OF THE GENUS ARENARIA. 365 
A, tetraquetra, All. Fl. Pedem. ii. p. 115. 
A. tetraquetra var. aggregata, Reichb. Syst. Plant. ii. p. 359. 
Gypsophila aggregata, Linn. Sp. Plant. p. 400. 
Plinthine aggregata, Reichb. Ic. Fl. Germ. Helv. 4952, 
Rubeola montana, Barrel. Pl. Gall. Hisp. Ital. 595. 
Stellaria muralis, Link, Enum. Hort. Berolin. i. p. 429. 
44. A. PSEUDARMERIASTRUM, Rouy, Exc. Bot. in Bull. Soc. 
Dot. France, xxix. p. 46 (1882) ; Willk. Prodr. Fl. Hisp., Supplem. 
p. 277. 
Frutieulosa, glauca. Caules 25-50 centim., elongati numerosi 
teretes graciles intricati fere filiformes, adscendentes vel erecti 
pruinoso-puberuli, Folia brevia coriacea, basi vaginantia connata 
lineari-subulata cuspidata patula, supra canaliculata glabra, 
subtus convexo-carinata puberula, nervo calloso valido margine 
incrassato-cincta. Flores in capitula densa congesti; bractesw 
ovali-lanceolatee mucronate, margine ciliate, dorso nervoso- 
striate puberule, cum summis foliis involucrate. Sepala 
elongato-lanceolata subulato-acutata nervoso-marginata, dorso 
hervoso-striata puberula. Petala spathalata, calycem &quantia. 
Anthere albide. Capsula valvis 6 dehiscens. Semina tuber- 
eulata. 
Distinguished from the preceding by its glomerules of flowers 
half the size, petals equalling the sepals, leaves shorter and less 
recurved, and the flowering-stems numerous and intricate. 
Hab, Spain : Valldigna, in prov. of Valencia (Rouy, 1880). 
b. Petala calyce breviora. 
a. Species annus vel biennes (i. e. monotoce). 
t Flores eymosi, in ramulis interdum depauperati ad 
florem unieum reducti. 
45. A. sERPYLLIFOLIA, Linn. Sp. Plant. p. 423 (1753); 
Willk. § Lange, Prodr. Fl. Hisp. iii. p. 620. 
aa. Eglandulose. Pedicelli calyce 2-3-plo longiores. 
^. scabra, Ledeb. Fl. Rossica, i. p. 869 (1842). 
Glauca, totà pube minutissimá scabrá. Pedicelli fructiferi 
erecti, 
B. alpina, Gaud. Fl. Helvetica, iii. p. 192 (1880) ^ ——— 
Planta humilior, viridis vel flavicans, pubescentia longiore. 
ores in paniculam densam dispositi. Sepala longius acuminata, 
