NEW GENERA OF SCREW-PINES. 267 



ipsi apice latiores sunt, plerumque hexagoni, a parte inferiore, qua 

 vicinis adhserent, sunt angustiores et fere turbiimti, 



Semina non aderant (quippe planta dioica). 



Est habitus Pandanorum, nempe caudex arboreus, strictus ; folia 

 trifariam sunt disposita^ imbricata, e basi latissima sub-araplexi- 

 cauli elongato-lineari-lanceolata. Spadix est terminalis, spadices 

 partiales sunt spathis elongato-linearibus involucrati. 



Boornia rejlexa; foliis loi 



latiore inermi demum costa marginibusque spinosis, spinis e basi 

 albida tandem angustatis acutis ; thyrso terminali erecto triangu- 

 lari; pedunculis oblique adscendentibus complanatis; spadicibus 

 13 compressis atro-viridibus, apice conorum latioribus ibique fusco- 

 maculatis, ad planorum angulos lineatis. 

 I presume that this plant is a native of the Isle of France or Mada- 

 gascar, because it is more than probable that the former owner received 

 it from France. 



When the blossom was fully developed, it was 1^ feet. The leaves 

 at their bases about ] foot broad, and in all 7 feet long. 



The peculiar blossom, the compound spadices, the flat form of the 

 spadices, the shape of the drupse, the polyhedrons surface, and tlie flat 

 surface at the top of the fruit, suffice to separate this Pandanus from 

 the P. odoratissimus of Eoxburgh's Flora of the Coast of Coromandel. 

 If there appear other characteristics from the seeds and the male 

 flowers, we shall then certainly determine this with more Justice, 



I dedicate this genus, Doomia, to the services of his late Excellency 

 the Baron Van Doom van West-Kapelle, late Curator of the University 

 of Leyden, to whose patronage Natural Science in our counti-y is much 

 indebted, and whose name will be ever remembered by all who had the 

 happiness to know that excellent man, and to appreciate the eminent 

 qualities of his understanding and noble heart. 



Did space allow, I would call your attention to another genus, of 

 which the old Pandani (vh, the P.furcatm^ Roxb.) afford the type. 

 I must however confine myself to the indication of a specimen in spirits, 

 lately received by me from Java, Its distinguishing characteristics 

 are : a one-celled fruit, with a columnar top, hollow internally, and se- 

 parated from the rest of the fruit, while the style grows out in a hard, 

 horny mass, which is divided into two. The whole structure of the 

 fruit diflers much from all the other forms with which we are acquainted, 



