(3.) Where several plants occur in a line, from 2 ft. to 4 ft. apart, as sometimes happens, this line takes no constant direction.

(4.) The plants occur, roughly, in groups, but seldom close to one another and not often very near any other plants. Only in one small area were they found among tussocks (about a dozen altogether), and here the tussock formation is peculiarly scanty.

(5.) The whole number of plants I counted was seventy. Allowing for possible errors and oversights, and portions not quite so minutely examined, it is safe to say, I think, that the area does not contain more than from one hundred and fifty to two hundred individuals, and I should think it probable that there are not more than one hundred.

(6.) In one space which was most carefully examined, and in which the plants were as frequent as anywhere, the nearest neighbours of a particular plant of Ranunculus paucifolius were: Poa acicularifolia, Lepidium sisymbrioides, Wahlenbergia albomarginata, Myosotis decora, Carmichaelia Monroi var., and the introduced Arenaria serpyllifolia and Cerastium glomeratum. The plants in the vicinity were on an average about 6 in. from one another, and spaces about 12 in. square were frequently quite barren. This would be a typical “open formation.”

In another case, not at all exceptional, at the other end of the area examined, a plant of Ranunculus paucifolius was seen to have no other plant nearer to it than 3 ft.; at this distance was a small patch of Poa acicularifolia; a little farther away was one plant of Oreomyrrhis andicola var. rigida, and at about the same distance one of Lepidium sisymbrioides; and 10 ft. away was one plant of Notothlaspi rosulatum. The rest of the 10 ft. circle was perfectly bare.

To complete the account of the surface of the hollow it may be added that areas of 12 yards by 6 yards were measured which supported no living plant of any kind. These completely barren spots form a fairly large part of the small available space.