192 RIDLEY. 



1. C. speciosus Sm. in Trans. Linn. Soc. 1 (1800) 249; Roxb. Fl. Ind. 1 

 (1820) 58; Blume Enum. PI. Jav. 1 (1827) 61; Wight Icon. t. 2011,;. Horan. 

 Monogr. (1862) 37; Baker in Hook. f. Fl. Brit. Ind. 6 (1892) 249; K. Schum. 

 in Pflanzenreich 20 (1904) 398; Ridl. Mater. Fl. Malay Penin. 2 (1907) 24. 



C. arabicus Linn. Sp. PI. (1753) 2, in part. 



C. crispiflorus Stokes Mat. Med. 1 (1812) 75. 



0. glabratus Reichb. f. in MoessL Handb. ed. 2, 1 : 8, non Sw. 



C. vaginalis Salisb. in Trans. Hort. Soc. 1 (1812) 277. 



O. Loureiri Horan. Monog. (1862) 39. 



C. focniculaceus Noronha in Verb. Bataav. Genootsch. 5 ( 1795) 12. 



C. nipalensis Rose. Monandr. PI. (1828) t. 80; Horan. Monog. (1862) 37;Regel 

 Gartenrl. 4 (1855) 341, t. 139. 



Banksia speciosa Koen. in Retz. Obs. 3 (1783) 75. 



Amomum hirsutum Lam. 111. Gen. 1 (1791) t. 3. 



A. arboreum Lour. Fl. Cochinch. 1 (1790) 9. 



Hellenia grandiflora Retz. Obs. 5 (1786) 18. 



Stems 2 to 3 m tall;, 1 to 2.5 cm thick, covered with dull-brown 

 sheaths, often branched above and spiral. Leaves oblong or lanceolate, 

 acuminate, 15 to 20 cm long, 6 to 7 cm wide, the upper surface glabrous, 

 dark-green, beneath more or less pubescent; petiole 3 to 6 mm long; ligule 

 short, annular, reddish. Spike terminal, ovate or oblong, 7 to 13 cm 

 long. Bracts ovate, mucronate, not pungent, red, 2 cm long, glabrous 

 or pubescent. Bracteole shorter, lanceolate, acute. Calyx short, cartila- 

 ginous, red, the lobes very short. Corolla-tube short, the lobes equal, 

 mucronate, white, often rose-tinted. Lip very large, obovate, convolute, 

 9 cm long and wide, white with usually a longitudinal central yellow bar. 

 Stamen 4.5 cm long, the filament broad, hairy on the back, the crest 

 oblong, acuminate, orange beneath. Capsule 1.3 cm long, woody, red. 

 Seeds small, black, with a white aril, 4 or 5 in each cell. 



Luzon, Province of Cavite-Batangas, For. Bur. 767/6 Merritt; Province of Bataan, 

 For. Bur. 196 Barnes, Elmer 6707, For. Bur. 2771 Meyer, Williams 312, For. 

 Bur. 21,60 Borden: Province of Rizal, For. Bur. 31/26 Ahern's collector: Province 

 of Tayabas, Gregory 80, Whitford 830: Province of Batangas, Guzner 21. Leyte. 

 Elmer 7363. Masbate, Merrill 3393, For. Bur. 1696 Clark. Cebu, Bur. Soi. 

 1727 McGregor. Mindanao, Lake Lanao, Mrs. Clemens. Basilan, Hallicr s. n. 



Var. argyrophyllus Wall. Cat. 6555; Baker in Hook. f. Fl. Brit. Ind. 6 (1890) 

 250; Ridley Mater. Fl. Malay Penin. 2 (1907) 24. 



Costus sericeus Blume Enum. PI. Jav. 1 (1827) 62. 



A more slender woodland form, with more branched stems, the leaves 

 more pubescent, often silky on the back. Bracts and calyx less brightly 

 colored. Flower-spikes and fiWers smaller. Lip without the yellow 

 central bar. AVhole flower usually more distinctly pink-tinted. 



Mindanao, District of Davao, Gopeland 1,1,8. Basilan, DeVore & Hoover 27. 

 Luzon, Province of Bataan, Bur. Sci. 1588 Foxworthy. Negkos, For. Bur. 5592 

 Everett. 



India to Ceylon, Pegu, Tonkin, Formosa, the Malay Peninsula and Archipelago 

 to New Guinea. 



Considering the wide distribution of this conspicuous plant, it seems to vary 

 but little, though Schumann describes six varieties, of which the woodland form of 



