30 
PACIFIC SCIENCE, Vol. XV, January 1961 
Skottsberg agreed that Hillebrand could re- 
tain either of the two species as H. Arnottianus 
and then describe the other as new (for Gray 
did not designate a type ) . Hillebrand considered 
the white-flowered Oahu plant as H. Arnottianus 
and described the red as H. Kokio. According 
to the international rules of nomenclature, the 
solution worked out by Hillebrand must be ac- 
cepted and is correct. We have the testimony 
of Rock and Skottsberg to this. The full syn- 
onomy given by Skottsberg is correct: 
H. Arnottianus ( A. Gray p.p. ) Hbd. s. str. ( ex- 
cluding Kauai specimens H. waimeae ) ; Rock, 
non Hochreutiner. 
Syn: H. waimeae (Heller) var. hookeri 
Hochr.; T.A.S.; H. fauriei Levi. 
H. waimeae Heller; Rock. 
Syn: H. Arnottianus Hbd. quoad spec. 
kauaiens 
H. Arnottianus forma, Mrs. Sinclair, 
pi. 8. 
H. waimeae (Heller) var. helleri 
Hochr. 
H. Kokio Hbd; Rock, T.A.S. 
Syn: H. Arnottianus Gray; Hochreutiner; 
non Hbd., Rock. 
H. Arnottianus forma, Mrs. Sinclair, 
pi. 9. 
FIG. 23. Distribution of H. Arnottianus popula- 
tions: 
Solid circles, H. Arnottianus 
Open circles, f. parviflora 
Solid triangles, var. punaluuensis 
H. Kokio Hbd; Rock, T.A.S. 
Syn: H. Arnottianus Gray pro parti; Hoch- 
reutiner; non Hbd., Rock. 
H. Arnottianus forma, Mrs. Sinclair, 
pi. 9. 
We conclude from this discussion that we 
have three distinct species: the two whites, H. 
Arnottianus and H. waimeae; and one red, H. 
Kokio. Hillebrand effectively restricted appli- 
cation of H. Arnottianus to a white by naming 
the red. 
14. Hibiscus Arnottianus f. parviflora Skotts- 
berg 
Fig. 23 
Hibiscus Arnottianus f. parviflora Skottsberg. 
Vascular Plants from the Hawaiian Islands, 
IV. Acta Hort. Gotoburg. 15: 396. 1944. 
DESCRIPTION: Tree to 30 ft.; well branched. 
Stipules subulate, caducous. Petioles 0.5—1. 5 cm. 
long. Leaves 4-6 cm. long, 4-5 cm. wide; cren- 
ulate to entire, glabrous to slightly stellate-pilose 
on the underside of leaf. Bracts 5-7, linear-lan- 
ceolate, 5-8 mm. long. Calyx tubular, 1-2 cm. 
long, 0.5-1. 1 cm. wide, slightly pilose. Petals 
6-6.5 cm. long; 2. 5-3-0 cm. wide. Staminal col- 
umn long exerted, 8-12 cm. long, red, free fil- 
ament tips extend 1.0-1. 5 cm. from column, 
style branches erect, 5-8 mm. long. 
HOLOTYPE: One mile south of Kolekole Pass, 
Waianae Mountains. (Hawaiian Bog Survey) 
September 3, 1938, O. Selling 3364 . 
SPECIMENS EXAMINED: Oahu: Palehua, Wai- 
anae Range, C. M. Cooke. Kupehau Gulch, ele- 
vation 1800 feet, Waianae Range, October 13, 
1946, Cowan 163. Kukuiula, Mokuleia, Waianae 
Range (Forest Trail N. 20a) elevation 1200 
feet, tree 30 feet, William H. Hathaway 163 . 
Puu Hapapa, Waianae Mountains, elevation 
2400 feet, October 19, 1930, E. Y. H osaka 323. 
Ekahanui Gulch, Waianae Mountains, elevation 
1200 feet, September 28, 1947, Yoshio Kondo . 
Keekee Gulch, in unfenced forest reserve, eleva- 
tion 1500 feet, October 13, 1941, Korte. Ma- 
kaha Valley, Waianae Mountains, January 31, 
1927, MacDaniels 369. Waikane Mauka Trail 
on the Waianaeuka-Wahiawa Divide, elevation 
1250 feet, March 15, 1958, Roe 266. Kealia, 
