120 ANNALS OF SCOTTISH NATURAL HISTORY 



A. Calyx 4-partite ; two broadly ovate segments enclosing two 



much smaller segments. 



Gentiana baltica, Murb. Annual ; basal leaves few, ovate or lanceo- 

 late, each broadest below middle ; corolla-tube usually shorter 

 than calyx, rarely longer. Fl. mid-August to October. Not 

 known from Scotland ; occurs in West Cornwall, South Devon, 

 Carnarvon, and (?) Norfolk. 



G. campestris, L. Biennial; basal leaves in a rosette, spathulate, 

 broadest above the middle; corolla-tube usually longer than 

 calyx, rarely shorter. 



Sub-sp. suedca, Murb. Internodes usually much longer than their 

 leaves ; middle and upper stem-leaves strap-shaped or oblong, 

 rounded or obtuse at apex; middle leaves erect or erect- 

 patent. Fl. mid-June to end of July, in high northern or 

 alpine regions. A Shetland gathering by Mr. Beeby approaches 

 this in its very long internodes. 



Sub-sp. gcrmanica, Murb. (non Willd.) Internodes slightly shorter 

 or slightly longer than their leaves ; middle and upper stem- 

 leaves lanceolate or ovate-lanceolate, more or less acute, spread- 

 ing, especially the upper leaves. Fl. end of July to September. 

 The common British plant. 



B. Calyx 5- (or 4-) partite ; segments all lanceolate or linear- 



lanceolate, subsimilar, not overlapping. 



G. itliginosa, Willd. Annual ; basal leaves few, ovate or lanceolate, 

 broadest below middle ; corolla-tube equalling or slightly 

 exceeding the calyx. Fl. mid-August to October. Recorded 

 by Nyman for Scotland. 



G. amarella, L. Biennial; basal leaves in a rosette, strap-shaped 

 or spathulate, broadest above middle; corolla-tube usually 

 longer than calyx, rarely shorter. 



Sub-sp. lingiilata, C. A. Agardh. Middle internodes mostly much 

 longer than their leaves ; middle and upper stem-leaves strap- 

 shaped or oblong, rounded or obtuse at the apex; middle 

 leaves erect or erect-patent. Fl. mid -June to end of July, 

 or, in extreme north, to August. Represented by the form 

 pracox from the south of England. This form differs from 

 Murbeck's in flowering earlier (May-June), and in being 

 dwarfer, with fewer internodes, scarcely longer than their 

 leaves. 



Sub-sp. axillaris, Murb. Middle and lower internodes rather shorter 

 than their leaves, or slightly longer; middle and upper stem-leaves 

 ovate-lanceolate or lanceolate, more or less acute, usually spread- 



