C'OAr PA NATIVE ANATO^FY OF THE rrCUrvlUTAf'R.T:. t>,) 



parenchymatous outgrowths, while those of Ci/nonis salhus are tlie 

 large protuberant hnses of trichomes, which have become detached. 

 20. Sieve-tubes have a characteristic distribution in the 

 fruits. Besides those found in the phloem there are isolated 

 sieve-tubes in the tissue of the pericarp. These extra-phloem 

 sieve-tubes occur in the hypoderma outside of the hardened ring. 

 And when no hardened ring is present they are found in the 

 outer part of the pericarp-tissue. 



26. Into the tubercles on the surface of the fruit of 

 3Iomordira Chamnt'ia a fibro-vascular bundle enters, and runs 

 perpendicularly to the surface branching out near the top of the 

 tubercle. Nothing of this kind is observed in other genera. 



27. The anatomical structure of the fibro-vascular bundles 

 in the fruit of Luffa cylindrica and L. acutangula deserves notice 

 because of the fact that the well-developed sclerenchyma surrounds 

 the remaining weakly-developed portion of the bundle, the whole 

 forming a spongy mass. 



28. We may distinguish three kinds of epidermal cells in 

 the seeds : a) flattened or cubical cells, b) prismatic cells, and 

 c) prismatic cells with thickened-ridges on their walls. To the 

 first class belong Actinoslemma raeemos^on, SchirMpepon hryonkv- 

 f oil us, vnr. japonic}! i< and GymnostemnH( ris^oules ; to the second, 



J/omordica Charanlia, Trichosanlhes curu/iierotdes, T. japonica 

 and T. muIiUoha ; and to the third, Jlelothria japonica, Laffa 

 cylindrica, L. acniangula, CUrullus vulgaris, Cucamis sativus, C. 

 Melo, Benincasa cerifera, Lagenaria vulgaris and Cucurbita Pepo. 

 The thickened-ridges of Benincasa cerifera, Lagenaria vulgaris 

 and Cucurbita Pepo ramify dendritically at the apex, while those 

 of 3Ielothria japonica. Cucumis sativus, C. Melo are pointed 

 towards the apex and widen towards the base. 



