208 JOURNAL OF THE ARNOLD ARBORETUM (vol. vi 



The origin of this tree is unknown to me and I have found no further cita- 

 tions in horticultural literature than those quoted above. According to 

 Henry the tree in Kew, of which there are specimens in this herbarium 

 collected in 1880 by Nicholson and in 1912 by Henry, was received from 

 Lee in 1879. 



Ribes sativum f. variegatum, comb. nov. 



Ribes vulgare f. variegatum (Weston) Rehder in Jour. Arnold Arb. I. 254 (1920) 

 where synonyms and references are given. 



As the name Ribes vulgare Lam. used by Janczewski for the species to 

 which most of our cultivated Currants belong is really only a synonym of 

 R. rubrum L., the name R. sativum Syme has to take the place of the name 

 R. vulgare Lam. The variety of Ribes rubrum with striped berries named 

 by Berlandier R. rubrum /S variegatum must not be confused with R. rubrum 

 variegatum West, and will have to be called R. sativum f. striatum, comb, 

 nov. {R. vulgare f. striatum (Kuntze) Rehder in Jour. Arnold Arb. I. 255 

 [1920]), where synonyms and references are given). 



Hamamelis japonica var. flavo-purpurascens, comb. n. 



Hamamelis incarnata Makino in Tokj r o Bot. Mag. xxvu. 71 (1913). 

 Hamamelis obtusata (Matsum.) Makino, 1. c. 150. 



Hamamelis japonica var. obtusata Matsumura ex Makino, 1. c, as synon. 

 Hamamelis obtusata f. flavo-purpurascens Makino in Jour. Jap. Bot. i. 8 (1916). 



Japan. 



This Japanese Witch Hazel seems to differ from H. japonica only in the 

 color of the petals which are more or less purplish or suffused with purple 

 and purple-veined chiefly toward the base. I do not think that the two 

 color forms distinguished by Makino can be clearly separated; he describes 

 the type as having flesh-colored petals deeper flesh-colored toward the 

 base and 2-2>£ mm. wide, and the petals of his f. flavo-purpurascens as 



mm. wide in the middle, yellow but purpurascent and deeper colored 

 veined toward the lower portion gradually." Judging from the plant 

 growing in this Arboretum and introduced by Mr. Wilson in 1919 from 

 Japan the color may vary in different years, for flowers collected in 1920 

 have the petals suffused with purplish their whole length while those col- 

 lected in 1923 are almost clear yellow in their upper part. Similar color- 

 variations occur in the American H. vernalis Sarg. and in H. virginiana of 

 which I described a form with purplish petals as f. rubescens in this Journal 

 (in. 210) two years ago. The leaves are not different from those of //. 

 japonica, those of our plant are mostly pointed at the apex, not obtuse to 



Mak 



H 



(To be continued,) 



