g2 MARTELI-.I. 
seashore and by the structure of its fruits, which are adapted to transportation by 
water and which are easily carried here and there, even to great distances, by 
ocean currents. In consequence of its wide distribution, a great polymorphism 
is to be observed in this species, the leaves varying in size, and in the shape of 
their marginal teeth, while the syncarps vary iii color, dimensions, number and 
size of thr phalanges, locules, etc. My extensive collection of Pandanus includes 
a great number of specimens of Pandauus tectorius gathered in many and widely 
separated places, and among them a large number of difTerent forms are found 
so allied one to another, that it is impossible to separate them specifically. From 
the information concerning the habit of some of these forms communicated to 
me by the various collectors, it seems to me that this does not change a great deal 
in the difTerent varieties and forms; but I have only a small amount of data on 
which to establish this particular fact. 
In order to give a systematic anangement to the numerous Philippine forms 
of Pandanus tectorius, I have considered it necessary to distinguish several 
primary varieties of if and witli these varieties to associate some local forms. 
Pandanus tectorius Sol., var. spiralis Martelli, var. nov. 
Pandanus spiralis B\iinco V\. Kilip. (1837) 777. 
Forma a. Pluiknges late obpyramidatae, ba^i acutae, 5 cm longae, 
3-3.5 em latae, in vertiee plano-coiivexiusculae, lociilis 6-9, snbplanis, 
latis, sulcis iiilerloculariljii? latiusculi?, snperficialibiis. 
Lrzox, Province of Bataan, Lamao, For. Bur. 92 Barnes, Novend»er, 1903, 
sandy beach. 
Forma p. Plialanges ut in forma precedenti sed in vertiee convexa^, 
loeulis 12-18, minori])iis, nonnihil convexis, prominentibus, suleis inter- 
locularibus profundis. Arbor G m alta et 15 cm diam. 
Luzo.N, Province of Balaan, Laniao, Elmer 1018, November, 1904, seashore. 
Manila "caule prostrato" (in Herb. Hort. Bot. Petropolit.) . 
Forma y. Phalanges latae, conicae^ a medio usque ad basin abrupto 
et angnste obpyramidatae, 6 em longae, 4.5 cm latae, in vertiee plano- 
eonvexiusculae, loeulis 9, convexiusculis, sulcis interloeularibns super- 
ficialibus. 
r 
Luzon, Manila (in Herb. Hurt. Bot. Petropolit.). 
1 am quite sure from the description of Pandanus spiralis Blanco, in so far as 
it concerns the syncarps and phalanges, but not the male flowers, that it is only 
a variety of Pandanus tectorius Sol. It is the most common Pandanus in Luzon, 
but it assumes ditFerent local forms; the three described above are not, however, 
sharply distinguished one from another. 
Pandanus tectorius Sol., var. sinensis Warb. in Engl. Pflanzenreich 3 (1900) 
48. 
Pandanus tectorius Sol.; Warb. in Perk. Frag. Kl. Philip. (1904) 55. 
CuLiox, Halsey Harbor, Merrill 628, December, 1902, along the seashore. 
The tree is 3-C m high and the trunk 10-15 cm in diam. (Merrill), In the 
leaf of Merrill's specimen no. 628 the marginal teeth are a little closer to one 
another and shorter than in Warburg's typical specimen of this variety, but as 
regards the phalanges they are quite alike. Perhaps the slight difVt^rence is due 
to local influences. 
