BOTA>ICAL SUBJECTS. 189 



APPENDIX TO SECTION X. 



1. The aerial roots of NeijJirolepis are only modified hairy 

 branches or tendrils, which give oS buds when favourably situated. 

 They are comparable to very slender rhizomes. 



2. In Cucurhita Pepo aurantiformis the tendrils have verticillate 

 branches. In others, such as the " potiron " and" yellovr mammoth 

 pumpkin/' the sub-divisions of the tendril form a spiral whorl. 



3. Some varieties of vegetable marrow, such as the " small flat 

 custard," appeared to have no tendrils. 



4. A yellow pyriform cucurbit, with a green circular apex 

 (without name),* had abnormal tendrils. Some were on the side, 

 some opposite the leaf, as in vitis, some were in pairs, one on each 

 Bide of the leaf. Sometimes the tendril was below the leaf. 



5. In the Passion-flower and Tacsonia the tendril is axillary and 

 might be an abortive peduncle. It may, however, be the tendril of 

 the cucurbit displaced from the side of the leaf to its axilla. The 

 view of its being a depauperized peduncle would receive some 

 support from an observation I made in Cyprij^iedium hyhridv.m 

 Youngianum. It had a large lower bract, subtending an abortive 

 flower, which was like a simple filiform tendril, and in no way 

 difierent from the axillary tendril of Passiflora sicyoides and 

 others. 



6. Ivy gives ofi" roots just below the stem-node, both back and 

 front. The latter, however, do not develop. The intemodes also 

 give ofi" roots, like the intemodes of the tap-root of many plants. 



7. In the common vetch of gardens, on the lower part of the root 

 proper, I found a shoot with stipules at its base. The usual little 

 nodules were on the roots. Some of these stipules had incipient 

 leaves far below the surface of the ground. It appeared to me that 

 roots proper without stipules, and shoots proper with stipules and 

 leaves, were given oS" indifferently from the so-called root, or 

 prolongation of the radicle, in the same way that the orchid stem 

 at its nodes gives off" leaves, buds, and roots. Under some of the 

 root nodules of the vetch I could distinctly see what might be 



* I made all the^e observations at the Eoval Kew Gardens. 



