126 



ON SEEDLINGS 



Stem herbaceous, annual, erect, terete, glabrous, green and shin- 

 ing ; 1st internode 2-2'5 cm. long ; 2nd 1-5-1-8 cm. 



Leaves as in last species, connate and sheathing at the base, 

 bright green and glabrous, entire. 



First pair linear, obtuse, entire, flattened above, slightly broader 

 , above the middle, resembling the cotyledons. 



Second pair linear, obtuse, flattened above, entire. 



Third pair much broader, linear, obtuse, slightly channelled 

 above, entire. 



Lasthenia obtusifolia, Cass., var. Bridgesii. 



Achene obovate-oblong, suddenly narrowed to the base, com- 

 pressed, slightly keeled on one side, glabrous, 3-3*5 mm. long by 1-25- 

 1-5 mm. wide about or above the middle. 



Seed conforming to the shape of the achene. 



Embryo conforming to the shape of the seed ; cotyledons 



spathulate-obovate, blunt or slightly emarginate at the apex ; 



radicle conical, nearly as long as the cotyledons. The cotyledons 



after germination are linear or spathulate-linear, a shape attained 



by elongation after germination. 



Tagetes patnla, L. (fig. 467). 



Primary root tapering, flexuose 

 colourless, with many fleshy, colourless, 

 flexuose, fibrous rootlets, annual. 



Hypocotyl erect, terete, deep dull 

 purple, closely striate with scabrid lines 

 of papillae-like hairs, 1-5-2 cm. long. 



Cotyledons narrowly spathulate, sub- 

 fleshy, pale green above, paler beneath, 

 with a prominent midrib and a sub- 

 marginal row of brownish glands ; petiole 

 slightly furrowed above, scabrous be- 

 neath, 6 mm. long ; limb oblong-obtuse, 

 glabrous, T3 cm. long, 4 mm. wide. 



Stem herbaceous, annual, terete, gla- 

 brous, dull purple ; early, internodes 

 very short. 



Leaves simple, pinnatisect, cauline, 

 opposite, sessile, glabrous, with a sub- 

 marginal line of brownish glands on the lobes or segments. 



First and second pairs much alike ; basal segments very small, 

 spathulate, acutely tri-dentate or -fid ; middle segments lanceo- 



FIG. 467. Tagetes patula. 

 Nat. size. 



