320 ON SEEDLINGS 



are opposite, lanceolate, and entire, whereas those of the 

 adult are acutely crenulate. The first two leaves of Citrus 

 Aurantium are opposite, orbicular, emarginate, while suc- 

 ceeding ones are elliptic. C. decumana differs only by some- 

 times having the first four leaves in a whorl. The first and 

 second of Mg\e Marrnelos are nearly opposite, broadly ovate, 

 and doubly crenate. 



Calodendron capense, Thunb. 



Hypocotyl undeveloped. 



Cotyledons large, thick and fleshy, occupying the whole interior 

 of the seed, subterranean, and remaining in tbe seed till they are 

 absorbed or decayed, shortly petiolate ; petioles stout and subfleshy, 

 their presence being necessary to allow tbe plumule to emerge from 

 the seed. 



Stem erect, terete, densely pubescent, pale green, soon becoming 

 brownish, and dotted with small corky spots, ultimately woody and 

 arborescent ; primary internodes variable, with the primary leaves 

 undeveloped. 



Leaves simple, cauline, opposite or verticillate in threes, exstipu- 

 late, petiolate, decussate, alternately penninerved (with the nerves 

 in the young plant at least irregularly disposed), reticulate, closely 

 punctate, with pellucid glands, and a marginal, rather conspicuous 

 row of larger ones, deep green above, much paler beneath, minutely 

 pubescent on both surfaces ; petioles very short, subterete, flattened 

 or convex on the upper side, densely pubescent. 



First six leaves in the specimen described reduced to scales. 



Nos. 1-3. On the same level, falling away early, very small. 



No. 4. Alternating with the others, small. 



Nos. 5 and 6. Alternate or nearly opposite, green, lanceolate, 

 obtuse, densely pubescent, about 3 mm. long. 



4th to llth pairs opposite. 



4th pair foliaceous, lanceolate, obtuse, minutely auricled at the 

 base. 



5th pair much larger, lanceolate-elliptic, obtuse, slightly auricled 

 at tbe base. 



6th to llth pairs lanceolate-elliptic or oblong-elliptic, obtuse, 

 narrowed to both ends but especially to the base, where they are 

 distinctly auricled. Younger ones developing unequally. 



Correa Colvillei, Hort. 



Primary root long, slender, flexuous, with much branched, long, 

 lateral rootlets. 



