74 THE JOURNAL OF BOTANY 



hinc iiide iterum ramosis oppositis. Folia infima obtusa, 

 utrinque dentibus 1-3 obtusis, media et superiora ovata opposita 

 acuta, basin versus latissima, utrinque dentibus acutis, sed non 

 aristatis 4-7. Bracteae suboppositse latitudine folia caulina super- 

 antes sed breviores, seepe fere orbiculares, utrinque dentibus 4-7 

 acutis non aristatis vel in aristam brevem abeuntibus, patentes 

 vel arcuato-recurvae. Folia omnia griseo-viridia, in speciminibus 

 siccatis infra rugosa, apicem caulis versus saepe smaragdino- 

 nigricantia, in pagina superiore et inferiore setulis albis dense 

 hirsuta vel pubescentia reducta saltem in regione marginali 

 paginae superioris, in margine et in nervis paginae inferioris 

 setulis parvis obsita. Spica initio condensata, mox, sed raro 

 valde, elongata ; flores subsessiles. Calyx totus vel saltem in 

 margine et nervis albo-setulosus, fructifer subinflatus, dentibus 

 brevibus. Corolla ca. 4-5 mm. longa, labio superiore bilobo, lobis 

 emarginatis vel denticulatis, labio inferiore trilobo, lobis emargi- 

 natis, albida striis cceruleis et macula lutea in labio inferiore 

 notata, rarius tota coerulea vel amethystina. Capsula cuneato- 

 obovata, matura calycem aequans vel parum superans, truncata 

 vel subemarginata, margine longe ciliata, ceterum pilosa rarius 

 glabra " (p. 128). 



The principal differences between the two species are these : 

 Nemorosa is usually a taller plant with more upright branches, 

 those of curta often spreading considerably ; the bracts of nemorosa 

 are less rounded ; the leaves and bracts of nemorosa are green 

 and quite glabrous, and plicate beneath, those of C2irta grey-green 

 owing to the dense hairy covering, and somewhat rugose beneath, 

 especially in the dried condition ; the teeth of the bracts are 

 more acute in nemorosa ; the inflorescence of nemorosa lengthens 

 considerably after flowering, this feature being much less marked 

 or even absent in curta ; the calyx of nemorosa is glabrous, that 

 of curta densely hairy all over, or on margins and ribs alone; 

 the capsule of nemorosa is said to be emarginate, that of ctcrta 

 subemarginate or truncate, but I have failed to convince myself 

 that there is any constant difference in this respect, the capsules 

 of both plants being subject to variation. 



From several localities plants have been obtained agreeing in 

 all respects with ciirta, except that leaves, bracts, and calyces 

 are only slightly hairy. They seem without doubt to be ciirta 

 var. glahrescens Wettstein {Monog., p. 133). 



Far more abundantly, however, I have found plants agreeing 

 in all respects with nemorosa, except that the leaves and bracts 

 are slightly hairy, generally on the margins only, and that the 

 calyx also may bear some marginal and occasionally surface hairs. 

 These seem without doubt to be merely forms of nemorosa. 



Wettstein points out that the distributional areas of nemorosa 

 and curta are different, the area of nemorosa being more southerly 

 than that of curta. He says that where these areas are in contact 

 nemorosa sometimes shows the first traces of trichomes on the 

 leaf margin. These areas are in contact through England, as 

 shown in the map of distribution {Mo7i., Karte I). It is therefore 



