18 
PACIFIC SCIENCE, Vol. XV, January 1961 
from column, crowded on distal fifth of column. 
Style extension 2 mm. above column, branches 
0.7 cm. long, red, ciliate, spreading slightly up- 
ward from the horizontal. Stigmas capitate, 0.1 
cm. in diameter, red. Ovary truncate-conical, 
0.5 cm. long, 0.3 cm. wide, scarcely puberulent 
with short appressed colorless hairs. Capsule 
glabrous, 1. 5-2.0 cm. long. Seeds reniform, 0.4- 
0.5 cm. long, brown, coarsely pubescent. 
In 1930, Caum published a variety of H. 
Kokio which he had collected just inside the 
native forest at the bottom of Pukoo Valley on 
Molokai (E, L. Caum, no. 155, Feb., 1921). Fie 
named this group of plants var. pukoonis. These 
plants do not flower freely and very rarely set 
fruit. They differ from the species in the tex- 
ture and other characters of the leaf, petal shape 
and color, venation of the calyx, and other 
characters. 
HOLOTYPE: E. L. Caum no. 155. Planted at 
Caum’s Honolulu residence (1420 Piikoi St.), 
taken from bottom of Pukoo Valley, Molokai, 
just inside the native forest, February, 1921. 
(Specimen in the Herbarium of Bishop Mu- 
seum.) 
SPECIMENS EXAMINED: Molokai: Wailau 
Trail, 1912, C. N. Forbes 327. Mo. Halawa (the 
ridge south of the valley), August 1912, C. N. 
Forbes 472.Mo. Moist woods of Wailau Valley, 
elevation 500 feet, July 3, 1933, St. John 13230. 
Oahu: In cultivation 1420 Piikoi St., Hono- 
lulu, October 8, 1930, E. L. Caum 153 (dupli- 
cate). In cultivation in the University of Ha- 
waii Arboretum, October 25, 1956, Roe 202; 
also April 14, 1957, Roe 222. In cultivation on 
Alexander Street, Honolulu, May 30, 1958, Roe 
270. In cultivation, 2365 Oahu Avenue (brought 
from Molokai by W. T. Pope), 1931, St. John 
11170. 
8. Hibiscus Saint johnianus sp. nov. 
Figs. 12-14 
DESCRIPTION: Arbor 6 m. alta basi 5-8 cm. 
in diametro. Stipulis 7-12 mm. longis. Petiolo 
0. 5-2.0 cm. longo piloso; lamina 6-12 cm. 
longa 3-5 cm. lata elliptica vel oblonga, margine 
basi versus integro, nervo medio conspicuo, 
nervis haud palmatis, viride spinacii colorata 
(cf. Ridgway). Pedunculo 1-1.5 cm. longo 3 
FIG. 11. Distribution of Hibiscus Kokio populations: 
Solid circles, Hibiscus Kokio 
Open circles, Hibiscus Kokio var. pukoonis 
