354 The Philippine Journal of Science 1919 
Apparently a sterile specimen collected by Hutchinson in 
Mindanao, For. Bur. 4818, also belongs to this species. In this 
specimen the sheathed stem is only 8 to 9 mm in diameter, and 
the sheaths are provided with some very small, scattered, tuber-. 
culiform spines. 
CALAMUS MICROSPHAERION Becc. var. SPINOSIOR Bece. var. nov. 
Sheathed stem 2 to 3 cm in diameter; leaf-sheaths densely 
armed with scattered rather robust spines 5 to 12 mm long and 
having broad subbulbous bases. Leaflets bristly-spinulous on 1 
to 3 costae above. 
PALAWAN, Taytay, Merrill 9858 (with d flowers), 9247 (with fruits). 
80. CALAMUS RAMULOSUS Bece. in Perk. Fragm. Fl. Philip. (1904) 
46, Webbia 1 (1905) 349, in Ann. Bot. Gard. Calcutta 11 (1908) 
454, t. 205. 
LUZON, Tayabas Province, Guinayangan, Merrill 2070. 
31. CALAMUS VIDALIANUS Becc. in Rec. Bot. Surv. Ind. 2 (1902) 212, 
Webbia 1 (1905) 850, Ann. Bot. Gard. Calcutta 11 (1908) 464, 
t. 121, and Suppl. 114, t. 64. 
Calamus horrens ? Vidal Rev. Pl. Vasc. Filip. (1886) 280 (not of 
Blume). 
Luzon, Tayabas Province, Unisan, Vidal 933, in Herb. Kew. (type 
specimen) ; Guinayangan, Bur. Sci. 13214 Ramos (db specimen in flower) : 
Rizal Province, Montalban, Loher 7087 in Herb. Kew., Tagalog bogtong (¢ 
specimen in flower): Bataan Province, For. Bur. 20948 De Leon: Nueva 
Ecija Province, For. Bur. 22162 Alvarez (dé). 
32. CALAMUS SIPHONOSPHATHUS Mart. Hist. Nat. Palm. 3: 342; 
Walpers Ann. 3 (1853) 491, 5 (1858) 832; Miq. FI. Ind. Bat. 3 
(1855) 187; Becc. in Rec. Bot. Surv. Ind. 2 (1902) 218, Webbia 
1 (1905) 350, Ann. Bot. Gard. Calcutta 11 (1908) 471, and Suppl. 
115. 
Calamus sp. Vidal Rev. Pl. Vasc. Filip. (1886) 330 (No. 931 and 
1942). 
Calamus siphonospathus is a very variable plant; it is, how- 
ever, easily distinguishable by its spadices sheathed in gradually 
diminishing, subimbricate, loosely-tubular, subinflated spathes; 
by their dense and short, supradecompound, female inflorescen- 
ces; and'by the very small fruits. The inflated spathes of this 
Calamus are, apparently, ant-harboring organs. 
CALAMUS SIPHONOSPATHUS Mart. forma TYPICA Becc. in Ann. Bot. 
Gard. Caleutta 11 (1908) 473. 
Luzon, “Manila,” Perrottet in Herb. Delessert: Rizal Province, Bosoboso, 
Merrill 1891, Loher 1364 in Herb. Kew.; Montalban, Loher 7089 in Herb. 
Kew. (2) and 7077 (d): Isabela Province, Cabagan River, For. Bur. 18558 
Alvarez (3), Negrito name jusi. 
