January 11, 1911] New AND NOTEWORTHY RUBIACEAE 973 
BIKKIA Reinw. 
Bikkia grandiflora Reinw. in Blm. Bijdr. 1017, 1825. 
This interesting species was collected among beach lime- 
stone rocks at Mualbual, on the south-west coast of Cebu 
island, in October, 1909. Distributed under number 12025. 
OPHIORRHIZA Linn. 
Ophiorrhiza biflora Elm. Leaf. Philip. Bot. I; 21, 1906. 
This has more recently been collected in the Cuernos 
mountains of southern Negros and in the mountains of 
Benguet, Luzon. 
Ophiorrhiza involucrata Elm. Leaf. Philip. Bot. I; 351, 
1908. 
This characteristic species has recently been collected on 
the island of Polillo and at Infanta, Tayabas province. 
Ophiorrhiza venosa Merr. in Philip. Journ. Sci. II; 
804, 1907. . 
Based upon the author's number 5628, from Mindoro. 
My number 12372 from Sibuyan seems typical and is the 
first to be reported from some other island. 
XANTHOPHYTUM Reinw. 
Xanthophytum fruticulosum Reinw. in Bim. Bijdr., 889, 
1826. Merr. in Philip. Journ. Sci. IV; 328, 1909. 
Mr. Merrill has already reduced Villar’s and Vidal’s species 
to Reinwardts:Javan species which extends through Borneo 
to Luzon. The field-note for my number 12365 from Sibu- 
yan island reads:—A low suffrutescent undershrub; stem te- 
rete, 1 cm. thick, soft, greenish, 1 cm. high, branched 
rom below the middle; branches green, lax, terete, widely 
spreading, sparingly rebranched. Leaves membranous, hori- 
zontal, flat, lucid deep green above, very much paler green 
