X. C, 5 
Merrill: Philippine Plants, XII 
291 
2 mm long, obtuse or acute, slightly ciliate at the apex, dark- 
colored, not glandular. Petals 3, hyaline, linear-oblanceolate, 
about 1.5 mm long, slightly ciliate at the apex, not glandular. 
Ovary 3-celled; style-arms 3. Seeds minutely striate. 
Luzon, Benguet Subprovince, Trinidad River, Bur. Sci. 5544 Ramos 
(type), December, 1908; Baguio, Merrill 7748, May, 1911, Williams 1004, 
October, 1904; Lepanto Subprovince, Balili, Merrill 4646, November, 1905. 
This species is apparently distinct from all described ones, characterized 
especially by the corolla of the male flowers being reduced to a single 
ciliate-cleft petal, consisting of several jointed filiform lobes. It appears 
to fall in the section defined by Ruhland under section 5 of his key. 
ERIOCAULON ALPESTRE Hook. f. & Th. ex Koern. in Miq. Ann. Mus. 
Lugd. Bat. 3 (1867) 163; Ruhl. in Engl. Pflanzenreich 13 (1903) 95. 
Mindanao, District of Davao, Mount Apo, Copeland 1431, October, 1904, 
altitude about 1,800 meters, seen in only one place. 
Mountains of India to Indo-China, China, and Japan; not previously 
reported from the Philippines. 
ERIOCAULON CINEREUM R. Br. Prodr. (1810) 254; Benth. FI. Austral. 
7 (1878) 193. 
Eriocaulon sieboldianum Sieb. & Zucc. ex Steud. Syn. 2 (1855) 272; 
Ruhl. in Engl. Pflanzenreich 13 (1903) 111. 
Luzon, Subprovince of Abra, .in rice paddies, For. Bur. 16458 Bacani: 
Subprovince of Bontoc, in rice paddies, Vanoverbergh 602: Province of 
Rizal, Caloocan, Phil. PI. 293 Merrill (distributed as E. merrillii) , Bur. Sci. 
9501 Robinson (pro parte). 
This very widely distributed species does not appear to be common in 
the Philippines; at least it has been collected but a few times. I can see 
no valid reason for ignoring Robert Brown’s specific name, as it is certainly 
valid and antedates the one accepted by Ruhland ( E . seiboldianum) by 
forty-five years. 
ERIOCAULON MERRILLII Ruhl. in Perk. Frag. FI. Philip. (1904) 136. 
This species was based on Merrill 572, collected in the Island of Culion. 
As described by Ruhland, one of the special characters by which the species 
is distinguished from allied forms is the absence of sepals in the female 
flowers. This character alone does not appear to be a valid one, for in 
the original collection, two sheets of which are in our herbarium, most of 
the heads have female flowers with two sepals, while other flowers are 
without them. The species, as interpreted by me, is the commonest and 
most widely distributed one in the Philippines, and appears to me to be very 
closely allied to, if not identical with, Eriocaulon truncatum Ham. I would 
refer to it the following specimens: 
Luzon, Province of Tarlac, Merrill 3624: Province of Zambales, For. 
Bur. 8153 Curran & Merritt: Province of Nueva Ecija, Bur. Sci. 5277 
McGregor: Province of Rizal, vicinity of Manila, Merrill 7122, Bur. Sci. 
9500, 9501 (pro parte) Robinson, McGregor s. n. Polillo, Bur. Sci. 9031 
Robinson. Culion, Merrill 572 (cotype). Mindanao, Province of Surigao, 
Piper 534: District of Lanao, Camp Keithley, Mrs. Clemens 909 (pro parte), 
«. n. 
