K. macrocarpa. KORTHALSIA. 151 
the Island, and with flowers by Heyne at Bandjermasin in the south (No. 22 bis 
in Buitenzorg and Beccari Herbarium) and sterile at Pontianak in the West (Heyne 
No. 2543 in Buitenzorg and Beccari Herbariua). 
OBSERVATIONS.—I consider the species established upon Winkler’s fruiting speci- 
men No. 2777, which is accompanied with fragments of leaves having cuneately- 
rhomboid leaflets, considerably longer than broad, the largest of which are 25—30 cem. 
long, 7 em. broad, the anse being 12—15 mm. long. The old flowers still remaining 
on the fruiting spikes are 18—19 mm. long, the calyx alone measuring 8 mm., other 
wise as described above. On Heyne's specimen No. 22 bis I have mostly based 
the description of the flowers; these in one specimen (that represented in plate 
100) are constantly 15 mm. long; but in one flowering branch bearing only two ` 
spikes (evidently, however, of the same collecting as the above) the flowers are 
18 mm. long or as long as those of Winkler's fruiting specimen. I cannot attach 
much importance to this discrepancy in size of the flowers as a diagnostic 
character, but I suggest that it may represent, perhaps, a case of dimorphism 
of the flowers for promoting cross-fertilisation, to which apparently insects are not 
extraneous, as I have constantly found that all the flowers I dissected had had 
the fleshy parts at the throat of the corollas destroyed by their agency. | 
In Heyne's specimen No. 22 bis, the portions of the leaves, which evidently 
belong to the upper part of adult plants, have rhomboidal leaflets, slightly longer than 
broad and with extraordinarily long anse. In the sterile specimen from Pontianak 
(Heyne No. 2543) the leaflets are cuneately-rhomboidal as in Winkler’s, but the 
anse are somewhat longer than in his specimen; the unusually long and peculiar 
horn-shaped cerea is very similar in all the above-mentioned specimens, and this. 
seems to me the best argument for considering them all conspecific. 
The spikes laden with fruits look more like those of a Zalacca than those 
of a Korthalsia, and the great development of the spathels also contributes to 
this resemblance. 
The specific characters of K. macrocarpa are the moderately large size; 
the ocree so extraordinarily long, horn-shaped, unclosed on the ventral side, and 
narrowing in their upper part, armed with slender black spicule; the leaves 
having leaflets green above and conspicuously mealy-white beneath,  cuneately- 
rhomboidal or rhomboidal, long  ansate; the thick, squarrose spikes, having 
large spathels and non-woolly flower bracteoles; the large flowers in which 
the apex of the stigmas reaches to about midway of the anthers; the large 
obovate-turbinate fruit; the seed deeply penetrated by a laminar intrusion of the 
integument. : | 
K. macrocarpa differs from K. squarrosa by its considerably longer horn-shaped 
ocree, by the larger flowers, and by the very elongate anse; from K. robusta it 
differs by the larger flowers having the apex of the stigmas considerably surpassing 
the throat of the corolla. : 
Puare 100.—Korthalsia macrocarpa Beec.—Ocrea entire, and the basal portion of 
a leaf, from a full-grown and fertile plant; portion of the panicle composed of 
3 spike-bearing branchlets; another portion with only. one spike. From Heyne's 
specimen No. 22 bis of the Buitenzorg Herbarium in Herb. Beccari. 
