SHORT NOTES 361 



preparing, recently sent me a specimen o£ a Harpidioid Hypnum 

 from Dartmoor, which seems to deserve a varietal name. As 

 Mr. Travis's paper is hardly of the nature to be a suitable medium 

 for the publication of a new form, he has asked me to send a descrip- 

 tion of it to this Journal. Mr. Travis had previously submitted it 

 to Mr. J. A. Wheldon, who gave it as his opinion that it was probably 

 worthy of a varietal name. It may be diagnosed thus : — Tenellum ; 

 magnitudine var. gracilescenti simile, sed laxius, mollius, parcissime 

 ramosum, foliis multo longioribus, cellulis alaribus tenuibus, plerumque 

 hyalinis ; paraphyllis paucis. Hah. Headland Warren, Dartmoor, in 

 a small stream, coll. Gr. T. Harris. — H. N. Dixon. 



NiTELLA OPACA Agardh IN Heeefobbshiee. I found this plant, 

 both S and 5 > growing in Warlow Pool, Eaton Bishop, last July, 

 by floating out a handful of the dense mass of Duckweeds and Eiccia 

 fluitans covering the surface, when its delicate green threads came to 

 light. Mr. James Groves has kindly named it for me. Besides 

 being the first record of this species in the county, it is at present 

 the only example of the genus known to exist in Herefordshire, as 

 N.flexilis, once found by the Kev. A. Ley over forty years ago, soon 

 disappeared. — Eleonoea Aemitage. 



Pteus toeminalis Ehrh. In Hertfordshire, while "not in- 

 frequent in the south of the county " (Coleman, jP^r«),and recorded 

 in a number of stations in the Colne and Lea basins, it becomes rare 

 in N. Hei-ts. Until 1918, 1 had never seen a tree in the Ivel District, 

 but in September I came across one bush in a hedgerow near Little 

 Hile End, E. of Hitch Wood, upon boulder clay. It is not recorded 

 for Bedfordshire. — J. E. Little. 



SoLANUM AUEicuLATUM L. IN St. Helena. Mr. H. D. Bartlett 

 writes from St. Helena : — •" I am sorry to say a good deal of the 

 higher land has been cleared lately to plant Fhormiiim tenax which 

 I fear will have killed some of the few remaining native plants. 

 Some of the introduced plants also are spreading, especially Ageratum 

 conyzoides and Solcumm auriculatum ; the last-named especially is 

 likely to kill some of the natives, as it is going up to the higher parts 

 of the island where A. conyzoides does not. Melhns, in 1875, says, 

 'recently introduced from the Royal Gardens at Kew.' I wish they 

 had kept it there ! Now I think anyone would take it for a native. 

 Sir D. Morris named my specimen for me." 



Arabis SCA15RA: A CORRECTION (p. 296). — The plant in the 

 Andrews Herbarium is Sisymbrium Thalianum J. Gay. A specimen 

 gathered on the same date is labelled in Dale's Herbarium "Turritis 

 minor ramosissima et elatior. An Turritis minor foliosa Pet. Herb. 

 Brit, which Dr. Plukenet found at Axbridge in Somersetshire, not 

 far from this." Plukenet's plant \\as placed as a var. /3. by Hudson 

 and Smith; but the latter correctly remarks that none of the 

 varieties are at all constant. — G. S. Boulger. 



