C. gogolensi S.] BECCARI. MONOGRAPH OF THE GENUS CALAMUS, 261 
Pare 91.—Calamus macrochlamys Becc. The summit of a plant with the base 
of a fully developed leaf and an entire male spadix. 
Pirate 92.—Calamus macrochlamys Becc.—The entire remaining portion of the 
leaf, of which the base is figured in the preceding plate.—From the type-specimen 
in the Berlin Herbarium, 
75. CALAMUS GOGOLENSIS Bece. sp. n. 
DescripT10N.—Scandent, of moderate size. Sheathed stem about 2 cm. in diam. 
2-4 cm. Lauterbach. Leaf-sheaths flagelliferous, light-greenish when - dry, gibbous 
above, marke? from the insertion of the flagella lower down with an obtusely raised 
costa, rather densely armed with light-coloured spines of which some are very small and 
subtuberculiform and others laminar, slender, deflexed, of variable size, short or 
up to 15-20 mm. long, these last usually present near the mouth.  Leaf-sheath flagella 
filiform, almost unarmed in their lower portion, higher up very densely covered with 
very small usually scattered claws. Ocrea rather large, 8-10 cm. in length, liguli- 
form, obtuse, membranous, exsuecous and very finely spinulous on the axillary side 
(between the petiole and the stem), and disintegrated into reticulate fibres or filaments 
on the outer side. Leaves not cirriferous, about 1 m. in length; petiole rather 
short (12 cm. in one leaf), rounded beneath, where armed near the margins and 
along the middle with many small scattered prickles; rachis flattish above in the 
lower third-part aud  bifaced upwards, convex beneath where armed along the 
middle and at the sides, from the base to the summit, even between the two 
terminal leaflets, with uniform, short, solitary, light-coloured or slightly brown-tipped 
claws ; leaflets not very numerous, in one leaf conspicuously approximate into 6 opposite 
bundles of two to three pairs each with vacant spaces of 10-15 cm. between each 
bundle; the leaflets are thinly papyraceous, rigidulous, dull and concolorous on both 
faces, ensiform or very narrowly lanceolate-ensiform, somewhat narrowed to the base 
where attached to the rachis with a small axillary callus, gradually acuminate from 
the middle upwards into a tip, which is bristly spinulous at the sides, tricostulate 
with the mid-costa acute and the side costae more slender, all three furnished above 
with a few short fulvous bristles; beneath all the nerves less prominent and only the 
mid-costa with a few bristly spinules towards the apex; margins not thickened, appress- 
edly spinulous; transverse veinlets very slender, much interrupted; the largest leaflets 
up to 35 em. in length and 2-2°5 cm. in width, but except those of the terminal 
group which are shorter they are all of about the same dimensions; the two of the 
terminal pair confluent up to the middle and forming a small forked flabellum.— 
Other parts unknown. 
Hazrrat.—German New Guinea: in the upper part of the course of the Gogol 
River, Lauterbach No. 1560, 24th Nov. 1890, in the Berlin Herbarium. | 
OBSERVATIONS,—I have seen of this only one sterile specimen with a portion of 
the stem and an entire leaf. It has the same kind of armature on the leaf. 
sheaths as C. vestitus and it is evidently closely related to C. ralumensis from which 
it differs in the densely spinous leaf-sheaths, shorter and obtuse ocrea, and in the 
leaflets very distinctly approximate in bundles. 
