P. elongata. PLECTOCOMIA. 23 
Description or Pirate I—B. 
1-4. Plectocomia elongata Mart. & BL—Fig. l.—Femále flower. Fig. 2.—Male 
flower. Fig. 3.—Section of a male flower showing a petal and the two stamens 
opposite to it. Fig. 7—A stamen from the dorsum (Fig. 1) enlarged 4, the others 
6 diameters). 
Fig. 5° Plectocomia bractealis Becc.— Female flower (xd) 
Fig. 6. Plectocomia assamica Grif.—Female flower (x 4). 
Fig. 7. Plectocomia Kerrana JBecc.—Male flower [x A 
EXCLUDED SPECIES. 
PLecrocomia sumatRANA Mig. Prodr. Fl. Sum. 592=P. elongata Mart. et BI. ? 
This species was established on very scanty material, consisting mostly of very juvenile inflorescences, of 
which I have seen a portion from the Utrecht Herbarium, aud another portion of the same collecting from 
Buitenzorg ; this last had the label in Teijsmann's hand-writing—'* Nə. 2034. Sitabe, Paya Kombo." One leaflet 
united to fragments of a spike. exactly corresponds to the fragments of P. elongata Mart. from Java. 
DESCRIPTIONS oF SPECIES, 
1. PLecrocomia ELoNGATA Mart. and Bl. in Roem. et. Sch. Syst. Veg. vii, 1333; 
Mart. Hist. Nat. Palm. iii, 198, t. 114 and 116, f. 1; Kunth, Enum. 
Plant. ii, 202; Blume, Rumphia iii, 68, t. 58 and 163 A, Miq. Fl. Jungh. 
1.101; Fl Ind. Bei. iu, 79; Prodr. Fl Sum. 255: De Palm. Arc. Ind. 
215 Hook. f£. FI Brit. Ind: vi, 479; Ridley, Mat. FL Mal Penis. d 
220; Heyne, Nutt. Plant. v. Nederl. Ind. (1913) 103. 
P. sumatrana Miq. Prodr. Fl. Sum. 255, 592; De Palm. Arc. Ind. 97. 
Calamus mazimus Reinw. in Bl. Cat. Hort. Bog. 59. 
, 
DescripTion.—A_ gigantic climbing palm up to 30 m. high at the flowering 
time. ‘The sheathed stem as thick as the arm. The leaf-sheaths in young plants 
are obliquely truncate at the mouth, have no ocrea or ligula, are clothed in the 
lower covered part with a dense cottony yellowish-white tomentum, and are unarmed 
above; in the adult plant the leaf-sheaths are very thick and woody, armed, at 
least in their uppermost part, along the dorsum, with a line of digitate spines, 
having very thick confluent bases, and slender brittle filiform points. Leaves very 
large; the pinniferous part in the adult plant 2—3 m. long; the petiole short and 
stout (20 em. long in one specimen) concave-convex with acute margins; rhachis 
very robust, in its lower portion 5 em. wide or thereabouts, broadly channelled 
aobve, convex beneath, with flat margins 5 mm. wide, upon which are inserted. the 
leaflets ; the dorsum is armed, like the petiole, with, at first binate, but higher up 
solitary robust spines, changing above into claws; on the margins the spines are 
usually digitate or in small series of 3—6, straight and slightly deflexed ; upwards 
the rhachis becomes obsoletely angular and towards the apex subterete and at the 
same time gradually becomes more powerfully armed with half whorls of very robust 
confluent claws; the cirrus is some metres long and extraordinarily robust, 8—9 mm. 
in diameter where the leaflets cease, and it is uncommonly powerfully armed with 
very sharp blacktipped claws, 8—10 of which are connate by their broad swollen 
