Z. wallichiana. ZALACCA. 85 
and at Mergui (Meebold No. 14274. Male specimen in Herb. Breslau); also. in 
Burma at Maytharouk, on the Salween, at 300 m. elev. and on the sea coast at 
Amherst (Brandis). In Siam (Schomburg in Herb. Calc.) and at Bangkok (Pierre 
in Herb. Paris) In the Malay Peninsula on the Tahan River in Pahang (Ridley) 
and Permatang Bertam (Ridley No. 7003) and at Bukit Juru, Province Wellesley 
(Ridley). Griffith writes of his Z. macrostachya, which certainly is the female, 
plant of Z. Wallichiana, that it grows “in marshy, damp and exceedingly shady 
places at Ching near Malacca” and that its spadices are so long as “to reach 
the ground on which the spike of flowers are frequently to be found, and often 
immersed in water, which abounds in the favorite localities of this species." It 
is said to grow also in Penang, Singapore, Sumatra, and Bangka, but I have not 
seen specimens from these places. 2 
Osservations.—Doubtless Z. macrostachya Griff. is. the female plant of Z. 
Wallichiana Mart., as is easy to verify comparing Griffith’s plate CLXXVIII, B. 
(Z. macrostachya) with Martius’s plate 119, I (Z.. Wallichiana), both representing: 
a portion of the female spadix in flower. 
To Z. Wallichiana also belongs Wall. Cat., No. 5000, male specimen in Herb. 
de Candolle ; in this specimen the spathes are slightly less than twice as long as 
the spikes. In Kurz No. 3328 in Herb. Cale. the spathes are just twice as long 
as the male spikes. In Griffith’s plate CLXXV the spikes are slightly shorter 
than their spathes. 
In Griffith’s plate CLXXV the figure representing a branch of ‘the male spadix 
really belongs to Z. Wallichiana, but in this figure the leaf seems to belong to 
another species, probably to Z. affinis. as its segments are Won and not grouped, 
as in Z. Wallichiana. 
Z. Wallichiana is well characterized by its leaves having a long petiolar part 
armed with spiral interrupted whorls of very large spines; by the leaflets green 
on both surfaces, oblanceolate, narrowing to a nearly straight base, in groups of 
9—4 on each side of the rhachis. and approximated by their bases in each group 
divarieating and pointing in different directions ; in having the mid-costa spinulous 
above only; by the elongate and nodding male spadices, having long pendulous 
spike-bearing branchlets; by the sessile d and ® superposed distant spikes, enve- 
loped by lacerated spathes, longer than the spikes; by the male spikes tomentose, 
and by their flowers having the apex of the segments of the corolla provided with 
introflexed appendages ; by the floral bracteoles being densely villose; by the fruit 
obovate-pyriform, conical in its upper part, and having spinous scales and oblong 
seeds. 
PLarte 50.—Zalacca Wallichiana Mart.—Portion of a leaf a little above the base; 
intermediate portion of the petiole; male spadix bearing spikes still young. From 
a plant cultivated at Buitenzorg (Herb. Becc.). Male spikelet at the moment of 
the anthesis; from Meebold's No. 14274. 
Prare 50A.—Zalacca Wallichiana Mart. in the Botanic Garden at Calcutta. 
Puare 51.—Zalacca Wallichiana Mart.—Portion of a leaf near the apex; portion 
of a female spadix in flower; the apical part of a spadix with young fruits. 
