Malvaceae. 
with a stellate tomentum, sack 7-nerved, with et se , tel in the angles of r 
and veins on both sides; stipules small triangular caducous; flow eats 4 ne sev veral in 
the axils of the leaves on the ends of the nches; prastoie , 2 cm 
long, free, filiform; etiety saccate, deeply nike uneve nly 2 to 3 cleft, ees pd i pea ’ma ny- 
nerved, yellowish “green outside, with stellate Shale: eae inside; corolla convolute, 
curved, only the very apex slightly opening, . = almost completely con- 
torted poabiration: on pedicels of 2 to 3 em, petals 5 long acute at the apex, 
oblong very uneven-sided, deep magenta inside, mete 2 esau shen eb a stellate 
hispid tomentum on the exposed parts, especially on the pro nt s; stamin 
column 1/3 longer than the petals, with numerous long flamanacee on epee “half its length, 
hispid at its base; style ches -erect 5 mm, hang ges vere henge a — e 
broa 
at the base, rugose, yellowish- psa covered ba ag liste b 85 ihe yx gee t hcesanien 
— before Mis share of fru endocarp tiene eceous poe hee ae loose; seeds 
large 7 to 10 mm, reniform, pico ivith dirty whitish-gray wool, 
The Hau Kuahiwi is a remarkable tree. At first appearance one would think 
it to be the common Hau (Hibiscus tiliaceus), but at closer inspection one ean- 
not but wonder at the most peculiar shape of the flowers, which are of a deep 
magenta, and the large yellowish tuberculate capsules. It is a rather low tree, 
with not erect but rather inclining trunk of a foot in diameter, with a many- 
branching round crown. The genus ‘‘Hibisecadelphus,’’ meaning ‘‘brother of 
Hibiscus,’’ was described by the author and the species named in honor of Mr. 
W. M. Giffard of Honolulu, in whose company the writer collected his first 
specimens. 
It differs from the genus Hibiscus in its very peculiar flowers and mainly in 
the calyx, which is not persistent with the capsules, but drops together with 
the bracts as soon as the capsules are formed. 
Unfortunately the tree, of which a specimen is figured in this book, is the only 
one in existence. It is unique among all Hawaiian plants, and the author is 
sorry to relate that nothing has been done to protect it. Like many other Ha- 
Waiian trees, it will sueeumb to the ravages of cattle, which inhabit a great many 
of our native forests. 
This single tree is found on a small Kipuka of 56 acres called Puaulu, on the 
land of Keauhou, near Kilauea Voleano, at an elevation of 4200 feet, on the 
Island of Hawaii. It is surrounded by a great many rare trees, which will share 
its fate sooner or later. Among them are beautiful trees of Sapindus saponaria, 
Peleay Xanthoxylum, Urera, Straussia, Ochrosia, ete. 
The genus consists of three species—the above described one on Hawaii, one 
on Maui with only a single tree left, and the third on Hualalai, Hawaii. The 
wood is white, not so soft as in the Hau, while the bark is whitish and fibrous. 
Hibiscadelphus Wilderianus Rock. 
Hau kuahiwi. 
diate sparebats WILDERIANUS Rock in Bull. Haw Bd. of Agric. & For. I. (1911) 
12. p 
: date with a 
A tree 5 m, trunk erect; leaves shih ce in outline trilobed wavy, cor 
broad sinus at the base, with ‘subacute or blunt apex, on petioles of Pg hier — z 
5 to 7 nervy ed, puberulous above, with aicae. pol oie hair underneath; ner Pp 
299 
