222 Observation of the Origin of Variety. 
(20), various kinds of pelorias according as one or 
another form of the petals of the parent species has be- 
come the one which prevails in the subspecies. In spur- 
bearing species they are distinguished as Peloria nee- 
tana and anectaria. Both possess a very low degree of 
fertility but are, so far as is known, heritable. Peloric 
flowers without spurs are well known in Linaria, 1 An- 
tirrhinum, 2 Viola? Tropaeolum, 4 etc/' 
There are few heritable peloric races beyond those 
which have been named. The best known are Cor yd alls 
solida peloria which in GODRON'S experiments 6 was found 
to transmit the abnormality through a series of genera- 
tions, and Digitalis pnrpurca monstrosa (Fig. 42). This 
latter, the peloric foxglove, has been a favorite garden 
plant for a long time, and has often been the subject of 
morphological investigations. The oldest descriptions 
and figures are due to my predecessor G. VROLIK, whose 
preparations are still to be seen in the collection at Amster- 
dam. 7 Since his time the variety has been cultivated in 
our botanical garden more or less regularly, and is still 
growing there. 8 It is very constant; its peloric flowers 
*C. BILLOT, Annotations a la Flore de France et d'AUcmagnc, 
quoted in Bot. Zeitung, 1872, p. 278. 
2 J. T. C. RATZEBURG, Animadversiones ad peloriarum indolcm, 
1825, Plate I, Figs. 64-76. 
3 J. C. COSTERUS, P clones du Viola tricolor, Archiv. Neerl., Vol. 
XXIV, p. 142, Table II ; DE CANDOLLE, Organo graphic, PI. 45. 
4 E. VON FREYHOLD, Ueber Pelorienbildung bei Tropaeohim adun- 
cum, Botan. Zeitung, 1872, p. 725 and Plate IX. 
5 D. A. GODRON, Mem. Acad. Stanislas, 1865 and 1868 (Delphi- 
nium chinense, etc). 
8 GODRON, loc. cit., 1868, pp. 3-8, Cultures from 1862-68, with more 
than fifty peloric plants. 
7 G. VROLIK, Ueber cine sonderbare Wucherung der Bhnnen bci 
Digitalis purpurea, Flora, 1844,?. i, Plates I and II; also Fortge- 
setzte Beobachtungcn iiber die Prolification von Digitalis purpurea, 
Flore, 1846, p. 97, Plates I and II. 
8 The following selection of references may be of use : W. F. R. 
