specimens is unknown. ■ 
The first comprehensive botanical collections were made by the 
Tanager expedition in 1923 and 1924-. The resulting publication on the- 
vascular flora (Christophersen; and .Gaum,. 1931) concurs with all earlier 
■ ■ ■ * • • ■ * 
observations in that the vegetation of Necker is described as sparse 
' and . inconspicuous . During-the .1923 Tanager survey* C. S. Judd* a forester* 
• . * • . . 9 ' i'-.; 
'• ‘ • ■ * , • , • ■ ‘ ‘ • >> 
sowed seed, of seven species of plants In the saddle between .Flagpole- and 
Summit Hills (Christophersen and Caum* 1931-7^ cf. annotated list below).' 
. Hone of these plants were found growing there subsequently. 
In comparing past accounts of the vegetation* it appears that the' 
composition has remained fairly constant over the years. Probably* 
differences can be attributed to the amount of rainfall previous to the 
• ■ . e 
visit'. The vegetation cover was sparse on recent visits'. Plants were 
restricted primarily to the top of the island* with some intermittently 
distributed on the natural terraces lower on the side. 
Vascular plants have been collected on Necker by the following: 
J.'O. Snyder* May 1902; E. L. Caum* June 19.231 E. • Christophersen* July 
1924; E. Kridler* July 1964; and C. R. Long and J. ¥. Beardsley,. Septem¬ 
ber 1964. The following list notes all species of vascular plants 
collected from* introduced to* or observed on Necker Island. Three of 
- 9 a 
the five species now growing there* Panicum torridum* Chenopodium oahuense , 
e , 
and Sesbania toraentosa , are native to Hawaii* while the other two are 
. .- widespread throughout the Pacific islands. Lists of lichens from this 
island may be found In Magnussen (1942); Tsuda (1966) lists marine algae. 
.. ■ . ■. ■ ■ ■■ ■ ■ .. ' ■ t ■ 
Specimens of the following are deposited in the B. P. Bishop Museum ■ 
Herbarium (BPBM)* the Herbarium of the University of Hawaii (UH)* or the 
U. S. National Museum (USNM) . 
t 
