species of Clermontiae abound, such as Cl. oblongifolia, which has a variety on 
Maui and is also not uncommon on Lanai; Cl. persicaefolia is, however, peculiar 
to Oahu. It is a small, handsome tree with white flowers, and is not uncommon 
in Palolo Valley along the ridge leading to Mt. Olympus. On Molokai, Cl. 
arborescens and Cl. grandiflora take the place of Cl. macrocarpa on Oahu, the 
former being especially common not only on Molokai, but also on Maui, where 
trees of 20 to 25 feet in height can be found. At the Pali of Wailau, Molokai,. 
we find Cl. pallida as the third and last species of that genus on Molokai. 
The genus Cyanea, however, finds a larger development. On Oahu, the most 
common species are Cyanea angustifolia and Cyanea acuminata, the latter not 
unlike a Delissea at first appearance, to which supposition its white flowers 
would lead one. Cyanea Grimesiana, one of the few Lobelioideae with pinnate 
leaves, is often found hidden among ferns, and when not in flower could easily 
be overlooked as such. On Molokai we find Cyanea Mannii, C. solenocalyx, and 
C. ferox, which, however, has a close relative on East Maui. C. procera belongs 
to the 2000-foot level above Kamolo, in which district, however, the forest has 
suffered tremendously from eattle, and no doubt the introduced Japanese deer 
have contributed their share of uselessness. The trees in this section are again 
Ohia lehua, mainly with Cheirodendron Gaudichaudii (Olapa), Suttonia Lesser- 
tiana, and several species of Pelea, such as Pelea Molokaiensis, P. oblongifolia, P. 
sandwicensis, ete. Of Rubiaceae, Straussia kaduana is the most common tree, 
and is distinguished from its ally S. mariniana in its drooping peduncle, which 
is usually of various lengths. Psychotria hexandra has also been found outside 
of Kauai, to which island it was once thought to be peculiar. It grows in the 
mountains of Punaluu in company with Pittosporum glomeratum, P. glabrum 
(Hoawa), Perrottetia sandwicensis, numerous species of Rollandia, and in its 
Shade grows an exceedingly interesting species of Lysimachia, which was dis- 
covered by the writer in the year 1908, and has later been named by C. N. Forbes 
as L. longisepala. In the same locality grows a tree of the family Euphorbi- 
aceae; it is a true Euphorbia, and has been named after its discoverer as Eu- 
phorbia Rockii by C. N. Forbes, who also named a species of violet found by the 
author as Viola Oahuensis. The genus Cyrtandra of the family Gesneriaceae 
reaches here a wonderful development, and it can safely be said that Oahu har- 
bors more species of that genus than any other island of the group. 
Of Palms, we find Pritchardia Martii on Oahu, while on Molokai in the 
swamps of Kawela grows Pritchardia Hillebrandii. Of Araliaceae, Tetraplas- 
andra grows in the dense forests as well as on open, exposed ridges, in company 
with Scaevola glabra, Pelea, Campylotheea, and Yanthorylum oahuense, a small 
handsome tree. On Oahu we find Tetraplasandra meiandra in many varieties 
on the exposed ridges, while the variety @ of the same species occurs along a 
large gulch near Kawela swamp in company with Pittosporum glabrum, Lo- 
belia gaudichaudii, and Raillardia Molokaiensis. Tetraplasandra hawaiiensis 
is not uncommon on Molokai, especially above Kaluaaha and in Wailau valley, 
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