A NEW GENUS OF RUBIACE^ 317 



Triglochin iKtlustre L. (C) Wingerworth. 



Eriophorum pohjstachion L. var. elatius (Koch). (G) Dore 

 Moor. — Carex vesicaria L. (*Y) Haddon ; (L) Lathkil. 



Phalaris canariensis L. (C) Staveley, Heath ; (G) Little- 

 moor; (L) Alport. This plant is merely a grain-alien, and 

 occurs only in waste places near dwellings. — Agrostis alba L. var. 

 stolonifera (L.). ■ (C) Brockwell. — A. tenuis Sibth. "var. pumila 

 L." (L) Masson. This plant grows freely on the exposed lime- 

 stone turf. — A. nigra With. (C) Calow, Dunston, Tapton, Has- 

 land. It occurs abundantly in cereal crops. — Avena fatua L. var. 

 pilosa Syme. (C) Chesterfield. This is the plant we recorded as 

 var. inlosissima Gray in Journ. Bot., June, 1908, p. 207. Prof. 

 Hackel has identified it as var. pilosa (See B. E. C. Eep. 1909, 

 p. 481). It is certainly the common form in Derbyshire and, we 

 believe, in England generally. — Festuca ovina L. var. glauca 

 Hackel. (L) Lathkil Dale. — Bromus giganteus L. (C) Wing- 

 field, Eenishaw. — B. secalimis L. (■■=?) Cresswell. — Brachy- 

 podium pinnatum L. (C) Hardwick. The distribution of this 

 grass in Derbyshire is interesting. As the Eev. W. E. Linton 

 noted, it occurs very abundantly on the Permean ; indeed, it forms 

 a striking feature of the flora. Only occasionally does it pass on 

 to the Coal Measures, and then for a very short distance, as at 

 Hardwick, where the top of the hill is Permean, and the bottom 

 Coal Measures. On the Carboniferous Limestone it is almost 

 absent, but on Crich Stand, an inlier of this formation, there is a 

 large patch of this grass. The floras of the Magnesian and Car- 

 boniferous Limestones have so much in common that this great 

 difference in the presence and absence, respectively, of B. pin- 

 natum is most striking. — B. pinnatum L. var. ipuhescens Gray. 

 ("P) Elmton, Hardwick. — Lolium perenne L. var. \aristatum 

 Schum. (-''G) Littlemoor. 



A NEW GENUS OF BUBIACE^. 

 By H. F. Wernham, B.Sc. 



In the course of examining unnamed material of Buhiacece in 

 the National Herbarium, I came across the following interesting 

 plant collected by Appun, which I regard as the type of a new 

 genus : — ■ 



Pteridocalyx, gen. nov. Calycis tubus oblongus vel anguste 

 infundibularis ; limbi lobi 5 persistentes, quorum saepissime unus 

 (nonnunquam plures) in laminam foliaceam petiolatam coloratam 

 productus, caeteri inter se suba^quales angusti, rarissime omnes 

 aequales. Corolla tubo elongato extus sericeo lobis latiusculis 

 glabrescentibus vel sparse pilosis, stricte contortis. Stamina 5 

 basi coroUae inserta filamentis brevil)us antheris linearibus dorso 

 affixis. Discus annularis tumidus. Ovarium biloculare. Stylus 

 glaber filiformis ramis 2 subcomplanatis. Ovula in loculis 

 numerosa, placentis septo adnatis eique aequilongis. Capsula 



