PHILIPPINE SPECIES OF PANDA NITS. 
67 
This species belongs to the section Keura and perhaps possesses narrower 
phalanges than any hitherto described. The racemose disposition of the synearps 
is of very rare occurrence in the species of this section, which is a very interesting 
and characteristic peculiarity of Pandanus botryoides. Sometimes in this species 
the locules of the phalanges are so obscurely or indistinctly separated one from 
another that they appear almost wanting, but in other phalanges locules are 
well defined and separated by distinct interlocular furrows. 
(9) Pandanus luzonensis Merr. in Govt. Lab. Publ. 17 (1904) 6, I. 1. 2. 
Pandanus calycarpus Martelli in Webbia 1 (1905) 365. 
Luzon, Province of Bataan, Lamao River, For. Bur. 91 Barnes, November, 
1905; Merrill 3317, October, 1905; Elmer 6662: Province of Rizal, For. Bur. 
2702 Ahern’s collector. 
My diagnosis of Pandanus calycarpus was made from a few phalanges preserved 
in the Botanical Museums of St. Petersburg and Munich (kindly communicated 
to me by their directors) apparently of the same gathering but without any 
indication regarding locality or collector. Not being aware of the publication of 
Pandanus luzonensis Merrill, 1 described about a month afterwards in “Webbia” 
this same species- under the name of Pandanus calycarpus, erroneously but not 
definitely referring it to the section Sussea. I am now of the opinion that it is 
best for the present, at least, to ascribe it to the section Keura, as it is possible 
that in a general revision of the genus Pandanus I shall be obliged to take out 
the species of that section. Mr. Merrill gives a. complete description of the male 
as well as of the female plant of this species and it does not seeem to me a 
Vinson ia. 
§ HOMBRONIA. 
(10) Pandanus dubius Spreng. Syst. 3 (1826) 897; Merrill in Govt. Lab. 
Publ. 17 (1904) 8. 
Mindanao, District of Davao, Malalag, Copeland 613, March, 1904, along the 
seashore, rare. 
Mr. Merrill considered that Pandanus radicans Blanco was a synonym of 
Pandanus dubius. I do not know the reasons for this identification, as Blanco’s 
description of Pandanus radicans is so indecipherable that I am obliged to acknowl- 
edge my inability to guess to what of the known species it can be reduced. 
Mr. Elmer refers to Pandanus radicans a specimen which he collected in Leyte, 
and perhaps he may be right, as noted above. Pandanus latifolius Perr. in Mem. 
Soe. Linn. Paris 3 (1824) 134, is probably this species. 
(11) Pandanus util issimus Elmer, Leaflets Philip. Bot. 1 (1900) 81. 
Luzon, Province of Tayabas, near Lucban, Mount Banajao, Elmer 7379, May, 
1906. 
This is a splendid species, very characteristic because of the peculiar shape of 
its drupes. Another species (not yet described) which seems allied to it was 
discovered by Mr. Giulianetti, near Port Moresby in British New Guinea, but of 
it, only some old drupes were sent to the Kew herbarium. 
(12) Pandanus simplex Merr. in Govt. Lab. Publ. 29 (1905) 6. 
Luzon, Province of Tayabas (Infanta), Tinman River, Whitford 782, Septem- 
ber, 1904, on the tops of hills at 150 m alt. 
