DESCRIPTIVE CATALOGUE. 343 
Dillenius, whose only species is included in the Linnean genus under the binomial 
name P. mericanum. This species, although since referred to [ymenocallis, should 
be considered as the type of Pancratium and the latter name retained for the group 
to which its type species belongs. . 
Pandan (Philippines). See Pandanus tector ins. 
Pandanaceae. SCREWPINE FAMILY, 
LocAL NAMES (generic),—Palma (Spanish); Fala (Samoa); Hala, Lauhala 
(Hawaii); Ara, Rau-ara (Rarotonga); Pandan (Java); Vakoana, Hofa ( Mada- 
gascar); Pahong, Kafé Aggak (Guam); Pangdang (Philippines). 
Much confusion exists in the nomenclature of the Pandanaceae, owing to insufli- 
cient material in herbaria. In this genus the male and the female flowers are 
borne on separate plants. The leaves are Jong and narrow, tough and leathery, and 
are armed along the keel of the midrib and on the edges with sharp recurved 
prickles, They are arranged in triple spirai series toward the ends of the branches, 
forming dense tufts or crowns; it is from their resemblance to the leaves of the pine- 
apple that the name of the screw pine is derived. The trees are remarkable for their 
prop-like aerial roots, with large, cup-like spongioles on their tips. The male inflor- 
escence consists of a compound spadix, made up of a number of short catkin-like 
spikes, each of which bears an immense number of little naked flowers with indeti- 
nite stamens. The female inflorescence is a globular or oblong head consisting of 
very numerous, closely packed ovaries, each containing a single ovule. The fruit 
consists of a number of wedge-shaped clusters of drupes, congregated into oval or 
cone-like heads. 
At least three species of Pandanus occur in Guam, the most important of which, 
the ‘“‘aggak,’’ is represented by only one sex, and must be propagated by cuttings. 
It is probably Pandanus tectorius Parkinson (2. littoralis Jungh. ); but it can not. be 
identified with certainty, as there are many closely allied species. 
Pandanus dubius. I. NOB-FRUITED SCREWPINE, 
LocaL NAMEs.—Pahong, Pahon (Guam); Pajon (Spanish); Bangedang bonddk 
(Philippines); Uom (New Lauenburg group). 
A tree growing to the height of 3 to 7 meters, with very broad, stiff, long, coarse 
leaves, which are crowded at the ends of the branches. The drupes composing the 
large head each terminate in a point at the apex, giving to the fruit the appearance 
of the head of an enormous Fijian war club, studded with many blunt projections. 
The leayes are not strong. They are normally stiff, but may be made more flexible 
by heat, and may be woven into coarse mats, but they are inferior in every way to 
those of the aggak. The kernels of the seeds are sometimes eaten by the natives as 
a relish, but they are not a food staple. Collected in Guam by Chamisso and by 
Gaudichaud, by the latter of whom it was named Hombronia edulis. 
This species occurs only cast of the Moluceas. It has been collected on Mioko and 
Kerawara, of the New Lauenburg group, Bismarck Archipelago. ? 
REFERENCES: 
Pandanus dubins Spreng. Syst. 3: 897, 1826. 
Pandanus fragrans. FRAGRANT-FRUITED SCREWPINE. PLATE LX. 
Local NAMeES.—Katd, Kaff, Kafok, Café, Caf: (Guam). 
A small tree, 3 to 7 meters high, with glossy, green leaves having no textile value. 
In open places the trunk is short and soon begins to branch dichotomously; in the 
forest it sometimes grows vertically 4 meters before branching. (Pl. VIII.) Numer- 
ous straight aerial roots grow from the trunk up to a distance of 90 to 120 em, from 
the base, extending obliquely downward to the ground, serving as sustaining props. 
(PL XXII.) These roots as well as the trunk and limbs are whitish or ash-colored, 
« Lindley & Moore, Treasury of Botany, vol. 2, p. S40, 189). 
bWarburg, Beitrige, Engler’s Bot. Jahrb., vol. 18, p. 257, [S890, 
