284 



BOTANICAL GAZETTE 



;APRIL 



Occasionally a second hair, similar in structure but of smaller sue, is 

 developed at the side of the terminal one. The hairs usually disap- 

 pear in the early stages of growth, but the emergence, unless rubbed 

 off, persists as a brown hyaline spine. 



In addition to the hairs of the wart, numerous small capitate haiix 



consisting of a four- 

 celled head and 

 stalk of three cells, 

 cover the immature 

 fruit, but disappear 

 early, leaving no 

 scars. Stomataare 

 not present. 



2. Hypoderm 



(hy) .— A number 

 of layers of small, 

 rounded, loosely ar- 

 ranged cells form 

 the subepidermal 



tissues. In t he 

 young fruit they are 

 filled with chloro- 

 phyll grains which 

 entirely disappear 

 at maturity. 



At the base ol 

 the emergence o 



T3oa1-(aJ 



Fig. h. — Cucumis sativus L. Pericarp in cross- 

 section; epi, epicarp with emergence bearing t, hair; hy, 



Y\\rr\f\r\nw* . <>* ~„1 1 a* t ..11- -a U 



;roup 



curs a 

 hypodermal 



of 



c 



ell 



hypoderm; st, sclerenchymatized cells at base of hair. X55- which beCO 



thickened, sclerenchymatized, and pitted (st). This t c ^^ or 

 the cell walls probably serves either to prevent evap °J cnce ' In 

 entrance of fungi, or both, after the removal of the emeT ^ u ])C \ * 

 leguminous seeds there are sclerenchyma cells imme ia 

 the hilum groove which serve this same purpose. . stonc 



3. Ouler mesocarp. — Moeller 22 finds a weakly de-v 



22 Mikroskopie der Nahmngs- und Genussmittel 473- 



