Malvaceae. 
hispid; the subulate stipules small and puberulous;.fiowers solitary on pedicels of 1.5 to 4 
thulate, free, 2 em long one-nerved; calyx iene anavens 
em 
em, - bra inear, 
tri-lobed, the heed ghee acute; hirsute outside, puberulous inside, 2.9 ong, 
flowers nearly the size as in H. Giffardianus, petals greenish yellow outside, yellowish 
inside, eet aud strongly ribbed, the nerves branching at the apex, densely hirsute es- 
pecially on the secre nerves, 4 to 5 em long, contorted, with piunt or acute apex; 
staminal ‘column tong ex a ant theriferous to Bos five lobed apex, the are acunnate, 
Jess than ae mens numerous, — s 6 mm long, anthers dark red; style branches 
erect, 3 mm; cone ovo 3) ry m se ah -black, woody, Boeelede stellate 
hispid, foals” same as in ee eee evious mx om 
Of this interesting tree only one is in existence and when last visited (1912) 
by Mr. Gerrit P. Wilder, who also collected the first open flowers from which the 
description is drawn, the tree was found to be in a dying condition; the branches 
were completely covered with a species of Usnea, probably australis. The tree 
occurs on the ancient lava fields of Auahi, on the land of Kahikinui, southern 
slope of Mt. Haleakala, on the lee side, where rain is very infrequent. Mr. 
Wilder visited the tree twice, and only on the last trip was enabled to find one 
open flower and a few more or less developed buds. Seeds of this species were 
planted by Mr. Wilder, who succeeded in raising one single plant. As the tree 
is situated on a cattle ranch, it will be only a very short time until it will have 
disappeared from its natural habitat. It was first discovered by the writer in 
November, 1910. The type is 8663 in the Herbarium of the Board of Agri- 
ture and Forestry, now in the safe-keeping of the College of Hawaii Herbarium. 
Hibiscadelphus Hualalaiensis Rock. 
Hau kuahiwi. 
(Plates 118, 119.) 
Se erate HUALALAIENSIS Rock in Bull, Hawaii Bd. Agric. & For. I. (1911) 
Tree 5 to 7 m high, hols an erect trunk 0.3 m in diameter, bark white, branches 
terete, with young leaves densely hirsute, leaves somewhat reniform, or bluntly and 
shallow trilobed, on long sasolen (10 to 16 em) with scattered stellate hair above, to- 
mentose underneath, the main nerves branching several times; flowers usually single on 
i if 0 
Ovulos in each coll of which upper is ascendin the lower a fsa co 
“ovate, 2 cm long, 1.5 em wide pow with yellowish stellate hair; seeds r 
with a yellowish white wool. 
This exceedingly interesting and distinct species was found by the writer in 
the year 1909 on the lava fields of Mt. Hualalai, in North Kona, Hawaii, and in 
the forest of Waihou of the same district, where about a dozen trees are still in 
existence. The writer revisited the above locality in March, 1912, and found 
tie trocs ip flower, while on his previous visit. June 18, 1909, only a few worm- 
eaten capsules could be found. The trees are badly attacked by several species 
301 
