TWO NEW SPECIES OF SYZYGIUM (MYRTACEAE) FROM ULTRAMAFICSOILS IN NORTHEASTERN MINDANAO, PHILIPPINES, WITH NOTES ONTHREE OTHER RARE SPECIES

Two new species of Syzygium (Myrtaceae), S. omissum Mansibang & Fernando and S. parvipomum Fernando & Mansibang from the ultramafic forests of Surigao del Norte, Mindanao Island, Philippines, are formally described. The subgeneric placement of the species is discussed, and an identification key for species of the subgenus Perikion with an axillary to ramiflorous inflorescence is presented. Notes on three ‘lost’ Syzygium species, namely S. filipes Merr., S. siderocolum (Merr.) Merr. and S. surigaense (Merr.) Merr., are provided, and lectotypes are assigned for Eugenia siderocola (basionym of S. siderocolum) and E. surigaensis (basionym of S. surigaense).