SCROPIIULARINEJ5 317 



Cotyledons rotund-ovate, about 5 mm. long including the 

 petiole. 



Stem with primary internodes but slightly developed. 



First leaves elliptic, subacute, entire, shortly petiolate, covered 

 with glandular hairs and ciliated. 



Paulownia imperialis, 1 Sieb. et Zucc. (fig. 558). 



Ilijpocotyl erect, terete, very short, glandular-pubescent, about 

 5 mm. long. 



Cotyledons transversely oval or rotund, petiolate, shallowly 

 emarginate, showing a midrib only, thinly glandular-pubescent or 

 glabrous, light green above, paler beneath ; lamina about 4'5 mm. 

 long, 5'5 mm. wide ; petiole flattened above or slightly grooved, 

 3-4 mm. long. 



Stem erect, terete, 

 densely glandular-pubes- 

 cent or shaggy, and almost 

 villous in a young state, 

 ultimately woody, forming 

 a tree ; 1st internode 5'5 

 mm. long; 2nd T15 cm.; 

 3rd 1 cm. 



Leaves simple, cauline, 

 opposite, exstipulate, peti- 

 olate, alternately ascend- 

 ingly incurvinerved, with 

 the nerves uniting at their 

 upper end and giving off 



no. OOB.- 



Half nat. siz 



teeth, reticulate, softly and 



densely glandular-hairy on both surfaces, deep green above, paler 

 beneath; petioles subterete, narrowly channelled above, densely 

 glandular-hairy and shaggy, tapering upwards from a stout base. 



First pair small, broadly ovate or rotund-ovate, obtuse, distantly 

 glandular-dentate. 



Second pair cordate, obtuse, irregularly glandular-dentate. 



Third pair much larger, cordate, subacute, dentate, with unequal- 

 sized teeth generally largest about the middle of the leaf, and tipped 

 with a glandular mucro. 



Leaves on vigorous young trees attain a length of twelve to 

 twenty-four inches exclusive of the petiole. 



1 The seed is figured by Tubeuf, Samen, Frilchte und Keimlinge, p. 74. 



i , . , ,-. i FIG. 558. Paulownia impenalis. 



branches into the marginal - 



