164 ANNALS OF THE ROYAL BOTANIC GARDEN, CALCUTTA. M. sagus. 
Figs. 9—11. Metroxylon Sagus Zottb.—Fig. 9. Vertical section of a seed normally 
evolute.—Fig. 10. Vertical section of a seed in which the embryo passes 
through the entire wall of the albumen into the chalazal cavity.—Fig. 11. 
Vertical section of a seed having the albumen completely perforated by the 
intrusions of the integument. All figures of natural size. 
Figs. 12—14. Metroxylon squarrosum Bece.—Figs. 12—18. Two flower buds, en- 
larged 7 diameters.—Fig. 14. Vertical section of a seed (nat. size). 
Fig. 15. Metroxylon Rumphii var. buruense Zecc.— Vertical section of a seed from 
one of the fruits of Sagus genuina collected by Labillardiere in Buru, after it 
had been softened by boiling (Nat. size). / 
Fig. 16. Metroxylon salomonense Jecc.— Vertical section of a seed, from Rechinger’s 
collections in New-Guinea (nat. size). 
Fig. 17. Metroxylon  bougainvillense ZBece.—Vertical section of a seed. from an 
immature fruit after. it had been softened by boiling. From  Rechinger's 
collections in Bougainville Island. 
DESCRIPTIONS OF SPECIES, 
1. MertRroxyLon Sacus Rottbél in Wi Saml. K. Danske} Vidensk. Schrift. ii, 
527, t. 1; Miq. Fl. Ind. Bat. ñi, 147; Bece. in Nuovo Giorn. Bot. Ital. 
ii, 29 and in Denkschriften ni K. sd. d. Wissenseh. math. naturw. 
Kl. Wien, Ixxxiv, (1913) 62, f. 6; Hook. f. Fl. Brit Ind. vi, 481. 
M. inerme Mart. Hist. Nat. Palm. iii, 215. : 
M. laeve Mart. l. c. 214. . 
M. hermaphroditum Hassk. in Tijdschr. Nat. Geschied. ix, 175 and Cat. 
Bogor. 65. 
| Sagus levis Rumph. Herb. Amb. i, 76; Blume Rumphia, ii, 147, t. 86, 126, 
127 (Sagus Rumphii); Griff. in Cale. Journ. Nat. Hist. v, and 20, Palms 
Brit. Ind. 24 (not. t. CLX&XXII). 
Sagus Koenig Griff. I. c. 22 t. CLXXXI. 
Sagus inermis Roxb. Fl. Ind. iu, 623. 
Sagus genuina è levis Giseke, Prol. in Ord. Nat 94. 
_Description.—(Forma typica)—Not differing in general aspect from M. Rumphit 
. hereafter described, but with leaves (leaf sheaths, petiole and rhachis) and spathes, pri- 
mary and secondary not spinous. Leaflets linear-ensiform, the mesials and largest of 
the full grown plants, 1'5 m. long, and 8 em. wide or thereabouts, very gradually 
acuminate above to a slender and at times filiferous tip; the mid-costa very strong, 
acute and smooth on the upper surface or only very slightly spinulous near the apex, 
underneath furnished with a continuous line of chatfy scales; the margins smooth or 
with a few rudimentary spinules ; the upper leaflets gradually curtailed, less acumi- 
nate, and with rigid tips (apparently only the lower leaflets have the apex filiferous). 
Spadices exactly. as in M.. Rumphi, but having all the spathels (primary and 
secondary) quite spineless. Spikes 10—13 cm. long, and 12—13 mm. in diameter 
(when the flowers have fallen), or a little more slender than those of M. Rumphi ; 
when old, and without flowers the spikes are of a less tomentose appearance, 
having the spathels a little more produced beyond the villosity of the floral brac- 
teoles than in M. Rumphii. Male and female full grown flower buds 6—7 mm. long, 
