Rutaceae. 
rather rambling branches. WHillebrand’s material came from Kau and South 
Kona. 
Var. racemiflora Rock var. nov. 
Leaves ovate, cordate at the base, bluntly, acute, glabrous he puberulous under- 
eath, on ve oe bey petioles; panicles racemose, terminal and in the axils of 
the leaves, often than 6 em long, with yellow hind Laer gtaee Soweli small, numer- 
ous, stamens ee in i fertile y pate ovary tom 
This new variety is a small tree w ith broad flat i and reaches a height of 
10 to 15 feet. The branches are stout and woody to the last ramification. It 
occurs on the rough aa lava flows on the southern slope of Mt. Haleakala, Maui, 
between the huge blocks of lava, at an elevation of 1500 feet, where it is in com- 
pany with Reynoldsia sandwicensis and Alphitonia excelsa, the most predominant 
trees in the district. It was collected by the writer in flower, November, 1910. 
The type is no. 8676 in the College of Hawaii Herbarium. The native name of 
the tree is Manena. 
PLATYDESMA Mann. 
Flowers hte tebe Sepals 4, roundish, broadly peg ine, Petals 3, large, 
mbricate or convolute. Discus flat, slightly 4 to 8 lobed. mens 8 inserted. at the 
easet of the cakes the filaments flat, ovate or ovate-lan duiemne united into a wide 
» With e with linear anther cells converging at the apex. 
Carpels 4, united, each with 5 to 8 ovules suspended from a tt funiculus, hemitropous. 
Ovary deeply lobed. Style terminal, undivided, with thick stigm Fruit a dry 4-lobed 
indehiscent or capone a ebge with thin endocarp, with 2 or ire seeds in each cell. 
Seeds subglobose, with blac shining crustaceous testa, and with albumen. Apu te in 
the middle of the aie; ‘vith thin, broad, roundish cotyledons and short radicle.— 
Small trees or shrubs wit ong pepsin odor, and opposite or whorled, pie entire 
leaves. Flower s large in eiflingy cym 
The genus Platydesma is peculiar to the Hawaiian Islands and consists of 
three endemic species, only one of which is arborescent. Pl. rostratum, a shrub 
branching from the base, with rostrate or beaked capsules, is peculiar to Kauai, 
while Pl. cornutum is found on Oahu. Pl. campanulatum oceurs principally on 
Oahu, but is represented on the other islands in various forms. Pelea auriculae- 
folia Gray has erroneously been referred to Platydesma by both Hillebrand and 
Engler. Léveillé described two species collected by Abbé Faurie, both from the 
Punaluu Mts., Oahu. One, Platydesma Fauriei, is undoubtedly Pl. campanu- 
latum ; the other, Pl. oah uensis, is probably referable to Pl. cornutum, which the 
writer collected in the Punaluu Mts. Léveillé in his description of his second 
new species says: petalis luteis? None of the Hawaiian Platydesma have yellow 
petals, but are of a waxy white or cream color. 
Platydesma campanulatum Mann. 
Pilo kea. 
(Plate 91.) 
PLATYDESMA CAMPANULATUM Mann Proc. Bost. Soc. Nat. Hist. X. (1866) 317, 
Proce. Am. Ac. VII. (1867) 100, et Fl. Haw. Isl. Proe. Ess. Ins. V. (1867) i6a, 
et Mem. Bost. Soc. Nat. Hist. I. 4. (1869) 530, pl. 22 Wawra in Flora (1873) 
241 
