578 ON SEEDLINGS 



cotyledon has become proportionately much shorter and narrower 

 than the lower part, and is inconspicuously and minutely pubescent ; 

 lower part very broad with three to five shallow crenatures on each 

 side, pubescent all over the upper surface ; under surface purple, or 

 by transmitted light almost green and slightly suffused with purple ; 

 midrib distinct to the apex. Hypocotyl densely pubescent. Petioles 

 elongated, semiterete, channelled above, densely pubescent. First 

 two leaves opposite, oblong-ovate, obtuse, with a distinct midrib but 

 indistinct, incurved lateral nerves, minutely glandular-pubescent all 

 over the upper surface. 



Lopezia coronata, Andr. 



Primary root tapering downwards, with fibrous lateral rootlets. 



Hypocotyl erect, subquadrangular, glabrous or with two rows of 

 hairs, one on each side, reddish, l'S-2'5 cm. long. 



Cotyledons ovate-oblong, obtuse, rather unequal, obsoletely or 

 shallowly trilobed, petiolate, glabrous, green, one-nerved as far as 

 the middle, after that with no apparent venation ; petioles reddish, 

 shorter than the cotyledons, deeply furrowed on the upper face. 



Stem erect, square, herbaceous ; 1st and 2nd internodes about 

 1 mm. long. 



First leaves simple, cauline, opposite, petiolate, exstipulate, ovate- 

 oblong, acute, serrate, glabrous, green, pinnatinerved ; petioles 

 short, furrowed on the upper face. 



LOASE^. 



Benth. et Hook. Gen. PL i. 801. 



Fruit and Seed. The ovary is inferior, rarely half-superior, 

 one- very rarely two- or three- celled, with parietal placentas, 

 and few or numerous or indefinite anatropous ovules sus- 

 pended from the apex of the cell or from parietal placentas, and 

 arranged in one or many series. The fruit is capsular, often 

 ribbed with the ribs straight or spirally twisted, dehiscing at 

 the apex with three to five valves or longitudinally with three 

 to ten openings or slits and few- or many-seeded. The seeds 

 are generally minute, oblong or variously angled, in Mentzelia 

 angled, flattened, or even winged ; the testa is membranous or 

 thickened and subcrustaceous, or sometimes loose and reticu- 



