(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 displays 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 olivæformis.
- Argemone mexicana.
- Argyreia tiliæfolia (nil or months).
- Bidens pilosa.
- Campylotheca sp.
- Canavalia galeata.
- Capparis sandwicensis.
- Cassia Gaudichaudii.
- Cassia occidentalis.
- Cheirodendron Gaudichaudii.
- Colubrina oppositifolia (weeks).
- Commelina nudiflora.
- Coprosma ernodeoides.
- Coprosma sp.
- Coprosma sp.
- Cyathodes Tameiameiæ (a few days).
- Cyrtandra sp. (a few days).
- Cyrtandra sp. (a few days).
- Cyrtandra sp. (a few days).
- Dianella odorata (a few days).
- Dracæna aurea.
- Eclipta alba (months).
- Erythrina monosperma.
- Gossypium tomentosum (a week).
- Gossypium barbadense (a few days).
- Gossypium sp. cultiv. (a few days).
- Hibiscus Youngianus (weeks).
- Hydrocotyle verticillata (weeks).
- Ipomœa bona nox (nil or months).
- Ipomœa insularis.
- Ipomœa pentaphylla.
- Ipomœa reptans.
- Ipomœa tuberculata.
- Jacquemontia sandwicensis.
- Jussiæa villosa (a few days).
- Lobeliaceæ (Clermontia).
- Maba sandwicensis.
- Metrosideros polymorpha.
- Mezoneuron kauaiense (pod, a week).
- Mucuna urens (months).
- Myoporum sandwicense.
- Olea sandwicensis, see page [364].
- Phyllostegia grandiflora.
- Phyllostegia mollis.
- Plectronia odorata.
- Pritchardia Gaudichaudii (5 or 6 weeks).
- Ricinus communis (7-10 days).
- Rubus Macraei.
- Scævola Chamissoniana.
- Scævola Gaudichaudii.
- Sida fallax.
- Sisyrinchium acre.
- Solanum aculeatissimum.
- Sophora chrysophylla (pod, 1-2 weeks).
- Viola Chamissoniana.
- Waltheria americana.
NOTE 7 (page [15])
Some Inland Hawaiian Plants possessing Buoyant Seeds or Fruits
Three of these, Eclipta alba, Hibiscus Youngianus, and Hydrocotyle verticillata, frequent wet places, and come under the principle that water-side plants generally have buoyant seeds or fruits. The buoyancy of the seeds of Argyreia tiliæfolia and of Ipomœa bona nox varies with station and may be explained as under Ipomœa in [Note 5]. The floating power of the fruits of Colubrina oppositifolia may be akin to that of inland species of Terminalia as indicated in [Note 5], since another species of the genus C. asiatica, which is a coast plant, has very buoyant seeds. Mucuna urens was no doubt originally, as it now is in tropical America, a littoral plant. The buoyant fruits of Pritchardia Gaudichaudii offer a genuine exception to the principle (see page [330]).
NOTE 8 (pages [18], [112])
The Pyrenes of Morinda
The pyrenes of the two Malayan inland species of Morinda (M. umbellata and M. longiflora) examined by Professor Schimper do not possess the bladder-like cavity to which those of M. citrifolia owe their floating power, and it is to be inferred from his remarks (p. 183) that they have little or no buoyancy. The pyrenes of a Fijian inland species, near M. Grayi, had no floating power as tested by me, and they lacked the bladder-like cavity.