CAMPANULACE^E 



165 



shining, 6-7 mm. long, precisely similar to the first four pairs of 

 leaves. 



Stem herbaceous, erect, stout, glabrous, green ; internodes short ; 

 1st 4-5 mm. long ; 2nd 2*5-3 mm. 



Leaves simple, entire, cauline, alternate (lower opposite), exsti- 

 pulate, glabrous, slender at least in the young plant. 



Nos. 1-8 or 10. In decussate pairs, linear-subulate, acuminate, 

 and showing a midrib only. 



FIG. 490. Downingia pulchella. 

 Nat. size. 



FIG. 491. Colensoa physaloides. 

 Nat. size. 



Above this they are gradually broader, and three- to five-nerved 

 from the base. 



Colensoa physaloides, Hook,/, (fig. 491). 

 Primary root densely fibrous. 



Hypocotyl 5 mm. long, 1-5 mm. thick, terete, herbaceous, gla- 

 brous, usually purplish-green. 



Cotyledons 4-5 mm. long, 2-5-3 mm. wide, broadly petiolate, 



