94 ANNALS OF THE ROYAL BOTANIC GARDEN. CALCUTTA. Z. borneensis. 
integument extends one-third of the entire length of the albumen ; the embryo 
is basilar, exactly opposite to the apical hollow and also penetrates a third 
of the albumen; the latter bony and homogeneous 
scanty. ’ 
; integument of the seed, 
Hasirat.—lIt is cultivated in the Botanic Garden at Buitenzorg, where I first 
in May 1870 collected some male specimens, from a plant introduced by Teijsmann, 
most probably from some of the Sunda Islands. Recently I have received (again 
from Buitenzorg) specimens of the same plant with male spadices and also, 
apparently, its fruits ; but in any case I think it safer to éonsider Z. dubia to 
be, as yet, established on the. male plant only. 
: OnservaTions.—It is certainly closely related to Z. affinis, from which it 
differs in the male spadices having several short spike-bearing branches, and by 
the spikes being shortly pedicelled, longer than their respective spathes and not 
tomentose; by the special bracteoles forming small cups, not woolly, but furnished 
only with a few elongate vesieular, piliform paleolae. The female spadix, supposed 
to belong to Z. dubia, is almost undistinguishable from that of Z. afints, as is 
also the fruit, the ‘latter however differing in containing one seed only and con- 
sequently in being much narrower, assuming that the presence of one seed only 
is a normal; not merely an occasional character. 
PLATE 58.—Zalacca dubia Bece.—Male spadix; portion of the petiole; interme- 
diate portion of a leaf. Specimen from a plant cultivated at Buitenzorg in 1878 
(Herb. Beccari). | 
Prate 59(A).—Zalacca dubia Bece.—Portion of a leaf near the apex; branch of 
the fructiferous spadix; mature fruits; seed cut longitudinally through the apical 
pit and the embryo. All specimens from a plant cultivated at -Buitenzorg (Herb. 
Beccari). 
ll. Zaracca BORNEENSIS Becc. Malesia, in, 68. 
Descriprion.—Palm of which the fruit only is known; certainly closely related 
to Z. affinis and Z. dubia. Fruit ovoid, suddenly attenuate above from a broad round 
base, terete, 5—5'5 em. long, 3:5 em. ‘in diameter, having a conical mammillate 
point, terminated by a very small muero formed by the remains of the stigmas ; 
scales in 18 longitudinal series, of a uniform chestnut-brown colour. broadly 
rhomboidal, considerably broader than long, the largest 1 cm. wide, sharply grooved 
along the centre, the grooves being continuous all along the entire length of the 
fruit; the points of the scales are obtuse, and only in the lowest very slightly 
thickened or prominent. Seeds usually 3, enveloped by a. not very thick fleshy 
integument ; when divested of this they are 2:5—3 em. long, 15-20 mm. wide, 
.12—13 mm thick, oblong, subtrigonous, having a convex dorsum and two inner faces 
separated by a faintly salient obtuse angle; the side angles are also obtuse; both 
ends are rounded and above is a\deep, small. apical hollow, leading to the in- 
trusion of the integument, which penetrates + of the entire length of the albu- 
men; the embryo is basilar, exactly opposite to the apical hollow, and also 
penetrates about the fourth part in length of the very hard homogeneous albu- 
men. 
