Bo A. S. Horne. 
Glaucous Form. 
Corolla 
Petal 
Sepal 
Sepal 
Diameter. 
Lobe. 
Length. 
Width. 
1 
22 
4 to 2-5 
8 
2-7 
=sepals. 
2 
22 
3 
7-5 
2-5 
=sepals. 
Green Form. 
1 
18 
2-6 
8 
2-3 
=sepals. 
2 
20 
2-5 
7 
2-5 
=rsepals. 
It will be noted that both the calyx and corolla in these plants 
of S. Dilleniana are larger than those of the largest flowers of S. 
graminea described here. One individual of the former species is 
represented in the diagram by the letter D, for comparison with 5. 
graminea. 
Variation in the flower, in 5. graminea, is mentioned by Koch* 
in his Synopsis FI. Germ, et Helvet. in the following words:— 
[Stellaria graminea ] “ occurrit floribus minoribus et duplo majoribu s 
quae varietates, observante Schumelius, sexum polygamo-dioicum 
indicant: conf. FI. Sil. i, 417.” Two forms of Stellaria graminea 
recorded by Joh. Lange* in Haandbog i den Danske Flora, in 1851, 
appear’to agree very closely with the Wisley forms, referred to here 
as B and A respectively. These are grandijlora Petermann, stated 
to be of male sex, with corolla twice as long as the calyx, and 
stamens shorter than the petals; and parviflora (female) with 
corolla shorter than the calyx, short and sterile stamens, and style 
longer than the corolla. These forms are recorded in Giirke’s 3 
Plantae Europaeas but not in Flore de France by Roity et Foucaud 4 
where no reference is made to a male-sterile form. Babington 5 
appears to have been the first, in this country, to note variability 
in the sexual parts of the flower, but it has been suggested tome by 
Dr. Moss that he was probably indebted to Koch for his first know¬ 
ledge on the subject. A letter from Babington to Charles Darwin, 
dated June 6th, 1864, contains the following passage:—“The plants 
1 Koch. Svn. FI. Germ. et. Helvet. (1837), p. 119. 
3 J. Lange. Haandbog i den Danske Flora (1851), p. 273. 
8 M. GUrke. Plantae Europaeae, Tom. II (1897), p. 208. 
4 Rouy et Foucaud. Flore de France, III (1896), p. 234. 
6 C. C. Babington. Memorials, Journals and Botanical Correspondence 
1897). 
