K. rogersi. KORTHALSIA. 131 
Latin Driagnosis—Korthalsia celebica Bece. sp. nov. Gracilis, vaginis in ventre 
sphacelato-fibrosis et in dorso spinis tuberculiformibus armatis, ocrea elongata, 
arcte vaginanti, inermi, in parte basilari coriacea, superne reticulato-fibrosa ; 
frondibus brevissime petiolatis ; petiolo callo axillari conspicuo prædito ; segmentis 
ansa crassiusacula suffultis, cuneato-rhombeis,  basilaribus et intermediis subæ- 
qualibus, utrinque virentibus, subtus vix pallidioribus, in margine anteriori obtuse 
undulato-dentatis. 
15. KorrHaLsia Rogersit Bece. n. sp. 
DESCRIPTION.— Very slender. Sheathed stem, 6 mm. in diameter. Leaf-sheaths 
glabrous, finely-striate, quite unarmed. Leaves of the upper part of the fertile 
plant (the only ones present) very small, 25—30 cm. long, including a slender 
finely elawed cirrus, and having 4 leaflets on each side of the rhachis. Ocrea 
elongate, cylindrical very closely sheathing (3 em. long in one specimen), thinly 
membranous and fibrous; petiole very short, broadly channelled above, convex 
beneath.  Rhachis very sparingly and minutely clawed. Leaflets small, 4'5—6 em. 
long, 2°5+4 cm. broad, broadly cuneate-rhomboid with the apex acute or caudicu- 
late, rigid-papyraceous, glabrous and green on the lower surface or else slightly 
paler than on the upper; the margins, from about the middle or from a little 
above it, are rather sharply erosely toothed, have 6—7 very fine but acute main 
nerves; ansae strongly flattened, 4—5 mm. long. Inflorescence apparently formed 
only by a few spreading branches, 15 em. long. (in one specimen) each bearing 
very short branchlets with 1—3 spikes only ; primary spathes unarmed, tubular in 
their lower part, produced above into an ovate acute limb; the spathes of the 
branchlets tubular-infundibuliform, almost truncate at their mouths. Spikes small 
3 em. long (always ?), 5 mm. broad (without the flowers), of a very tomentose 
appearance, the spathels being entirely concealed by the dense wool of the flower- 
bracteoles. Fruit obovate-turbinate, a little attenuate towards the base, roundish or 
slightly flattened above, very minutely mucronate, 18 mm. long, 15 mm. broad ; 
scales not strongly convex, grooved along the centre, straw-yellowish in colour, 
having the apices flattened and of a reddish-brown colour, rather appressed, blun- 
tish or rounded, and the margins conspicuously ciliate-fringed. 
Haprrar—Collected in the Andamans by C. G. Rogers (22. IIT. 1904, No. 143 
Herb. Hort. Cuic. in Herb. Becc.). 
-OpsERVATIONS.—I have seen only the terminal part of this plant bearing two 
leaves, a portion of the inflorescence, and one fruit. 
This apparently distinct species is mentioned by Brandis under K. laciniosa 
Mart. (Indian Trees, p. 719) (Addenda). gs 
If it is not a dwarf form of K. laciniosa, it certainly represents one of the 
smallest species of the genus, having the dimensions of K. tenuissima. 
It is characterized by its very slender stem. by the small leaves having rhom- 
boidal subconcolorous leaflets, by its ,elongate closely sheathing ocreae, by the small 
tomentose spikes, and by the relatively large globose fruit. 
PLare 83.—(Lower figure) Korthalsia Rogersi Bece.—The entire type specimen 
in Herb. Beccari. 
\ 
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ANN. Roy. Bor. GARD., CALCUTTA, VoL. XII. 
