546 



ON SEEDLINGS 



Hypocotyl short and indis- 

 tinguishable from the root. 



Cotyledons minute, rhom- 

 boid, obtuse, glabrous, shortly 

 petiolate, bronze red ; lamina 

 1'5 mm. long, 1*25 mm. wide ; 

 petiole grooved above, 1 mm. 

 long. 



Stem herbaceous, erect, sub- 

 terete, grooved on two sides 

 from between the bases of the 

 petioles downwards to the axils 

 of the two lower leaves, coarsely 

 hairy, or glandular-hairy when 

 young, red ; 1st internode T5 

 mm. long ; 2nd 4 mm. ; 3rd 

 1-4 cm. ; 4th 2-05 cm. 



Leaves simple, cauline, op- 

 posite, decussate, petiolate, ex- 

 stipulate, coarsely and thinly 

 glandular-hairy on both sur- 

 faces, trinerved, with the lateral 

 nerves describing an ellipse, 

 bronze green above, deep red 

 and shining beneath ; petioles 

 channelled above, rounded on 

 the back, red, very thinly glan- 

 dular-hairy. 



First pair very small, 

 broadly ovate, obtuse, entire, 

 indistinctly trinerved. 



Second pair larger, similar. 



Third pair broadly ovate, 

 obtuse, minutely emarginate, 

 and minutely apiculate in the 

 notch when quite young, dis- 

 tantly serrulate. 



Fourth to sixth pairs ovate- 

 elliptic, obtuse, minutely emar- 

 ginate and apiculate in the 

 notch when young, serrulate. 



FIG. 852. Rhexia Mariana. Nat. size. 



