136 Malvaceae. 
time to the hybridization of Hibiscus, with wonderful results. The 
first successful attempts in cross-fertilization were undertaken by 
Mr. W. M. Giffard in 1902, he having produced a large number of 
many-colored hybrids. Others then took up the work and perfected 
many exquisite creations. The native white and red species were 
mostly used in crossing with H. Rosa sinensis and its hybrids. 
Other species of Hibiscus occurring in the Territory are Hibiscus 
sabdariffa, cultivated not for ornamental purposes but on account of 
the fleshy calyx, which is made into preserves; it is known as Rozelle 
on the market. Hibiscus tiliact us is indigenous in the Islands. It is 
the Hau of the natives, and is trained into arbors, for which it is 
especially adapted. Thespesia populnea, another malvaceous species, 
known locally as Milo, is also indigenous. It resembles slightly the 
Hau, but is an erect tree with straight trunk, and its rather hard 
wood takes a fine polish. Malvaviscus arboreus Cav. is a climber 
with red Hibiscus-like flowers. It is a native of tropical America and 
is sparingly cultivated in Honolulu. 
Hibiscus macrophyllus Roxb. 
Hibiscus macrophyllus is a medium-sized tree with the branchlets, 
petioles and inflorescence densely clothed with a soft tomentum 
mixed with long tawny fasciculate hairs a third of an inch long or 
even longer. The leaves are entire, heart-shaped, and softly tomen- 
tose on both sides; the blade is from six to twelve inches in diameter, 
with a petiole of six to ten inches. The stipules are oblong, convo- 
lute, hispid tomentose and deciduous. The flowers are borne in 
axillary pedunculate cymes, each flower being enclosed in bud by 
two large ovate deciduous bracts. The corolla is two to three inches 
in diameter, yellow, and has a dark purple center. The capsule is 
pointed and hispid. The seeds are reniform and have long tawny 
hair on the edge. 
This rather striking and well-named Hibiscus ( macro phyllus~ 
large leaved) is a native of India, where it occurs in Assam and 
Burmah, also in the Malay Peninsula and Java. In Honolulu a num- 
ber of trees of this species are in cultivation, as in Thomas Square, 
in Mrs. Foster's premises, and on the other side of Oahu, where it 
has been found wild or rather as an escape from cultivation, in the 
valleys as in Kaipapau and other smaller valleys. On Hawaii sev- 
eral trees grow on the premises of Dr. B. D. Bond of Kohala. 
