12 Rhodora [JANUARY 
J. Gay, Ann. Sci. Nat. sér. 3, iv. 27 (1845) with the two American 
species, G. Douglasii and G. tenella based on Alsine Douglasii Fenzl 
and Arenaria tenella Nutt.; but, disregarding the name Greniera, 
which had never been published for a genus prior to Gay’s use of it, 
Heller enriches the synonymy with the names Alsinopsis Douglasii 
(Fenzl) Heller, Muhlenbergia, viii. 20 (1912) and Alsinopsis tenella 
(Nutt.) Heller, l. c. 96 (1912). There are still other names which 
might be discussed, Xeralsine Fourr., ete.; but it is sufficiently clear 
that even if we keep Alsine Wahl. distinct from Arenaria, there are 
plenty of well published names for it which antedate by many decades 
Alsinopsis Small; and, furthermore, the three species which were 
formally described by Wahlenberg under his Alsine, the basis of 
Alsinopsis, are members of the following so-called genera: 
ALSINE STRICTA (Swartz) Wahlenb. belongs to ALSINELLA Swartz 
(1814), a name antedated by Alsinella Moench (1794); to SABULINA 
Reichenb. (1832), a name which had not been previously used for a 
genus; and to ALSINANTHE Reichenb. (1841), again a perfectly 
valid generic name. 
ALSINE BIFLORA (L.) Wahlenb. belongs likewise to ALSINELLA 
Swartz (1814); to SaBuLINA Reichenbach (1832); and to ALSINANTHE 
Reichenb. (1841). 
ALSINE RUBELLA Wahlenb. belongs likewise to ALSINELLA (1814) 
and to SABULINA (1832); while A. verna, to which A. rubella is so 
closely related as often to be considered conspecific, was one of the 
original species of TRyPHANE Reichenb. (1841), again a name which 
had not been previously used. 
There is, then, no possible need for the generic name Alsinopsis 
. Small. 
IV. THE AMERICAN REPRESENTATIVES OF ARENARIA 
SAJANENSIS. 
The plants which were included by Robinson in the Synoptical 
Flora under Arenaria sajanensis Willd. prove, when better understood, 
to be four quite definite species, which may be distinguished by the 
following characters: 
The few short filiform herbaceous or subherbaceous basal shoots bearing 
obscurely keeled leaves: petals 0.5-1 mm. wide, shorter than to barely 
exceeding the glabrous or puberulent sepals: anthers 0.2-0.3 mm. long: 
capsule 4-6 mm. long, with membranaceous pale valves: seeds smooth, 
reniform-orbicular, not obviously beaked, 0.6-0.8 mm. in diameter. 
A. sajanensis. 
