32 



ON SEEDLINGS 



interior of the mericarp ; hilum and micropyle contiguous, basal 

 and superior. 



Endosperm in the mature seed copious, fleshy, white, or 

 nearly so. 



Embryo large for the size of the fruit and the Order, straight, 

 colourless ; cotyledons oblong, obtuse, entire, plano-convex, slightly 

 longer than the radicle, lying with their backs or their edges to the 

 axis of the fruit, or diagonally ; these positions seem to be taken 

 indifferently, and two of them frequently in the same cremocarp ; 

 radicle oblong-terete, suddenly tapering to an obtuse point, close to 

 the micropyle, but with a layer of endosperm surrounding it. 



FIG. 410. Carum Carvi, x 10. A, longitudinal section of fruit : St, stylo- 

 podium ; E, embryo ; PC, pericarp ; T, testa ; P, endosperm. B, trans- 

 verse section of fruit : V, vitta or oil canal ; Cs, cotyledons transversely 

 to th axis of fruit. C, transverse section of fruit : Cs, cotyledons at right 

 angles to the axis of fruit. D, transverse section of fruit : Cs, cotyledons, 

 obliquely to the axis of fruit. 



Ptychotis Ajowan, DC. (fig. 411). 



Cremocarp ovate, laterally compressed, covered especially on the 

 ridges with hardened protuberances or dried papillae, tipped by the 

 angled or knotty stylopodium and separating when mature into two 

 mericarps. Carpophore bifid. 



Mericarp ovoid with the commissural face the broadest, some- 

 what curved longitudinally ; five-ridged, with the ridges slender, 

 three dorsal and two on the edges of the ventral commissure, with 

 a solitary vitta between each ridge, one-celled, one-seeded, in- 

 dehiscent. 



Seed oblong, subterete, slightly flattened on the ventral aspect, 

 with a shallow, median, longitudinal ridge, closely conforming 



