. 



