Critical Plants noticed on the Excursion. 411 
adaptation to seed-dispersal—may be observed during October and 
in early November. 
Suaeda maritima var. macrocarpa Moquin Chenop. Monogr. 
Eninn. 128 (1840); Chenopodium macrocarpum Desvaux fourn. i, 48 
(1813) ; Succda macrocarpa Moquin in Ann. Sci. Nat. ser. i, xxiii, 
309 (1831); Chenopodina maritima var. macrocarpa Moquin in DC. 
Prodr. xiii, 161 (1849).—This is the prevailing form of the species 
at Blakeney ; and it was also observed at Hayling Island. It occurs 
abundantly on the Bouche d’Erquy, and in other salt-marshes in 
northern Brittany. It flowers earlier than the small-fruited form, 
and has thicker, shorter, and blunter leaves. It is probably commoner 
in the British Isles than the small-fruited form which also occurred 
at Hayling Island. 
Ulmus campestris L. Several foreign members of the party 
promised to look out for the English elm on their return to their 
respective countries ; but none has reported it. It is said to occur 
in Spain in certain of the royal parks. 
I have elsewhere (in Gard. Chron., March 30th, April 6th and 
April 13th (1912) ), given my reasons for restricting the name 
U. campestris to the English elm. A later name is U. procera 
Salisbury Prodr. 391 (1796). The small ( c. 1-25 cm. long) subor- 
bicular fruits of the tree are very characteristic, as well as the long, 
straight, stout trunk, the widely spreading lower branches (often 
lopped), and the leaves which are always rough above as in U. 
glabra Hudson ( =U. montana ) and suborbicular on the lower parts 
of each young branch. 
Salix repens var. argentea Duby Bot. Gall, i, 424 (1828); 5. 
argentea Smith FI. Brit. 1059 (1804); Eng. Bot. t. 1364; Eng. FI. 
iv, 207 (1828). This form of 5. repens is often a social plant on 
sand-dunes, as near Southport. MM. Camus (Classif. Saul. 168 
(1904)) elevate the plant to a sub-species and Mons. Rouy (FI. 
France xii, 209 (1910)) to a “race,” but Rouy only confuses matters 
by changing its name to dunensis, and by retaining a var. 
argentea which is not Smith’s plant. The charge of inconsistency 
suggested by MM. Camus and by Mons. Rouy against Sir J. E. 
Smith, to the effect that the latter confused his S. argentea in 
any way, cannot be sustained. In my opinion the var. lanata, 
A. et G. Camus (=var. argentea Rouy) is a silvery-leaved form of 
var. fusca, which forms the passage from var . fusca to var. argentea. 
Apart from its strongly social habit, I cannot see why var. argentea 
should be elevated to a higher rank than var. fusca. MM. Camus 
