THE 



JOURNAL 



OF 



THE 



LINNEAN SOCIETY 



Moyements 



J)\n4^, Esq., r.E.S., F.L.S. &c, 



[Read February 2, 1865.] 



Table of Contents. 



By Chables 



PAGE 

 1 



Introduction 



Part I. — Spirally twining Plants. 



Axial twisting 5 



Nature of the revolving movement 7 

 Purpose of the revolving move- 

 ment, and manner of the spiral 



ascent ..••.... 

 Table of the rates of revolution . 

 Anomalous revolvers • • . • 



9 

 14 

 21 

 24 



Variations in the power of twining 



Part II. — Leaf-climbers. 



Clematis •••••••• 26 



Tropaeolum • 34 



Antirrhinese 38 



Solanuni 41 



Fumariaceae ••••••• 43 



Cocculus •••••.•• 45 



Gloriosa •••••••• 45 



Flagellaria 46 



Nepenthes ..•••..• 46 



Summary on Leaf-climbers . . 47 



PAGE 



Part TIL — ^Tenbril-bearers. 



Bignoniacese 



Polemoniaceie 



Leguminosse 



Compositse • 



Smilacese • 



Fumariacese 



Cucurbitaceee 



Vitacese . . 



Sapindacese 



Passifloracese 



Spiral contraction of tendrils . • 



Summary of the nature and aC' 



tion of tendrils • • • • • 



49 

 61 

 65 



67 

 68 

 70 

 73 



79 



87 



89 

 92 



98 



Part IV. — Hook- and Boot- 

 climbers : CoNCLTJBINa REMARKS. 



Hook-chmbers ...••• 



Root-climbers 



Concluding remarks on Climbing- 

 plants • •.••••• 



105 

 105 



107 



I WAS led to this subject by an interesting, but too short, paper 

 by Professor Asa Grray on tlie movements of the tendrils of some 

 Cucurbitaceous plants*. My observations were more than half 

 completed before I became aware that the surprising phenomenon 



4 



of the spontaneous revolutions of the stems and tendrils of 

 climbing plants had been long ago observed by Palm and by 

 Hugo von Mohlf, and had subsequently been the subject of two 



* Proc. Amer. Acad, of Arts and Sciences, vol. iv. Aug. 12, 1858, p. 98. 

 t Ludwig H. Palm, Ueber das Winden der Pflanzen ; Hugo von Mohl, Ueber 

 den Bau und das Winden der Ranken und Sclilingpflanzen, 1827. Palm'a 



LIKK^. PROC, — BOTANY, yOL. IX, 



B 



