LABIATE 



379 



Cotyledons oblong-rotund, obtuse, emarginate, slightly auricled 

 at the base, subfleshy, petiolate, glabrous, green, without any apparent 

 venation ; petioles hairy, short, shallowly channelled on the upper 

 side. 



Stem erect, square, pubescent ; 1st internode 3-5 mm. long. 



First leaves simple, cauline, opposite, decussate, shortly petiolate, 

 exstipulate, ovate, obtuse, crenate- serrate, 

 covered with hairs, green, pinnatinerved. 



Perilla nankinensis, Decne. (fig. 587). 



Primary root vertical, slender, grey, 

 with a few lateral fibres. 



Hypocotyl 2-3 cm. long, 1 mm. thick, 

 terete, pubescent, colourless. 



Cotyledons including petiole 1 cm. 

 long, 1 cm. wide, unequal, shortly stalked, 

 subreniform, obtuse, emarginate, other- 

 wise entire, obscurely nerved, pubescent, 

 dark green above, purplish beneath, flat, 

 not very thick or persistent. 



Stem erect, obtusely angular, sub- 

 striate, thinly pubescent, deep purplish- 

 red ; hairs deflexed or hooked back- 

 wards ; 1st internode 3'3-4 cm. long, 

 rather variable in length ; 2nd 4-6 mm. 



Leaves cauline, opposite, simple, ex- 

 stipulate, petiolate, sparsely hairy on 

 both surfaces and pubescent on the mid- 

 rib ; hairs thickened at the base, hyaline 

 above and tipped with violet. 



First pair rotund-ovate or elliptic, obtuse, obsoletely serrate- 

 crenate, penninerved, a deep black purple ; petiole flattened above, 

 convex beneath, pubescent on both surfaces. 



Second pair broadly rotund-ovate, obtuse, crenate-serrate, penni- 

 nerved, similar to the first pair except in the larger size and greater 

 breadth at the base. 



Monardella Pringlei, A. Gray. 



Hypocotyl short, erect, terete, minutely pubescent, 2-3 mm. 

 long, reddish-green. 



Cotyledons small, subrotund, emarginate, cordate at the base, 

 petiolate, glabrous except on the petioles, fleshy green, without any 

 apparent venation. 



FIG. 



87. Perilla nankinensis. 

 Half nat. size. 



