414 ON SEEDLINGS 



Trigonella corniculata, L. 



Primary root a short colourless tap-root with a few fibrous 

 lateral rootlets. 



Hypocotyl herbaceous, 2 cm. long, -75 mm. thick, terete, glabrous, 

 greenish-grey. 



Cotyledons sessile and semi-amplexicaul, 1-25-1-5 cm. long, 

 3 mm. broad, linear-obovate, rounded at the apex, entire, with no 

 visible nerves, glabrous, stout but not thick, light green. 



Leaves pinnately trifoliolate (the first simple), cauline, alter- 

 nate, stipulate, petiolate, alternately and ascendingly penninerved 

 with the nerves running out into teeth, glabrous, pale or deep green 

 above, paler beneath ; petioles slender, glabrous ; stipules small, 

 adnate to the petiole with a free point. 



No. 1. With a long slender petiole, simple ; lamina 1 cm. long, 

 and as broad ; orbicular, mucronate, slightly denticulate, penni- 

 nerved, glabrous, thin, uneven, yellowish-green above, slightly paler 

 below ; petiole about 2 cm. long, '5 mm. broad, articulated near the 

 apex, glabrous. 



Trigonella Foemun-graecuin, L. 



Hypocotyl much stouter than in T. corniculata, light green or 

 colourless. 



Cotyledons oval-oblong, obtuse, entire, fleshy, petiolate, glabrous, 

 green, indistinctly pinnatinerved ; petiole thick, short, channelled on 

 the upper face, sheathing and connate at the base, suddenly becom- 

 ing thin near the base of the leaf, so that the cotyledon appears 

 articulated with it. 



Stem erect, terete, glabrous ; primary internodes but slightly 

 developed. 



Leaves trifoliolate, as in preceding species ; leaflets obovate, 

 shortly petiolulate, green, pinnatinerved. 



No. 1. Simple, slightly toothed, obovate, shallowly emarginate ; 

 petiole hairy, deeply channelled on the upper side, becoming sud- 

 denly thin near the base of the lamina with which it is articulated ; 

 stipules thin, rather large, hairy, ending in a point. 



Trigonella gladiata, Stev. 



Primary root long and tapering, colourless, fleshy, throwing off 

 numerous secondary rootlets towards its growing point, with occa- 

 sionally small white fleshy tubercles, annual. 



Hypocotyl subterranean, fleshy, tuberous, colourless, about 3 cm. 

 long. 



