CAMPANULACEJ3 



167 



purple ; lamina 3-3'5 mm. long, 2-3 mm. wide, with indistinct 

 venation ; petiole slightly flattened above, the two sometimes slightly 

 alternate, 2-5-4 mm. long. 



Stem herbaceous, erect, at least in the seedling stage, terete, 

 striated, glabrous with the exception of some lines of hairs running 

 down from the decurrent bases of the leaves, stained with purple ; 

 1st internode 3-4 mm. long ; 2nd 2-3 mm. 



Leaves glabrous, with ascending nerves running into the teeth 

 or lobes ; petiole flattened or slightly channelled above, rough on 

 the back and margin. 



No. 1. Rhomboid, obtuse, obsoletely dentate at the margin. 



No. 2. Larger, similar, but with five blunt teeth. 



No. 3. Shallowly five-lobed. 



Campanula bononiensis, L. (fig. 493). 



Primary root vertical, small, slender, colourless, with a few 

 fibres. 



Hypocotyl 2-2*5 cm. long, ? mm. thick, 

 terete, glabrous, nearly colourless. 



Cotyledons nearly equal, about 7 mm. 

 long, 3-4 mm. wide, shortly stalked, ovate, 

 cuneate at the base, obtusely emarginate, ob- 

 scurely nerved, entire, glabrous, light green. 



Stem herbaceous, erect, terete, hairy ; 

 1st internode 3'5 mm. long. 



Leaves simple, radical and cauline, 

 alternate, exstipulate, petiolate, hairy on 

 both sides, but chiefly on the margins and 

 the nerves beneath ; petioles channelled 

 above, convex beneath, dilated and am- 

 plexicaul at the base, coarsely hairy. 



No. 1. Spathulate-obovate, entire. 



No. 2. Oval, obtuse, tapering to the base, 

 obsoletely crenate-serrate. 



Nos. 3 and 4. Obovate, obtuse, serrate- 

 crenate, subreticulately veined. 



Campanula gummifera, Willd. 



Hypocotyl glabrous, 6-10 mm. long, light 

 green or colourless. 



Cotyledons ovate-rotund, slightly emarginate, obtuse, petiolate, 

 glabrous, light green, indistinctly pinnatinerved like the leaves. 



Stem with primary internodes undeveloped. 



FIG. 493. 



Campanula bononie 

 Nat. size. 



