NEW OR RARE SPECIES OF MYCETOZOA 93 



pouches. Capillitium a coil of smooth slender pale red threads, 1*5 

 to 3 /i diam., sparingly branched and with few free ends ; one side of 

 the thread is often bordered by a low ridge or wing. Spores in mass 

 dull Venetian red, pale red when magnified highly, 10 to 11 /x diam., 

 adhering in clusters of 8 to 14, more distinctly warted on the side 

 facing outward as they lie in the cluster; the minute warts are flat- 

 topped. Found on bark and lichen on the trunk of a living Per- 

 simmon tree, Diosjri/ros Kahi, near Tanabe on the island of Kii, 

 Japan, in August, 1917, by Mr. Kumagusu Minakata. The specimen 

 consisted of four clusters of sporangia, two of which were slightly 

 broken. It was sent under the name Liceopsis, a genus whose one 

 species, L. lobata Torrend, bears a slight superficial resemblance to 

 the form under consideration. This new species belongs without 

 doubt to the family Arcyri&ceae, and shows affinity with Perichasna. 

 It differs, however, from all species of that genus in the smooth 

 capillitium and the sethalioid habit. I have much pleasure in naming 

 the genus after its discoverer, who has rendered such distinguished 

 service to science by his work on Mycetozoa in Japan ; the specific 

 name IcmgijUa refers to the character of the capillitium. 



Explanation op Plate 558. . 



Fig. 1. Phj/sarum ovisporum ; two plasmodiocarps. 1 a. Capilli- 

 tium. 1 b. Spores. 



Fig. 2. Arcyria earner/; groups of sporangia, la. Thread from 

 the lower part of the capillitium. 2 b. Threads from the upper part 

 of the capillitium, showing the prominences truncate or notched when 

 seen in profile, together with two spores and a fragment of the sporan- 

 gium-wall. 



Fig. 3. MinaJcatella longifila ; cluster of sporangia. 3 a. A 

 group of confluent sporangia. 3 b. Capillitium and two spore clusters. 

 3 c. Fragment of sethalium-wall, to which are attached strands repre- 

 senting imperfect walls between the confluent sporangia. 3 d. Part 

 of capillitium, showing a branching thread bordered by a narrow wing, 

 and a cluster of spores. 



GERANIUM PURPUREUM T. F. Forster. 



By A. J. Wilmott, B.A., F.L.S. 



The existence in this country of a distinct species allied to, but 

 confused with, Geranium Mobertianum has been demonstrated by 

 C. Reid (as G. modestum in B. E. C. 1909, Rep. 429), and has been 

 enlarged upon recently by Mr. A. H. Evans (in B. E. C. 1919, Rep. 

 724: 1920). There can be no question, to anyone who has seen the 

 true G. purpureitm Vill., that it is quite a distinct species, the small 

 flowers with yellow anthers, the long-pilose pedicels and calyxes, and 

 the ridged fruits, all being most clearly recognisable. My main 

 criticisms of Mr. Evans's account are three. In the first place, I 

 considered both the height and the habit of the two species identical 

 when grown in my garden from seed supplied by Mr. Evans ; secondly, 



