Rutaceae. 
The trees from Hawaii first mentioned differed somewhat from Hillebrand’s 
description, and on this, as well as on the strength of its exceedingly aromatic 
odor, it is here described as a new variety. 
Var. citriodora Rock var. nov. 
Leaves 3-foliolate on a common Raisers petiole > LS em, chet hatin 3.5 to 4 em 
in diameter on not articulated petiolu — media lateral one 3 em, 
ovige cena haptees gens transparent, with a yes dra row “of a lacid oil glands along 
the entir ie ongly lemon- aed when fresh, young aves velvety tomentose 
panicles ides nt att the end of the branchlets, sepals aia ston Phat teenies the latter 2.5 
mm ovoid, esa as long, anthers ovoid, the rudimentary ovary pubes 
Hillebrand’s variety 8. the writer collected on Lanai. This ven has cori- 
aceous leaves which are also larger, ovoid to orbicular and even deltoid; it is as 
a whole a much more robust tree and entirely glabrous. Collected without flower 
or fruit July 24, 1910, in Kaiholena Valley, Lanai, no. 8076 in College of Ha- 
waii Herbarium. On Kauai the writer saw one tree and collected specimens of 
the same below Kaholuamano, growing on the edge of one of the canyons. It 
must be referred to Hillebrand’s var. 8., from which it, however, differs in the 
lateral petiolules, which are only 1.5 em long. Collected Sept. 18, 1909, Kaho- 
Iuamano, Kauai. (No. 5207 in College of Hawaii Herbarium.) 
Var. velutinosum Rock var. nov. 
Leaves 3-foliolate on a common petiole of 4 to 5 em, leaflets on petiolules 2 come 
even length, ovate acuminate, not ica truneate to unevensided at the bas rT 
velvety Sadiaatane throughout on “eer lower surface, quite opaque, without atrial 
oil glands, and not lemon-scented, A et paket any odor, even sesh leaves are crushed; 
stipules below the leaf-whorls, ipetiials, many nerved, pubes 
This tree occurs on the lava fields of Puuwaawaa, North Kona, Hawaii, ad- 
joining the lava fields of Puuanahulu, where the variety cifriodora occurs. This 
variety differs from the latter in the shape of the leaves, which are inodoriferous 
and densely velvety tomentose and quite opaque and without marginal oil glands. 
Collected March, 1912; type no. 10205 in College of Hawaii Herbarium. 
Xanthoxylum glandulosum Hbd. 
A’e or Hea’e. 
XANTHOXYL wig? i GLANDULOSUM Hbd. Fl. Haw. Isl. (1888) 74;—Del Cast. Ill. 
Ins Pacif. VI. oo 129.—Fagara glandulosa Engl. in Engl. et Prantl 
Pilstam “TIL. 4, (1895) 119 
es 9 to 7 —, 18 to 20 em long, ve leaflets soit sah 5 to 9 em x 2.5 to 3 
m, eas * the base, membraneous, glabrous, copiously punctate with large 
transparent oil-dots, the ester petiole about 2, 5 em, that of the setoalnal leaflet about 18 
m, the lateral featots pabaesdi 
Hillebrand collected this ee on West Maui, gulch of Lahainaluna. The 
writer found a small tree 10 feet high of this species in Waihou Gulch, near woes 
spring at the head of the valley, back of Makawao on the northwestern slope of 
Mt. Haleakala on East Maui, elevation 3000 feet. The tree was neither in flower 
nor fruit; the 7-foliolate leaves were coriaceous and not membraneous. A va- | 
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