Page 72: Revision of Pandanus, 7. Papua and the Solomons — S t. John 
587 
beginning 10-16 cm. up, with teeth 1.5-2 mm. 
long, 3-12 mm. apart, subulate, gently curved, 
brown based, the midrib unarmed; at the middle 
with teeth on one side 1—1.5 mm. long, 3-15 
mm. apart, brown tipped, subulate, appressed 
ascending, but the other margin unarmed, the 
adjacent midrib below with a few teeth 0.3 mm. 
long, 10-30 mm. apart, brown, stout subulate, 
appressed ascending; near the apex the margins 
and midrib below with a few, remote, brown 
serrations 0.2 mm. long; syncarps probably ter- 
minal and solitary, "gray green, up to 12.5 cm. 
in diameter,” phalanges 4.4-4.7 cm. long, 2.2-3 
cm. wide, 1.9-2 cm. thick, broad cuneate, the 
apex subconvex or truncate, compressed, upper 
l A free, the sides 5-6-angled, gently curving or 
nearly plane, smooth, shining, when dried 
brown, lateral carpel sutures none, central apical 
sinuses 3-3.5 mm. deep; carpels 4-6, the apices 
subequal, conic-semiorbicular, the marginal ones 
usually with a small truncate cap in the proximal 
lee of which is the inclined stigma, stigmas 1-2 
mm. long, oval to obdeltoid, creased, centripetal, 
below it the proximal crease on the carpel apex 
running from half way to all the way to the bot- 
tom; endocarp median, 25-27 mm. long, bony, 
dark brown, the lateral walls 2.5-8 mm. thick; 
seeds 15-20 mm. long, 4 mm. in diameter; 
apical mesocarp cavernous, traversed by longi- 
tudinal fibers and with delicate medullary mem- 
branes; basal mesocarp fibrous and fleshy. 
Papua: Yule Island, Jan. 16, 1955, /. S. 
Womersley & N. W . Simmonds 3,099 (BRI). 
SPECIMENS EXAMINED: Papua, Yule I., July/ 
Aug., 1918, C. T. White 770 (bri), consisting 
of one leaf only. 
DISCUSSION: The most similar kind is P. 
odoratissimus L. f. var. novo-caledonicus (Mar- 
telli) St. John, which has the phalanges 5.5 cm. 
long, the upper half free; carpels 7-9, the outer 
2-3 -times the larger; apical central sinuses 2- 
3.5 mm. deep; stigmas apical, horizontal; and 
the endocarp l A the length of the phalange. On 
the contrary, P. yuleensis has the phalanges 4.4- 
4.7 cm. long, the upper third free; carpels 4-6, 
subequal; apical central sinuses 3-3.5 mm. deep; 
stigmas steeply oblique, placed below the trun- 
cate apex; and the endocarp more than half the 
length of the phalange. 
The new specific epithet is an adjective 
made from the name of the type locality, Yule, 
by adding the Latin place suffix, -ensis. 
P and anus magnicavernosus sp. nov. (sect. 
Mammillarisia ) 
Figs. 41-42 
DIAGNOSIS HOLOTYPI: Arbor 8 m. alta erecta 
ramosa cum radicibus fulturosis, foliis 1.8-1. 9 
m. longis 9.5-10 cm. latis pallide viridibus mol- 
liter subcoriaceis subplanis in base midnervioque 
luteo-brunneis midnervio et nervis binis secun- 
dariis fortibus sed dentis innoxis apice acuto 
base paene dilatata et cum marginibus merri- 
branaceis per 25 cm. inermibus, marginibus ul- 
tra cum serris fortibus 1.5-2 mm. longis 3-10 
mm. distantibus stramineis sed apicibus brun- 
neis, midnervio inerme, in sectio mediale mar- 
ginibus cum serris 0.5 mm. longis 2-10 mm. 
distantibus subulatis valde adpressis, midnervio 
infra cum aculeis simulantibus subulatis sed 
fortioribus et paene brevioribus, nervis secun- 
dariis inermibus, ad apicem marginibus cum 
serris %ubulatis 0. 5-0.9 mm. longis 1-2 mm. 
distantibus pallidis adscendente adpressis, nervis 
secundariis supra scabris cum serris minutis ir- 
regularibus adscendentibus, midnervio infra cum 
aculeis 0.3-1 mm. longis subulatis adscendenti- 
bus aggregatis, pedunculis 90 cm. longis gracili- 
bus triangularibus, syncarpio solitario penduloso 
24 cm. diametro globoso glauco, phalangibus 
2-3 (rare 1 ) -carpellatis numerosis 7. 5-8. 5 cm. 
longis 17-35 mm. latis 14-21 mm. crassis cunei- 
formis 5-7-angulosis carnosis parte supera 1/6 
libera apice depresse conico plurianguloso cum 
1-3 extremitatibus, sinibus apicalibus centrali- 
bus 1-2 mm. profundis, stigmatibus 1.5-2 mm. 
longis cordatis apicalibus sulcatis quando binis 
centripetalibus quando tribus eo centrali ad la- 
terem dirigito, lateribus phalangiorum planis, 
endocarpio in tertia infera 24-30 mm. longo 
osseoso pallide brunneo lateribus 3-4 mm. cras- 
sis, seminibus 10-12 mm. longis 3—4 mm. dia- 
metro ellipsoideis, mesocarpio supero cavernam 
unical dimidiam quam longam quam syncarpiam 
formante sed sectio breve cum fibris et mem- 
branis medullosis, mesocarpio infero fibroso et 
carnoso. 
DIAGNOSIS OF HOLOTYPE: "Tree, 8 m. tall, 
erect, branched near top; trunk supported on 
