Vol. 2 ARISTOLOCHIACEAE 119 
DOUBTFUL SPECIES 
CYNOMORIUM PHILIPPENSE Blanco FI. Filip. (1837) 665, ed. 2 (1845) 464, 
ed. 3, 3 (1879) 72; Hichl. in DC. Prodr. 17 (1873) 123; Merr. Sp. 
Blancoanae (1918) 134. 
The description apparently refers to a Balanophora, but its status is 
otherwise entirely indeterminable from the very imperfect description. 
ARISTOLOCHIACEAE 
1. ARISTOLOCHIA Tournefort 
ARISTOLOCHIA ELEGANS Mast. in Gard. Chron. (1885) 2: 301; Merr. 
Fl. Manila (1912) 186. 
Luzon (Cagayan, Manila), Merrill, F. B. 18597 Alvarez. A native of 
tropical America, introduced in the Philippines and cultivated only. 
ARISTOLOCHIA FOVEOLATA Merr. in Philip. Journ. Sci. 13 (1918) 
Bot. 280. 
Catanduanes, B. S. 30370 Ramos. In damp forests along small streams 
at low altitudes. Endemic. 
ARISTOLOCHIA HUMILIS Merr. in Philip. Journ. Sci. 13 (1918) Bot. 9. 
Luzon (Tayabas, east coast), B. S. 19423 Ramos, 28838, 28480 Ramos & 
Edaro. In damp forests along streams at low altitudes. Endemic. 
Local name: Tangotong-gibat (Tag.). 
ARISTOLOCHIA LEYTENSIS Merr. in Philip. Journ. Sci. 10 (1915) 
Bot. 4. 
Leyte, Samar, B. S. 15201, 24558 Ramos, Wenzel 376. In thickets and 
forests near streams at low altitudes. Endemic. 
Local name: Maraburakan (S. L. Bis.). 
ARISTOLOCHIA MACGREGORII Merr. in Philip. Journ. Sci. 5 (1910) 
Bot. 174. 
Babuyan Islands (Dalupiri), B. S. 10656 McGregor. Endemic. 
ARISTOLOCHIA MEMBRANACEA Merr. in Philip. Journ. Sci. 14 (1919) 
381. 
Luzon (Ilocos Norte), B. S. 33338 Ramos. On dry slopes, altitude about 
350 m. Endemic. 
ARISTOLOCHIA MINDANAENSIS Warb. in Perk Frag. Fl. Philip. (1905) 
169. 
Mindanao, Warburg 14772, Williams 2692, Weber 1074. In open 
forests at low altitudes; very closely allied to Aristolochia tagala Cham. 
Endemic. 
ARISTOLOCHIA PHILIPPINENSIS Warb. in Perk. Frag. Fl]. Philip. (1905) 
170. 
Luzon (Cagayan, Isabela, Ilocos Norte, Ifugao, Benguet, Pangasinan, 
Zambales, Rizal, Tayabas, Laguna, Sorsogon), Palawan, Bancalan, Negros. 
In thickets at low and medium altitudes, ascending to about 900 m in 
Benguet. Endemic. 
Local name: Barubé (Neg.). 
