URTICACEJE 



495 



with the stem ; stipules oblong-subulate, hairy, hyaline, caducous, 

 sometimes though rarely half-ovate, subfoliaceous, somewhat per- 

 sistent in the adult tree. 



Nos. 1 and 2. Opposite, ovate, acuminate, coarsely serrate, tri- 

 nerved in the lower half, with the 

 small stipules parallel and in close 

 contiguity, equal at the base. 



Nos. 3 and 4. Similar, but 

 larger. 



No. 5. Somewhat unequal at 

 the base, otherwise like the rest, 

 cut away on the posterior basal side. 



The fruit and seedling of Celtis 

 australis, L., are described by 

 Tubeuf (1. c. pp. 54 and 115). They 

 are very similar to those of C. 

 occidentalis, but the cotyledons of 

 C. australis are wider and rhom- 

 boidal in shape with a shallower 

 emargination. The first pair of 

 leaves are similarly longer and 

 narrower and acuminate. 



Tubeuf also figures and describes 

 (p. 53) fruits of several species of 

 Tllmus, and also a seedling typical 

 for the genus (p. 115). He says: 

 ' The cotyledons resemble in shape 

 those of Carpinus Betulus ; they 

 are obovate, petiolate, with two basal auricles 1-7 cm. long (not 

 including the petiole) and almost as wide ; they are thick, fleshy, green 

 above, whitish beneath, with a venation not at all or with difficulty 

 discernible, and are slightly hairy above with an entire margin. The 

 first leaves are almost sessile, alternate, show a midrib and side 

 nerves, are coarsely hairy like the stem, coarsely serrate, and acute.' 



Humulus Lupulus, L. 



Pistil syncarpous, superior ; ovary one-celled, one-ovuled, sur- 

 mounted by the short style and two linear stigmas ; ovule pen- 

 dulous, campylotropous, attached to the apex of the cell ; micro- 

 pyle superior, close to the hilum. 



Fruit an achene, broadly ovoid, compressed antero-posteriorly, 

 in the axil of an accrescent bract which folds over it with one oblique 



PIG. 64(5. Celtis occidentalis. 

 Nat. size. 



