^ 
* " 
68 ANNALS OF THE ROYAL BOTANIC GARDEN, CALCUTTA. Zalacca. 
spadix carries very reduced spikes, containing very few female flowers not accompanied 
by a neuter one, and the fruit is covered with flat, appressed, smooth scales. The 
third group (Eletodora) has the female flowers crowded together, as in Zuzalacca, into 
cylindrical spikes, each flower being accompanied by another flower, neuter or male ; 
the fruit is monospermous and clothed with smooth scales, and has the seed of a 
special conformation. 
GEOGRAPHICAL DISTRIBUTION.—Zalacca is one of the most characteristic exclusively 
Indo-Malayan genera of Palms. The 13 species at present known flourish chiefly 
in the very rieh soil of the recesses of the primeval forest, or in very damp situa- 
tions.  Z. secunda is the most northerly species being indigenous to Upper Assam 
and the Mishmee Mountains ; it stands alone and has no close affinities with the other 
continental species Z. Wallichinna, found more to the south in Burma, Tenasserim, 
Siam, Cochin-China and the Malay Peninsula. To Z. Wallichiana are related not only 
Z. glabrescens, which likewise grows in the Malay Peninsula, but also the insular 
Malayan species, viz. Z. Blumeana, Z. edulis, Z. vermicularis, Z. sumatrana and 
Z. Clemensiana of the Philippines, all being characterized by having hispid spiculi- 
ferous fruits.  Z. affinis (rom Malacca, of the Lerospatha group, has its representative 
in the Bornean Z. dubia. Z. conferta and Z. Scortechinii (Eleiodoxa) are gregarious 
marsh palms, growing in the Malay Peninsula, in Borneo, Riow and Bangka, but 
they are apparently not common plants. The native country of Z. dubia is not 
known. It is found only in cultivation at Buitenzorg, but most certainly is a 
native of one of the Malay Islands. 
The precise place of origin of the Malayan Z. edulis is also as yet uncertain, 
it being a plant that frequently receives a kind of rudimentary culture, on account 
of its edible acid fruits. 
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ZALACOA. | | | | | 
1 | Z. edulis Reinw. * el aut eci Gua sa s | t | ze 
A var. amboinensis Becc. ... | ... un i She | E s hs dro | Du | i 
rcs var. riowensis Bece. eo pas sab de nua SA RA foca SR 
2 | Z. vermicularis Becc. ... a | oes ea AR W | T x TR T | i 
3 |Z. Blumeana Mart. — ... E i SA vum | i T. | SE | A 
nE 5 var. Rimbo Bece. Msi Sire 2 ska ri or a | En : | y a 
5 | Z. sumatrana Becc. ... ase | ped es HM 4 | + | pa = | RO ata 
6 | Z. Clemeusiana Bece. ... nile s e 3 . ase yi | + 
919 Wallichaia Man ... Son + 21 clt | xc cared 
8 |Z. glabrescens Grif... oe | i ee - . » "s dies = | 
9 |Z. secunda Grif. ^ ... lcd E = s& apt ses ee ee | 
10 |Z affinis Grif. R s | ove + à ce T s | = | 
11 | Z. dubia Bece. oi MM aes iv sl ua s TA A ae TAR 
12 | Z borneensis Bece. — ... Lei | eL vas ses i ose e Di | oe T | (0 ose 
13 | Z. conferta Grif. da fe a n = aid 4 à | Li + | Dì 2: 
14 |Z. Scortechinii Bece. ... "tut | | i Gs 
