170 THE DISINTEGRATION OF LYCHNIS. 
the capsule dehisces by twice as many teeth as ae are styles, 
and which include Si/ene Linn. (sensi limitato) and some species of 
rote vith. plurilocular capsules, for which Loishanbiaks proposed 
Eudianthe; and (2) those species in which the ciate 
teeth are isomerous with the styles, and which comprise the gen 
Viscaria of Rohling.+ If species which have five styles are oobi 
from Silene, it would be better perhaps to include Polyschemone nivalis 
Schott (Lychnis nivalis Kit.) in Hudianthe, though Rohrbach in his 
excellent and incomparable monograph has preferred to retain this 
species as well as Agrostemma mt rosa{ in Silene. As long ago as 
1825, Robert Sweet, in discussing the affinities of the plant now 
known as Heliosperma alpestre, pa that the genus Silene was 
very much overgrown, and threw out the suggestion that ‘‘ those 
(species) with an inflated calyx will probably form ongntenee natural 
— Though the disintegration of such genera as Silene has 
proceeded on the lines indicated by this Eatinipaisiys horti- 
calttiridt, and though superficial and obvious characters such as the 
structure of the riper envelope have not been considered of generic 
im gr 
species only emphasizes still more what Fries said, that it is a 
‘genus vastissimum undique ad reliqua radios emittens.”’ 
tabular conspectus of the ates here mentioned will best 
illustrate their differential diagnosi 
A. tae lame unilocular 
a. Pane alterdato with the teeth of the calyx. 
nore none. Styles 5. Capsule 5- 
. AGRosTEMMA, 
b. Ciple eppeaiie the teeth of the calyx, An- 
thophore conspicuous, often elon 
a. Capsule eae by teeth aauiat fi in number 
the sty’ 
* Petals sonyotieg’ in prefloration. Appen- 
ices fornicate at the base . Lyounis. 
nis: Petals convolute in prefloration Appen- 
ces efornicate at the bas Coronaria, 
seal Petals imbricate in preflraton ‘Seeds 
bearded at the hilum PrErRocoptis. 
B. Ape dehiscing by twice as many teeth as 
= Seeds crested on the dorsal surface. 
yle HEiosPeRMA, 
** Seeds bk crested on the dorsal surface. 
Styles 5, rarely ; . MELANDRYUM. 
B. Capsule ss ies at the 
a. Capsule dehiscing — teeth equal i in number 
styles . VISCARIA. 
peck i Fil, ed. 1 (1796), i ii. p. 37. 
} Linn. Sp. Plantarum (ed. 1) ), p. 436. 
§ Flora, 1843, i. p. 123, 
