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PHILIPPINE PLANTS, IX. 345 
the index in the last volume of Rumphius' work. So far as sterile material 
is comparable with the figure, I consider Rumphius' delineation to be an 
excellent representation of the Philippine plant. Coleua amhoinicus Lour. 
is the type of the genus. 
MESON A Blume. 
MESONA CLAUSA sp. nov. 
Herba erecta, stricta, vix ramosa, circiter 30 cm alta, caulibus 
foliis inflorescentiisque plus ininusve dense pallide f ulvo-villosis ; 
foliis petiolatis, oblongis, usque ad 6 cm longis, obtusis vel 
acutis; inflorescentiis interruptis circiter 15 cm longis, vertlcillis 
densis, subglobosis; calycibus sub fructu plus minusve inflatis, 
8 mm longis, 2-labiatis, labiis integris, inferioribus orbicula- 
ribus OS calycis claudentibus, superioribus oblongis. 
An erect unbranched herb about 30 cm high. Stems rather 
stout, obscurely angled, rather densely covered with pale-fulvous, 
villous hairs. Leaves oblong or narrowly oblong, 5.5 to 6 cm 
long, 1 to 1.5 cm wide, apex acute or obtuse, base acute, the 
margins somewhat crenulate, both surfaces more or less villous, 
especially on the nerves and midrib; nerves ascending, about 
8 on each side of the midrib; petioles 5 to 10 mm long, those 
of the basal leaves sometimes 2 cm in length. Inflorescence 
interrupted, about 15 cm long, the whorls dense, globose, 2 to 
2.5 cm apart, the upper ones closer, about 1.5 cm in diameter, 
the rachis densely villous, the bracts subtending the whorls 
oblong-ovate, brown, reflexed, more or less villous, acuminate, 
0.8 to 1.5 cm long, the lowermost ones subfoliaceous. Calyx just 
after anthesis 3 mm long, densely villous, in fruit accrescent, 8 
mm long, slightly inflated in the middle, the mouth oblique, closed 
by the orbicular lower lip which is 2 mm in diameter and 
villous on the outside, entire, the upper lip oblong, 1,5 mm long, 
obtuse, not at all lobed or toothed, villous on the outside. Co- 
rolla unknown. 
CuLlON, in damp, open grass lands, Merrill UGO, December 13, 1902. 
A species well characterized by its entire calyx-lips, the lower one 
orbicular, appressed to and quite closing the mouth of the calyx-tube. I 
have found on the specimen a single badly withered corolla showing the four 
stamens, the upper two filaments appedanged at the base, characteristic of 
the genus. 
POGOSTEMON Desf. 
POGOSTEMON CABLIN (Blanco) Benth. in DC. Prodr. 12 (1848) 156; 
Mip. FL Ind. Bat. 2 (1856) 964; F.-Vill. Novis. App. (1880) 164; 
Vid. Rev. PL Vase. Filip. (1886) 213; Prain in Journ. As. Soc. 
Beng. 74* (1907) Extra Number 708, Kew Bull. (1908) 78. 
Mentha cablin Blanco Fl. Filip. (1837) 472. 
