Caryophyllaceæ. 303 



and anthers were reduced (Fig. F^ G). The styles have per- 

 haps somewhat larger stigmatic papillæ than in ^ (compare 

 /1 and D). 



According to Lindman, in Norway and Sweden, Stellaria Friesiana 

 Ser. var. alpestris Fr. greatly resembles S. boréale on account of its 

 long styles, papillose a long way down; but it is either protandrous 

 or protogynous. Self-pollination takes place easily. 



Sagina. Linnsei Presl. 

 My own investigations are too incomplete to be recorded. Lud- 

 wig records gynodimorphism ("undeutlich"). A. Schulz records that 

 there are two forms which difier as regards the size of the flowers, 

 a: decandra Fenzl {macrocarpa Rchb.), petals = or slightly > than 

 sepals. Most frequently 10 stamens. Homogamy and self-pollination. 

 $ occur singly. — b : micantha Fenzl. which is, for instance in Riesen- 

 gebirge, much commoner than decandra; the petals not even half as 

 long as the sepals. Some, but rarely all, of the cor.-st. are always un- 

 developed. $ occur singly. Pollination often takes place in the closed 

 flower. The flower is closed during dull, rainy weather, and even then 

 self-pollination takes place with good result; consequently, this form 

 approaches cleistogamy. See also A. Schulz in "Sitzungsber. naturf. 

 Freunde", 1888, no. 4, p. 184, where he states that in 1886 he was 

 staying several weeks in Hampelbande, but never saw an expanded 

 flower, although several patches of ground were thickly covered with 

 the plant; and the same was the case in 1887 "im westlichen Theile 

 des Gebirges." Forma decandra, on the other hand, had always open 

 flowers. — In Greenland it sets entirely ripe fruit. 



11. Sagina procumbens L. (Fig. 32), 

 The flowers do not open in dull or in cold weather. 

 Denmark; Greenland. 1 have figured some Greenland 

 specimens in Fig. 32, A — E, for comparison with our Euro- 

 pean specimens. 



?: Petals, small, 1^/4 mm in length, smaller than the 

 sepals (Fig, 32, A) which are 2^/^ mm in length. The cal.-st. 

 secrete honey as usual. Both the cal.-anth, and the cor,- 

 anth, may be found in contact with the short, slightly out- 

 spreading styles which have very long, stigmatic papillæ 

 which extend to their base (Fig, E, F). The Greenland spe- 

 cimens were found full of germinating pollen, and there can 



20* 



