Some new Hawaiian plants 
JoserH F, Rock 
Pittosporum Hosmeri Rock 
Arbor 6.5—10 m. alta, ramis robustis; folia coriacea, 90-125 mm. 
longa, 18-38 mm. lata, oblanceolata, obtuse acuminata, supra 
glabra, subtus lanuginosa, petiolo tomentoso 12-25 mm. longo; 
capsulae maturae 3 aut 4in pedunculo 12-20 mm. longo, lignosae, 
glabrae, oblongo- subquadrangulatae, 55-75 mm. longae, 45 mm. 
latae; semina nigra, rugosa, 6-7 mm ; 
A tree 6.5-10 m. high, with a straight trunk and rather stout 
branches, young shoots pubescent; leaves crowded at the ends of 
the branches, coriaceous, 90-125 mm. & 18-38 mm., oblanceolate, 
bluntly acuminate, the upper side glabrous and wrinkled with a 
close net-work, covered underneath with a silvery gray wool, entire, 
gradually narrowing into a pubescent petiole of 12-25 mm.; open 
mature capsules single or 3 or 4 ona woody peduncle of 12-20 mm. 
and pedicels of 2 mm., thick-woody, oblong to subquadrangular, 
55-75 mm. X 45 mm., opening into two, three, or sometimes four 
valves witha longitudinal median groove, glabrous when old, cov- 
ered with a grayish brown wool when young; endocarp bright 
orange-colored, seeds black, rugose, 6-7 mm. in diameter. The 
fruits exude a milky glutinous sap. Flowers not collected. [F1G- 
URE I.] 
This tree is rather common on the lava fields of Puuwaawaa, 
Hawaii, at an elevation of 3,000 feet. The species is remarkable 
for the unusually large woody capsules which open into two, three, 
and sometimes four valves. (Native name Aawa hua kukui.) 
The type number is 3957 in the herbarium of the Board of 
Commissioners of Agriculture and Forestry, Territory of Hawaii. 
Collected at an elevation of 3,000 feet. (J. F. Rock, June 17, 
1909.) 
Named in honor of Mr. R.S. Hosmer, Superintendent of Fores- 
try, Hawaii. 
Sideroxylon rhynchospermum Rock 
Arbor 10-20 m. alta; folia coriacea, obovato-oblonga, 14-18 
cm. longa, 4.5—8 cm. lata, petiolo 2.5—3 cm. longo, alterna, stipulis 
0, prorsus glabra, folia novella tomentosa; calyx fere usque ad 
basin partitus, segmentis 5, acuminatis, imbricatis; corolla lutea, 
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