OF THE GENUS ARENARIA. 387 
A. serpens, var. Orizabe, Rohrb. =A. bryoides. 
Geogr. limits.—N. & W. Mexico: Cerro Leon in prov. of 
Guanajuato. E. Brazil. 
S. S. Chile: in the Andes of the district of Chillan 
(A. multicaulis, Phil.). 
Subsectio 4.—F lores axillares solitarii, et terminales 
subconferti. 
81. A. MICROPHYLLA, Phil. in Linnea, xxviii. p. 673 (1856); 
Rohrb. in Linnea, xxxvii. (1871-72) p. 270 (syn. A. serpens, 
tar. andicola). 
Glabra. Caules breves ascendenti-erecti, non dense cæspitosi. 
Folia minima oblonga obtusa parüm remota. Sepala ovata 
obtusa. Petala alba, calycem superantia. Semina lenticulari- 
reniformia. 
Reduced by Rohrbach to A. serpens var. andicola,—' forma 
foliis minutis, floribus confertis." Allied rather to the next 
species, from which it is at once distinguished by the obtuse and 
more distant pairs of leaves.  Philippi's brief description scarcely 
serves to distinguish the plant. 
Hab. Chile: in the Andes of prov. of Coquimbo. 
82. A. PALUSTRIS, Naud. in C. Gay, Fl. Chilena, i. p. 271 
(1845); Rohrb. in Linnea, xxxvii. p. 257 (1871-72). 
P. patagonica, Phil. (sp.) in Linnea, xxviii. p. 671 (1896); 
Reiche d Johow, Fl. de Chile, p. 192 (1896). 
Syn. A. fastigiata, Phil. in Linnea, xxviii. p. 673 (1856). 
Though included in the flora of Chile mentioned above, this 
‘atiety is found at the lake of Nahuelhuapi in the Argentine 
Hepublie, on the other side of the Andes. The specific type in 
Chile always occurs on the borders of lakes. Var. f seems to 
more widely distributed than the type; and the limits given 
below all refer to localities in which var. 6 occurs. In Chile 
pu riety has been recorded under the name of A. fastigiata, 
Geogr. limits.—N. Chile: district of Linares. 
S. 4 E. Argentina: Lake Nahuelhuapi. |. 
W. Chile: lake of Llanquihué in prov. of Valdivia. 
“INN. JOURN.— BOTANY, VOL. XXXIII. 20 
