May 31, 1919] Zingibebaceae of the Sobsogon Peninsula 2969 



except toward the top and the 2 or 3 apical teeth; pedi- 

 cel 2 cm. long or less, glabrous, whitish; ovary more 

 or less ciliate about the apical portion, otherwise glabrous, 

 bright and yellow, bearing several linear glabrous cla- 

 vate appendages 5 mm. in length; corolla creamy white; 

 tube 3.5 cm. long when fully developed, glabrous, grad- 

 ually thickened toward the top; lateral lobes spreading, 

 oblong, at least 2 cm. long, one half as wide; lip 3 cm. 

 long, narrowed toward the base, the lamina portion ellip- 

 tically oblong, all glabrous; free portion of filament 1 cm. 

 long, 4 mm. wide, glabrate, much compressed; anther 

 linear, 1.75 cm. long, pulverulent on the back, 3 mm. 

 wide, with a rounded crest at the apex, the cells bifid 

 at both ends; style filiform, puberulent toward the thickened 

 apex; stigma 3 mm. across the flattened portion, its 

 rim minutely puberulent. 



Type specimen number 16144, A. D. E. Elmer, Iro- 

 8in (Mt. Bulusan), Province of Sorsogon, Luzon, May, 

 1916. 



Discovered only a few clumps in damp soil of steep 

 wooded slopes at 1500 feet altitude. 



Primarily distinguished from Alpinia tie gam (Presl) 

 K. Schum. by its congested inflorescence and infrutes- 

 cence, by the much stouter rachis, and by the sessile 

 not pedicellate floral bundles which are arranged on 

 all sides of the rtchis rather than in two alternating 

 rows, 



Alpinia Iongipetiolata Elm. n. sp. 



Rather few stemmed clusters. Stem green, terete, 

 thickened at the base, less than 1.25 cm. thick, 1.75 

 m. high, leaflet bearing above the middle, erect from 

 the base, recurved toward the top. Rhizome 1.25 cm. 

 thick, short, also terete, occasionally branched, covered 

 with brown bracts. Leaflets horizontal especially toward 

 the twistingly recurved tips, pale green beneath, mar- 

 gins wavy, thinly coriaceous, in alternating rows 3 to 

 5 cm. apart, nearly flat, slightly paler green beneath, 

 glabrous, oblong to searcely ovately oblong, obtuse or 

 acute at the base, gradually tapering toward the sharply 

 caudate point which is usually twisted, 20 to 30 cm. long 

 without the petiole, 4 to 7 cm. wide across the middle 

 or below it, edges not hairy; midrib stout, raised beneath, 

 narrowly grooved above, glabrous, curing a lighter gray. 

 fluted; lateral nerves numerous and faint, much ascending; 

 petiole varying from 2 to 5 cm. long, rigid, suberect, 

 in the dry state gray as the midvein, glabrous, obscure- 



