MR. F. F. WTLLTAlklS ON THE GENUS D IAN THUS. 419 



laneeolnta acuta, supremis squamiformibus. Flores breviter 

 pedunculati odorati transverse 18 mm. Bracteae 2 (rarius 4) 

 ovatae acutae patentes coriaceae membranaceo-marginatae. Calyx 

 gracilis inlerdum purpureo-fuscus, dentibus lanceolatis acumi- 

 natis scarioso-alatis 7-nerviis saepe fuscis. Petala non contigua, 

 lamina obovata pallide carnea rosea purpurascens v. rarius alba 

 maculata, = % unguis. Antherae obloogae purpurea). Capsula 

 eylindrica. Semma laevia reticulata. 



a. typicus (vide auct. Pinks West. Eur. p. 23). 



Vix glaucescens. Bracteae 2. Lamiua rosea v. purpurasceus. 



Subvar. alpestris, Rawing* (sp.) ex Schur (non var. alpestris, 

 En dr. et Hochst.). 



b. microlepis, Pet. (\ide and. Pinks Cent. Eur. p. 39). 

 Hob. Saxony. 



c. serpyllifblius, Rorb. in Oesterr. Rot. Zeitschr. 1888, p. 51 ; 

 auct. Pinks Cent. Eur. p. 39. 



Magis caespitosus. Caules magis foliosi. Folia caulina 

 obtusiuscula. 



d. glaucus, Linn, (sp.) Sp. Plant, ed. I. p. 411 ; Sm. in Trans. 

 Linn. Soc. ii. (1794), pp. 295, 300 ; Reiclib. Icon. Fl. Germ. Helv. 

 f. 5041. 



Valde glaucus. Polia subinde glabra. Bracteae 4. Lamina 

 alba semper cum linea transversa purpurea ad basin. 



A, 



Ilort. Hafi 



p. 137 ; Ledeb. Fl. llossica, i. p. 281 (floribus purpurascentibus). 



e. foliosus, Roenn. (non Turcz.) in Reiclib. Icon. Fl. Germ. 

 Helv. f. 5040. 



Respecting the variation of tbis species Eeichenbach says (Fl. 

 Germ. Excurs. p. 809) : — " Gracilis, scaber, petala angusta 

 saturate kermesina, basi albo-punctata. In montanis magis 

 foliosus, glaucescens, floribus majoribus saturatioribus." 



Geogr. limits. — JV. Trondhjem fiord, in Norway, G4°. 



S. Bengal, 23°. 



E. Japan, 142°. 



W. Scotland (Inverness), 5°. 



129. D. ALPENus, Linn. Sp. Plantarum, ed. I. p. 412 ; Ledeb. 

 Fl. Rossica, i. p. 281 ; Sim*, Rot. Mag. t. 1205. 



Plus minus caespitosus, glaber. Caules 9 centim., simplices 



