IX, C, 1 Merrill: Plants of Guam 59 
from Guam, and the latter has been reduced to Gaudichaud’s species by 
Kiikenthal. Presl’s description applies very closely to the specimen cited 
above, so that I consider that there is no doubt but that Carex densiflora 
is an exact synonym of C. fuirenoides Gaudich, as the specimen cited above 
has been determined by Kiikenthal. 
CYPERUS Linnaeus 
CYPERUS COMPRESSUS Linn. Sp. Pl. (1753) 46. 
McGregor $81, Mrs. Clemens s. n., G. E. S. 38. 
Tropics of the world. 
CYPERUS DIFFORMIS Linn. Cent. Pl. 2 (1756) 6; Safford 254. 
G. E. S. 45, 236. 
All tropical countries. 
CYPERUS FLABELLIFORMIS Rottb. Descr. Nov. Pl. (1778) 42. 
G. E. S. 210, probably from cultivated specimens. 
A native of Africa, now cultivated in most warm countries. 
CYPERUS ROTUNDUS Linn. Sp. Pl. (1758) 45; Safford 254. 
McGregor 445, 529, along roadsides. 
Throughout the tropics. 
CLADIUM P. Browne 
CLADIUM GAUDICHAUDII W. F. Wight ex Safford in Contr. U. S. Nat. 
Herb. 9 (1905) 230. 
Baumea mariscoides Gaudich. Bot. Freye. Voy. (1826) 417. 
Cladium mariscoides F.-Vill. Novis. App. Fl. Filip. (1882) 309, non Torr. 
G. E. S. 258, from high land at Asan, January, 1912. 
A species known only from Guam; allied to the Hawaiian Cladiwm 
meyenii (Kunth) Benth. & Hook. f. 
Dr. Stapf of the Royal Botanic Gardens at Kew, England writes me 
that he has come to the conclusion that Cladiwm is better treated as re- 
stricted to the American Cladium jamaicense and its immediate allies, and 
that Bawmea and Vincentia deserve generic rank, in which case this species 
should be known as Baumea mariscoides Gaudich. 
CLADIUM AROMATICUM sp. nov. § Eucladium. 
Caespitosum, tenerum, circiter 60 cm altum; foliis angustis, 
usque ad 40 cm longis, numerosis, in siccitate teretibus, glabris, 
laevis; paniculis laxis, 10 ad 25 cm longis, ramis primariis 
paucis, distantibus, adscendentibus; spiculis oblongo-lanceolatis, 
brunneis, rectis, 5 mm longis, floribus ¢ 1 vel 2; nuculis sub- 
globosis, erostratis, sessilibus. 
A densely tufted, glabrous, slender plant about 60 cm high, 
the stems about 1 mm in diameter, the roots, when fresh, rather 
strongly aromatic, the root-stock rather stout, the basal sheaths 
somewhat inflated, rather broad, reddish-brown. Leaves mostly 
basal, numerous, slender, apparently flat when fresh, involute 
and terete when dry, 30 to 40 cm long, less than 1 mm in 
