180 



ON SEEDLINGS 



and in some cases at least unequal in size. The breadth is of 

 course due to their being folded longitudinally, as well as to 

 the comparatively large size of the seed and embryo. 



The cotyledons of a species of Capparis (fig. 183) from 

 Melbourne were large, foliaceous, shortly petiolate, ovate, 

 obtuse, alternately incurvinerved and reticulate, glabrous, 

 convex above, slightly unequal-sided, that is, the portion of 

 lamina on each side of the midrib was not of the same width. 

 They were evergreen and persisted for more than a year 

 on the plant. In the case of Cleome violacea they fall 

 away early. 



Cleome violacea, L. (fig. 180). 



Primary root tapering downwards, strongly tortuose, with a 

 few lateral roots, annual. 



Hypocotyl very short, stout, colourless, terete, subterranean, 

 tapering into the root. 



Cotyledons falling away early, slightly unequal, oblong or ovate- 

 oblong, obtuse, entire, petiolate ; petioles a little shorter than the 

 lamina. 



Stem erect, terete, herbaceous, annual, pale green, densely 

 glandular-pubescent; 1st internode 2-25 mm. long; 2nd hardly 

 developed ; 3rd 6 mm. long ; 4th 6 mm. ; 

 5th 9-5 mm. ; 6th 1-7 cm. ; 7th 1-6 cm. ; 

 8th 8-5 mm. ; 9th 1-16 cm. ; 10th 1 cm. ; 

 llth 1-1 cm. ; 12th 1-8 cm. ; 13th 1-1 

 cm.; 14th 1-35 cm.; 15th 1-5 cm.; 

 16th 1-5 cm.; 17th 1-1 cm.; 18th 7 mm.; 

 19th 4-5 mm. ; 20th 2 mm. 



Leaves compound, digitately trifoli- 

 ate, ultimately unifoliolate, cauline, al- 

 ternate (first two opposite), exstipulate, 

 petiolate, glandular-pubescent on both 

 surfaces, deep green above, glaucous be- 

 neath ; leaflets oblong-linear, obtuse or 

 subacute with a deeply channelled mid- 

 rib, very prominent beneath ; petioles 

 subterete, channelled on the upper side. 



Nos. 1 and 2. Small, trifoliolate ; leaflets subelliptic, tbe terminal 

 one largest. 



Nos. 3-6. Gradually larger, trifolioliate ; leaflets linear. 



No. 7. With one large terminal leaflet and a small lateral one. 



PIG. 180. Cleome violacea, : 



