1914] 
GATES—SOME CENOTHERAS FROM CHESHIRE AND LANCASHIRE 387 
entirely from one individual from a sowing of Birkenhead seeds 
at Woods Hole in 1908. From this individual an F; of 376 
plants was grown in the two following years. About 4 per cent 
of these plants showed virescence, as described in the above 
paper. In 1910 a total of 297 plants were grown, most of which 
belonged to the Ез. An Е; numbering 193 plants in nine fam- 
ilies was grown in 1911, and an F, of 356 plants in eight fam- 
ilies in 1912. Тһе plants were by no means uniform, and they 
varied considerably from year to year. Тһе description given 
is therefore a generalized one, and the condition of variability 
is no doubt similar to that of many wild "species." Ву isol- 
ating the offspring of а larger number of individuals, no doubt 
this variation could have been further analyzed, but more 
pressing problems have prevented this being done. 
Plate 20 fig. 1 shows a typical rosette of my 1909 culture, 
pl. 20 fig. 3 the full-grown plant, and pl. 20 fig. 6 а flowering 
shoot on a larger scale. Specimens of this species are preserved 
in the herbarium of the Missouri Botanical Garden from my 
cultures of 1909, and in the British Museum (Natural History) 
from the 1912 families. 
Description: Rosette of few leaves, broad and obtuse-pointed, 
somewhat crinkled. Full-grown plant pyramidal in outline, 
with lateral branches and persisting rosette leaves. Average 
height about 88cm. Stems slender, stem-leaves smooth, lance- 
olate, bracts broadly cuneate at base with a very short petiole, 
tip long-pointed, more or less curled, margin irregularly repand- 
denticulate. Inflorescence compact, flowers numerous; buds 
squarish, slender with very long and slender sepal tips, sepals 
thin, bud cone 35 mm. long, hypanthium 37 mm., sepal tips 7 
mm., ovary 10 mm., petals 43 mm., very broad and overlapping 
when flower is open, long hairs fairly numerous. Few red 
papilla on main stem, many on side branches. In 1909 culture 
the buds were all green, but in 1911 they had the red color 
pattern of (E. mut. rubrinervis and the stems were also reddish. 
As regards variations, virescence appeared in the first two 
generations but not in the last two. On the other hand, a var. 
elliptica was first observed in F; and further studied in F; and 
F,. This variety differs essentially in being smaller and having 
narrower leaves and narrow, more or less elliptical petals. Plate 
