1371.] DAYALLIA (HUMATA) TYERMANII. 173 
inch and a half, while the average length of the pinnules on the second pair of 
pinnae is about half an inch ; they are oblong, deeply pinnatifid, the lobes oblique, 
bearing usually a single sorus, with an external tooth. The stipes, which is red¬ 
dish-brown towards the base, together with the rachides and both surfaces of the 
frond, is quite glabrous, rounded behind, and flat with a rim at each margin in front. 
Davallia (Humata) Tyermanii. 
The position of the short broad sori is marked by boss-like protuberances on the 
upper surface ; and they are covered by scale-like indusia, attached by the base 
only, which is the mark of the Humata group. 
Mr. Tyerman, the excellent curator of the Liverpool Botanic Garden, himself a 
pteridologist of long standing, and who has been the medium of introducing this 
Davallia to our gardens, well merits the compliment of having his name as¬ 
sociated with so elegant a plant, which he had received from correspondents in 
Western Tropical Africa. Though technically a species of Humata , it is in a 
wider sense a Davallia , and will no doubt become best known to cultivators as 
Davallia Trjermanii. —T. M. 
