154 ANNALS OF THE ROYAL BOTANIC GARDEN, CALCUTTA. [C. Barterii 
from inside, are attached very near the mouth of their own spathe. No leaf.sheath 
flagella were present in the specimens I have seen, but very probably the plant 
is furnished with them in its upper part when not bearing spadices, 
In the specimens from the Cameroon River (Mann No. 2147) all the nerves ni 
the upper surface of the leaves are smooth; in those from the Bagroo River 
(No. 891) the mid-costa is spinulous, and exceptionally a few spinules are to be 
Seen on the secondary nerves. 
A male spadix from Cameroon is 1:35 m. long, and bears only one partial 
inflorescence issuing from the lowest spathe, the remaining portion forming the 
flagellum. Another male  spadix from  Bagroo has three inflorescences. Rather 
frequently two flowers of equal size, and probably both fertile, come out from one 
spathel ; when this is the case, each flower is sometimes furnished with its own 
involucre, but more frequently there is a normal cupular involucre accompanied 
by a smaller one at its side. 
Putare 19.—Calamus deerratus Mann & Wendi, Leaf-sheath with the base of a 
leaf and a male spadix from a young plant; spadix with mature fruits; apex 
of a leaf-sheath from a full-grown plant (in the upper right-hand —— All 
' the figures from Mann’s specimens in the Herbarium at Kew. 
14, CaraMus Barrer Becc. in Herb. Kew.; Drude in Engl. Bot. Jahrb. 
xxi 134 (partly); Becc. in Rec. Bot. Surv. Ind. ii, 199; Wright in 
Fl. Trop. Afr. viii, 109 (partly). 
DescripTion.—Scandent, slender. Sheathed stem as thick as a man’s finger, 
10-15 metres long (Barter). Leafsheaths  flagellierous, thinly coriaceous, scaly 
furfuraceous (fugaciously ?) longitudinally striated, unarmed, very slightly gibbous 
above. Ocrea conspicuous, liguliform, 12-15 mm. long, shortly  bilobed, split on the 
outer side, where, as at the apex and in a lesser degree at the margins, bristly- 
spinulous. Leaf-sheath flagella slender, filiform, terete, about 60 em. long, armed 
with small solitary or sub.aggregate claws. eaves not cirriferous, 45-50 cm. long ; 
petiole 6-8 cm. in length, very obsoletely trigonous, channelled above, armed at 
the margins with some patent, straight, relatively robust spines of variable length, 
and beneath along the middle with solitary small claws, which appear at distant 
intervals throughout the entire length of the rachis; rachis partially furfuraceous, 
slender, trigonous, bifaced with acute and smooth angle above; leaflets few, 9-10 
on each side, grouped in rather distant opposite fascicles of two to four on each 
side, very spreading and sometimes nearly horizontal; sometimes single leaflets have 
the corresponding one on the opposite side or remain solitary ; four slightly shorter 
than the others are grouped at the apex, and the two of the terminal pair are 
completely free at the base; they are all linear-lanceolate, narrowed at the base 
and very gradually acuminate into a long, filiform, bristly-ciliate tip, dull-green 
(when dry) above, slightly paler beneath, where somewhat rusty-furfuraceous near 
their insertion, but otherwise glabrous, not or very sparingly sprinkled with brown 
sealy dots, thinly papyraceous and rather flaccid, subherbaceous; the mid-costa in 
the- upper surface not very strong, acute and smooth; the side-nerves slender and 
also smooth; on the under surface the mid-costa mug one nerve on each side of it 
