72 



ON SEEDLINGS 



acuminate piece between each petiole, soon becoming dry, brown, 

 and scarious. 



Stem erect, and in the seedling stage at least having ridges 

 running downwards from the base of the interpetiolar stipules. 



Leaves opposite, decussate, alternately incurvinerved, subcori- 

 aceous, shining, deep green above, paler beneath, shortly petiolate ; 



stipules interpetiolar, sub- 

 scarious. 



First and second pairs of 

 leaves ovate, obtuse, entire. 



Rubia cordifolia, L. (fig. 

 488). 



Primary root tapering 

 downwards, flexuose, with 

 numerous lateral rootlets, 

 orange -red. 



Hypocotyl erect, terete, 

 glabrous, minutely scaberu- 

 lous, yellowish, 3-3*5 cm. 

 long. 



Cotyledons ovate, obtuse, 

 entire, trinerved from the base 

 or sometimes five-nerved, with 

 the two stronger laterals in- 

 curved and uniting with the 

 midrib near the apex of the 

 lamina, reticulate, glabrous, 

 petiolate, light green or stained 

 with dull red ; lamina 1-4-1-65 

 cm. long, 9-10-5 mm. wide ; 

 petiole semiterete, channelled 

 above, minutely pubescent at 

 the edges, or scaberulous, 

 glandular at the base and 

 slightly connate, 4-5 mm. 

 long. 



Stem erect in the seedling 



stage, ultimately climbing, herbaceous, rather acutely quadrangular, 



with transparent cartilaginous edges, glabrous, shining, green ; 1st 



internode 2-2-5 cm. long. 



Leaves opposite (described in ' Genera Plantarum ' as in whorls 



of four, rarely six), three- to five-nerved like the cotyledons, ob- 



FIG 437. Psychotria sp. Nat. size. 



