APPENDIX 



533 



(b) Plants following the rule deduced by Schimper for Terminalia, that 

 when a genus comprises several species possessing buoyant fruits, only 

 those having fruits with the greatest floating power are found at the coast, 

 the least buoyant plants occurring inland; examples, Calophyllum and 

 Guettarda. 



(c) Plants that like Ipomea behave irregularly in respect to seed- 

 buoyancy, a difference in behaviour often associated with varying stations 

 both at the coast and inland. 



(d) Plants with dehiscent buoyant capsular fruits, like Sterculia, where 

 dehiscence takes place on the tree and the seeds have no buoyancy. 

 Although the unopened fruit may float a long time, it does not in that 

 condition come under the influence of the currents. 



(e) Plants like Citrus Decumana, Gardenia, sp., &c., that, although 

 apparently exceptions to the principle, do not offer much opposition to it, 

 since the first is most at home at the river-side and the second often dis- 

 plays a decided inclination for a station at the coast. 



(f) Genuine exceptions to the principle, such as Hibiscus Abelmoschus 

 (see page 21). 



NOTE 6 (page 15) 



Table showing the Degree of Buoyancy of the Seeds and 

 Fruits of some Inland Hawaiian Plants 



(Unless otherwise stated, the seeds or fruits sink at once or in a day or two) 



Acacia Koa. 



Aleurites moluccana (1-2 weeks). 



Alyxia olivseformis. 



Argemone mexicana 



Argyreia tiliaefolia [nil or months). 



Bidens pilosa. 



Campylotheca sp. 



CanavaHa galeata. 



Capparis sandwicensis. 



Cassia Gaudichaudii. 



,, occidentalis. 

 Cheirodendron Gaudichaudii. 

 Colubrina oppositifoha (weeks). 

 Commelyne nudiflora. 

 Coprosma ernodeoides. 

 „ sp. 

 sp. 

 Cyathodes Tameiameise (a few days). 

 Cyrtandra sp. \ 



,, sp. V (a few days). 

 sp. j 

 Dianella odorata (a few days). 

 Dracaena aurea. 

 Eclipta alba (months). 

 Erythrina monosperma. 

 Gossypium tomentosum (a week). 

 ,, barbadense (a few days). 



,, sp. cultiv. (a few days). 



Hibiscus Youngianus (weeks). ■ 



Hydrocotyle verticillata (weeks). 

 Ipomea bona nox («// or months). 



,, insularis. 



,, pentaphylla. 



,, reptans. 



,, tulaerculata. 

 Jacquemontia sandwicensis. 

 Jussieea villosa (a few days). 

 LobeUacese (Clermontia). 

 Maba sandwicensis. 

 Metrosideros polymorpha. 

 Mezoneuron kauaiense (pod, a week). 

 Mucuna urens (months). 

 Myoporum sandwicense. 

 Olea sandwicensis, see page 364. 

 Phyllostegia grandiflora. 



,, mollis. 



Plectronia odorata. 



Pritchardia Gaudichaudii (5 or 6 weeks). 

 Ricinus communis (7-10 days). 

 Rubus Macraei. 

 Scsevola Chamissoniana. 



,, Gaudichaudii. 

 Sida fallax. 

 Sisyrinchium acvc. 

 Solanum aculcalissimum. 

 Sophora chrysophylla (pod, 1-2 weeks). 

 Viola Chamissoniana. 

 Waltheria americana. 



