17,6 Merrill: Studies on Philippine Rubiaceae, IV 471 
Javan material in some particulars, but may be referable to this 
species. 
TARENNA EUCRANTHA (Elm.) comb. nov. 
Pavetta eucrantha Elm. Leaf!. Philip. Bot. 3 (1911) 1015. 
Stylocoryne incerta Elm. op. cit. 1 (1908) 33, non Tarenna incerta 
Koord. & Val. 
The type of this is Elmer 12494, from Sibuyan. The same 
species is represented by the following specimens : Leyte, Elmer 
7054 , distributed as Pavetta indica Linn. Samar, Bur. Sci. 
24389, 24559 Ramos. Mindanao, Zamboanga District, Ahern 
384: Lanao District, Mrs. Clemens 435, 584, 652, and three sheets 
without number : Agusan Subprovince, Weber 1006, Elmer 13988. 
This species strongly simulates Pavetta, but the flowers are 
constantly 5-merous. the calyx-teeth are unusually prominent, 
the ovary cells are 2-ovulate, and the fruits are usually 4-seeded. 
On account of its ovule and seed characters it cannot be referred 
to Pavetta. 
TARENNA PALAWANENSIS (Elm.) comb. nov. 
Pavetta palawanensis Elm. Leafl. Philip. Bot. 4 (1912) 1344. 
In a previous paper on Philippine Rubiaceae 10 I interpreted 
this species on the basis of the specimens there cited, giving a de- 
scription based on the specimens. At that time I had not seen 
Mr. Elmer’s material ; the species I described is totally different 
from that characterized by Mr. Elmer, and is Pavetta phanero- 
phlebia Merr., page 478. The type of Pavetta palawanensis Elm. 
is Elmer 12940, and an examination of it shows that the ovary 
cells are biovulate, and that it is hence a Tarenna, not a Pavetta. 
The flowers that I have seen are 5-merous, not 4-merous as de- 
scribed by Elmer. The corolla-tube is less than 4 mm long, and 
the lobes are about 6 mm in length. The species is very closely 
allied to Tarenna eucrantha (Elm.) Merr., but its flowers are less 
than one-half as large as are those of the latter species, while its 
calyx teeth are much less prominent. 
TARENNA SCABERULA (Merr.) comb. nov. 
Pavetta scaberula Merr. in Philip. Journ. Sci. 10 (1915) Bot. 118. 
A reexamination of this species shows that the ovary cells 
are biovulate, while the fruits are normally 4-seeded. The 
10 Philip. Joum. Sci. 10 (1916) Bot. 117. 
