GYMNOCOLEA ACUTILOBA IN BRITAIN 125 



ovoideus, basi rotundatus, perianthii lobis coronatus. — Type in 

 Herb. Jam. 



Leaves attached just above base of ochreae, 5-7 cm. 1., 3-4*5 cm. 

 br., glabrous ; petioles 5-6 mm. 1. Ochrece about 8 mm. 1. Bacemes 

 8-14 mm. 1. ; pedicels scarcely 1 mm. 1. Flowers not seen. Fruit 

 8 mm. 1. (incl. lobes), about 5 mm. br. ; lobes 1-1*5 mm. 1. 



Hab.— In fi\, Feb. ; Green Valley, Harris ! 5094. 



This species is near C. diversifolia Jacq., but differs in the 

 nerves, veins, rhachis, and fruit. 



Coccoloba polystachya Wedd. var. jamaicensis. Kamuli, 

 folia et ochreae glabri, folia apice rotundata. Type in Herb. Kew. 



Hab. — In fl., Jan. ; interior of Westmoreland, Purdie I 



The typical species occurs in tropical S. America, and is not 

 known from the West Indies. 



Pilea lamiifolia Fawc. & Eendle var. puberula. Caulis et 

 folia subtus ferrugineo-puberuli. Cystolithi valde inasquales, 

 majores fusiformes minores punctiformes. Perianthii segmenti 

 intermedii lobus lateralis latior. 



Hab. — On rocks and logs in woodland ; John Crow Mt., 

 1500 ft., Harris dt Britton, 10,777. 



GYMNOCOLEA ACUTILOBA IN BEITAIN. 



By D. A. Jones, F.L.S. 



On boulders and among scree on the north-western face 

 of Khinog Fawr, Merionethshire, and just below the summit at 

 an altitude of about 2000 ft., there grows a hepatic which has 

 puzzled British botanists for some time. It forms beautiful dark- 

 green patches on the boulders, or grows in graceful strands among 

 the fine tufts of Bhacomitria that adorn the vertical faces of those 

 boulders. It was first found by Messrs. Cleminshaw, Owen, and 

 the writer, in June 1910. We named it Gymnocolea inflata var. 

 heterostipa (Carr. & Spruce) Lindb., a plant found many years 

 ago on the Glyders by Mr. E. M. Holmes. The clue to the 

 identification of this critical species was, however, supplied by 

 Prof. Schiffner, of Vienna, to whom specimens were sent. He 

 suspected it to be G. acutiloba, although the specimens were too 

 immature to enable him to arrive at a final decision. In the 

 meantime specimens were submitted to Dr. Kaalaas, of Chris- 

 tiania, who first described the plant. He was quite convinced, 

 after comparing it with original specimens of G. acutiloba, that it 

 belonged to that species. Perhaps it ought to be mentioned that 

 Prof. Schiffner, after the examination of more mature plants, 

 declared in favour of G. inflata var. heterostipa. Messrs. Mac- 

 vicar and Pearson, who know the latter variety well, are inclined 

 to accept Kaalaas' view on the matter. As Kaalaas remarks, the 

 two species are, no doubt, very nearly allied to each other, and are 

 probably connected by intermediate forms. The numerous inter- 

 calary postical branches, which are considered the most striking 



