Makinoa, a New Genus of Hepaticae. 



By 

 K. Miyake. 



With PI III. 



In April of this year Mr. Makino of our Botanical Institute handed 

 me a liverwort, which was collected by him in Mt. Kiyosumi in the pro- 

 vince of Awa, about 50 miles south-east of Tokyo. The plant belongs to 

 a thallose JungermanniaceaB, having the thallus just like that of Pellia, so 

 that it can be easily mistaken for the latter when one has only the sterile 

 specimen. Happily my specimens had well developed sporogonia and 

 sexual organs. The oblong elliptical shape of the capsule and the position 

 of the antheridia, which are grouped in a depression near the apex of the 

 thallus, show at once that the present species should be grouped under a 

 genus other than Pellia. 



By somewhat careful study of this plant I found that it could not 

 be satisfactorily referred to any described genus. Even Schiffner's Hepa- 

 ticae,^ which is said to contain almost all the described genera, except 

 the very recently established ones, failed to throw any light ujmdii the 

 systematic position of the plant. So it seemed necessary that a new 

 genus should be established to contain it. For this the name Makinoa, 

 in honor of Mr. Makino, the collector of this plant, is proposed ; and as 

 the plant is alike Pellia in its external appearance, the species was named 

 Makinoa pellioidcs. 



Then I sent the specimens, with figures and descriptions, to Mi*. 

 Stephani of Leipzig, to ask his opinion. He acknowledged the establish- 

 ment of a new genus upon this plant, and sent words that the plant was 

 sent him before from Japan, but without fructification, and he described it 

 under the name Pellia crispata; 2 and so that the plant should be named 

 Makinoa crispata, (St.) Miyake. 



1) Hepaticpe, in Engler und Prantl, Die naturlichen Pflanzenfamilien, I Teil, 3 Abteil. 

 91, 92 Lief. 



2) Stephani, Hepaticae Japonica?, Bulletin de l'Herbier Boissier, vol V, 1897, p. 103. 



