78 CHARACTERS OF BRITISH PLANTS. 
P. vulgaris and P. veris, and it usually (if not always) is found 
in company with both the supposed parents, in damp ground. 
Thirdly, there is a large-flowered cowslip (P. veris) in which 
the limb is broader and less concave than usual; and this 
also may be a hybrid. Fourthly, there is the true Primula 
elatior (as it appears to be) discovered at Bardfield in Essex, 
by Mr. Doubleday. In this latter, the calyx is sometimes 
only half the length of the tube of the corolla, and has short 
triangular teeth. . 
Chenopodium glaucum (Linn.)—In my Surrey specimens, 
the small heads or clusters of flowers are disposed into in- 
terrupted leafy (not leafless) spikes. The figure in English 
Botany, though with less leafy spikes, represents an early 
stage. The Darlington plant has ovate obtuse leaves, and 
the flowers in short almost leafless spikes. 
Atriplex patula (Linn.)—Various species have been formed 
out of this, in accordance with variations in the cutting of 
the leaves and perianth of the fruit; but assuredly these vary 
much on the same single individual. I have seen the perianth 
entire at the margin and on the back; toothed with few or 
several teeth at the margin, and muricate with few or several 
teeth on the back: all on the same plant. 
Polygonum maritimum (Linn.) and P. Roberti (Lois. ?)— 
The latter of these, having been long joined or confounded 
with P. aviculare, it will probably excite surprise that I 
should here propose to reduce the plant toa variety of P. 
maritimum. One of my specimens of P. Roberti, from Gal- 
loway, has the nerves of the ochree branched, and in general 
appearance is about half-way between the Christchurch plant, - 
ealled P. maritimum, and the Penzance one admitted to be P: 
Roberti of the British Flora. Moreover, living specimens in 
my garden, raised from seeds of the true P. maritinum 
(Azores), are half-way between the parent plants and the 
Cornish P. Roberti, having the long internodes and strag- 
gling habit of the latter, with the broader leaves and more 
nerved ochre of the former. Lastly, the varieties of P. 
