200 ANNALS OF THE ROYAL BOTANIC GARDEN, CALCUTTA. [E. ambigua. 
the ovary has reached the mouth of the corolla; detached ovary ; seed. From 
Keheding's specimens collected in Selangor. 
2. Everissona AMBIGUA Becc. 
E. tristis (non Griff.) Becc. in Nuovo Giorn. Bot. Ital. iii, 28. 
Description.—Stemless, caespitose and without aerial roots.  Petiole obtusely 
trigonous, armed in its lower part with flat, laminar, long and short, black spines, 
and covered, as well as the lower face of the rhachis, with very dark, very thin 
and appressed scales. Leaflets narrow, setose only on the mid-costa above. Spadix 
cupressiform, similar to that of Æ. tristis. Flowers narrow, falcate, 7—7°5 cm. long. 
The corolla is tubular and entire in its lowest third ; its divisions are 6 mm. 
wide, very thick, and have tbe apex subtrigonous; the calyx is campanulate, 17 
mm. long, broadly 3-lobed, the lobes obtuse;  stamens apparently in groups of 
10—12 at the base of each division of the corolla; growing ovaries when 3—4 em. 
in length, obtusely 3-gonous, truncate at apex, where the angles are terminated by 
an inconspicuous but almost pungent point; style 5 mm. long, with a conical base, 
and narrowing into a slender 3-gonous apex, papillose stigmatiferous on the angles ; 
scales almost uniformly dark chestnut-brown, flat and apparently a little smaller 
than in E. tristis, the largest being not quite 1 mm. broad. The fruits are 
unknown, but probably have no more' than six dissepiments, as far as can be 
inferred from the growing ovaries. 
‘ Hapirat.—Central Borneo. at Segrat on the river Unpanang, near the lakes of 
the Kapuas, on slightly raised hillocks isolated in the plain, named “ Mattangs ”’ 
by the Malays, and having a peculiar vegetation, quite different from that around 
them, and especially characterized by an umbelliform Casuarina (Beccari, P. B. No. 
3443) 
Osservarions.—It is related to Æ. tristis, from which it differs, as from any 
other at present known species, in the relatively elongate style, of the peculiar 
form described above. Apparently it differs from E. tristis also in having the 
angles of the apex of the growing ovaries terminated by three inconspicuous but 
pungent points, whereas the ovaries of the same age in Æ. tristis have the apex 
rounded, exclusive of the short trigonous style. It is also distinguishable from 
the other Bornean species by its short stems, not propped by long aerial roots ; 
by the leaflets having the mid-costa alone bristly; by the flowers 7—7:5 cm. long, 
having the corolla entire, but finally splitting in its lowest third part; and by the 
scales (of the very young fruits) being only about 1 mm. broad or smaller than 
in E. tristis and E. minor, but larger than those of E. utilis. i 
PLate 115(B).—Eugeissona ambigua Bece. Branchlet with anthodia; flower with 
growing ovary; the ovary. From Beceari’s P. D. No. 3443. : 
3. Euerrsoyá minor Becc. in Nuovo Giorn. Bot. Ital. iii, 18. 
DescrIPTION.—The entire -plant is 3—5 m. high; the stem itself, however, is 
very Short, but raised above the ground and propped by aerial roots about 1 m. 
long. Leaves 4—5 m. long on the whole, the pinniferous part alone being about 
2 m. long; the petiole about as long, terete, 1 cm. in diameter, thickly sprinkled 
with small, appressed, tobacco-coloured scales and armed, near the base, with 
