20,4 Merrill: Noteworthy Philippine Plants, XVII 465 



MiNDORO, Mount Calavite, Bur. Set. 39279 (type), 39398 

 Ramos, April, 1921. On forested slopes, altitude 600 to 700 

 meters. 



A species belonging in the group with Urophyllum acumi- 

 rvatum Merr., but with broader, more numerously nerved, 

 differently shaped, not caudate-acuminate leaves, and nearly 

 glaJ)rous throughout. 



ARGOSTEMMA Wallich 

 ARGOSTEMMA ARACHNOSUM sp. nov. 



Herba simplex, suberecta, usque ad 20 cm alta, subtus foliis 

 ad costa nervisque dense arachnoso-villosis ; foliis numerosis, 

 oblongis ad oblongo-ellipticis, 4.5 ad 8 cm longis, in paribus 

 subaequalibus, obtusis ad brevissime acuminatis, nervis utrinque 

 circiter 8, subtus perspicuis; inflorescentiis longe pedunculatis, 

 cymosis, 1.5 ad 3 cm longis, arachnoso-villosis, pedunculo usque 

 ad 9 cm longo, glabro; floribus 5-meris, pedicellis villosis, 10 

 ad 12 mm longis. 



A simple, suberect herb, up to 20 cm high, the stems usually 

 decumbent below, about 3 mm in diameter, the younger parts 

 more or less villous or hirsute. Leaves numerous, in scattered 

 pairs, those of each pair equal or subequal, oblong to oblong- 

 elliptic, obtuse or very shortly acuminate, membranaceous or 

 chartaceous, 4.5 to 8 cm long, 1.8 to 2.5 cm wide, the base 

 acute to rounded, the upper surface usually black when dry, 

 sparingly villous along the midrib 'or entirely glabrous, the 

 lower surface very conspicuously and densely villous with dirty- 

 brown, crisped, cobwebby hairs on the midrib, nerves, and re- 

 ticulations; lateral nerves about 8 on each side of the midrib, 

 prominent on the iower surface ; petioles 1 to 2 cm long, villous ; 

 stipules oblong, about 8 mm long, 4 mm wide, acuminate. In- 

 florescences terminal, cymose, the cymes rather densely flowered 

 and umbelliform, villous, 1.5 to 3 cm long; peduncles elongated, 

 glabrous, 5 to 9 cm long, often with a whorl of membranaceous, 

 oblong-ovate, 4 to 5 mm long bracts at about the middle, the 

 bracts subtending the branches oblong to oblong-lanceolate, 2.5 

 to 5 mm long, the bracteoles broadly ovate, obtuse, 2 mm long. 

 Flowers 5-merous, their pedicels villous, 10 to 12 mm long. 

 Calyx about 2.2 mm in diameter, densely villous, the lobes broad- 

 ly ovate, spreading, glabrous inside, 1 mm long. Fruit about 

 4 mm long and wide, somewhat cup-shaped, the calyx limb well 

 produced above the fruit. 



