244 SPECIES BLANCOANAE 
ZIZYPHUS Jussieu 
Rhamnus talanai Blanco Fl. Filip. (1837) 171 (sp. nov.) =Zizyphus lati- 
folia Blanco op. cit. ed. 2 (1845) 121 (zieyphus) ; ed. 3, 1 (1877) 217 
non Roxb.=ZIZYPHUS TALANAI (Blanco) comb. nov. 
Rhamnus zonulatus Blanco FI. Filip. (1837) 172=Zizyphus zonulata Blanco 
op. cit. ed. 2 (1845) 120 (Zicyphus) ; ed. 3, 1 (1877) 215—=zZIZYPHUS 
TALANAI (Blanco) Merr. (Z. arborea Merr.). 
Both of Blanco’s descriptious manifestly apply to the same 
species, and Rhamnus talanai Blanco has page priority. The 
form that I described as Zizyphus arborea is the same and must 
be reduced. Fernandez-Villar erroneously reduced the former 
to Zizyphus oenoplia Mill. and the latter to Z. zylopyrus Willd., 
both manifestly erroneous reductions. The species is widely 
distributed in the Philippines, the leaves varying from entirely 
glabrous to rather prominently pubescent. As to Rhamnus tala- 
nat Blanco, his description, while short, applies unmistakably 
to the form as here interpreted and to no other known Philip- 
pine representative of the genus. Blanco’s specimens were from 
San Mateo, Rizal Province, Luzon, a region thoroughly well 
known botanically; the Tagalog name talanai, cited by Blanco, 
seenis to be no longer in use. 
Illustrative specimen from Umingan, Pangasinan Province, 
Luzon, May, 1914 (Merrill: Species Blancoanae No. Joy, 
Rhamnus jujuba Linn.; Blanco Fl. Filip. (1887) 172=zIZYPHUS JUJUBA 
Lam.; Blanco op. cit. ed. 2 (1845) 120, ed. 3, 1 (1877) 215, t. 57. 
This species is occasional in cultivation at low altitudes in the 
Philippines; certainly introduced after the Spanish occupation 
of the Philippines. e 
Iliustrative specimen from Antipolo, Rizal Province, Luzon, — 
October, 1913 (Merrill: Species Blancoanae No. 856). .. 
Rhamnus zizyphus Blanco FI. Filip. (1837) 170, non Linn.=Zizyphus lotus ; oo 
Blanco op. cit. ed. 2 (1845) 121 (Zicyphus) ; ed. 8, 1 (1877) 216,t. 488, 
non Lam.=ZIZYPHUS TRINERVIA (Cav.) Poir. (Z. exserta DC.). 
The species is very common and widely distributed at low alti- — 
tudes in Luzon; it is universally known in the Tagalog prov- 
inces as duclap. Zizyphus exserta was a new name proposed 
by de Candolle for Z. trinervia Poir., but Poiret’s name is valid. © 
Illustrative specimen from Angat, Bulacan Province, Luzon, — 
September, 1913 (Merrill: Species Blancoanae No. 348). 
Rhamnus dalanta Blanco Fl. Filip. (1887) 171 (sp. nov.) =Zizyphus 
dalanta Blanco op. cit. ed. 2 (1845) 121 (Zicyphus) (comb. nov.), ed. 
3, 1 (1877) 217=? ZIZYPHUs sp. 3 
A species of uncertain status, but probably a Zizyphus, and i 
perhaps identical with Zizyphus talanai (Blanco) Merr: The 
