1909] BARBER-FRUITS AND SEEDS OF CUCURBIT ACEAE 281 



5. Inner mcsocar p. —The cells of the inner layers are the same 



mesocarp 



intercellular spaces, and no evident contents. The fibrovascular 

 bundles, sieve tubes, and latex tubes, found throughout the tissues, 

 are of the usual type. 



6. Endocarp — 

 already described. 



and fourth layers, as follows : 



Pep 



*. Epidermis. —The thickenings on the radial walls, besides 

 branching profusely at the outer end, send out occasional fine branches 

 the whole length of the rod. 



4- Parenchyma .—The second layer of this parenchyma is four or 

 five cells thick, with somewhat smaller intercellular spaces than in C. 



C. Pepo var. Melopepo L. 



The popular name (scallop) for this variety suggests the shape of 

 Ae fruit. It is a large depressed berry with ten to fifteen quite deeply 



CUt lftnmtin4:~-l t -i r-i r>_*._ •*. 1- -G,-^ <-YYir»r»th and Vel" 



cu t longitudinal grooves. Like C. Pep 



low. with o t-;«^ J. . 1 •. . 



r i *ith a rind and a central cavity containing fibers. 



The seeds are elliptical, i-i.5 cm in length, smooth, flattened, 

 wwdered, and of a yellow-white color. 



Pericarp.— The cell structure does not differ essentially from 

 that of C. Pepo. 



SPERMODERM.-This coat differs slightly from the corresponding 

 COat of C - Pepo. The palisade layer, with thickenings like those of the 

 «WJ verrucosa, is thicker, reaching o. 3 mm on the flattened surface 

 of the seed. 



The raphe, which in the species previously described is found only 



)u *l the edge of the seed, here sends out a few branches over the 



j* In cross-section the cut surfaces of these branches are quite 



des. i n 



ftid ott in the 



ma 



Th 



C. Pepo var. ovifera Ndn. 



whit 



e 



e f ruit of this variety is egg-shaped, 8-io cm long, of a yellow- 

 er, with hard rind which dries up and persists in its original 



