432 MR. F. N. WILLIAMS: REVISION 
167. A. QUADRIDENTATA, Williams. 
Syn. Lepyrodiclis quadridentata, Maxim. Fl. Tangutica, p. 84, t. 31 
(1889). 
4-6 centim., intricata, ezespitem sat densum formans. Caulis 
tener decumbens a basi divaricato-ramosissimus viscido-pubescens. 
Folia dense pilosa breviter petiolata, lanceolato-linearia vel 
lanceolata, acuminata vel acuta. Sepala oblonga obtusa. Petala 
obovata quadridentata, den'ibus ovatis vel lanceolatis, sepalis 
longiora. Ovula 4-5. Semina obtuse tuberculata. 
Hab. China: E. Kansu and N. Szechuen. 
Iconogr.— Mazim. l. c. 
Subgenus VII. MACROGYNE. 
168. A. LONGISTYLA, Franch. in Bull. Soc. Bot. France, xxxn. 
p. 493 (1886) ; PL. Delavay. p. 96, t. 24 B. 
Radix gracilis, multiceps. Caules tenues diffusi bifarie pubes- 
centes. — Folia oblongo-linearia, apice mucronulata, basi dilatata 
laxe connata, parce ciliolata. Pedicelli axillares elongati glandu- 
loso-pubescentes. Calyx basi truncatus; sepala inferne glandu- 
lifera, lanceolata, abrupte mucronata, margiue late albido-mem- 
branacea, post anthesin ad basin leviter gibbosa, mox complicata. 
Petala alba calycem vix superantia, e basi euneatá distincte 
unguiculata obovato-oblonga. Anthere lutex subglobose. Styli 
sub lati, calycem longe superantes. Ovula 4-5. 
This species is very near Thylacospermum, and is a connecting 
link between it and Arenaria. The subgenus Macrogyné differs 
from Thylacospermum only in the calyx, which is not tubular, the 
receptacle being only slightly concave, and in the length of the 
styles. . 
Hab. China : prov. of Yun-nan, on Mt. Li-kiang, at an altitude 
of 4000 metres (1886). 
leonogr.— Franch. l. c. 
