51. Stigma bifidum vei bipartitum; calcar corolla reliqua brevius 



vel aequilongum — — — -- — — — — -- -- 52. 



Stigma clavato-incrassatum integrum ; calcar corolla 

 longius: .- — — — — — — — — L delphinioides Gay 



52. Corolise labium superius profunde 2-partitum, lobis diver- 

 gentibus vel reflexis ... ___ -_ — — ... — L bipartita WHId. 



CorollsB labium superius ad medium usque 2-fidum, lobis 

 subparalellis ... — ... — ... — — — L spartea Hffé- et Lk. 



53. Semina margine radiato-ciliata ... ._. ... Linaria Pelisseriana Mill. 



Semina baud ciliato-marginata ... ... ... — ... -.. 54. 



54. Macranthae ... ... ... ... — — ..- — ... — — 55. 



Micranthœ : corollae 1 Va — 3 lineas longae... ... ... ... 87. 



55. Folia caulina omnia verticillata vel suprema opposita, lata 

 vel latiuscula, rarissime variatione linearia, sed tune flores 

 albidi vel flavi — — — — .- -- -- — 56. 



Folia superiora alternantia, rarissime (in L. alpina) vari- 

 antia verticillata, tuncque flores lilacini ... ... ... ... ... 62. 



56. Calycis segmenta lineari-setacea ... ... ... L propin^ua B. et R. 



Calycis segmenta latiora ._. .._ ... — ... ... ... 57. 



57. Pedicelli elongati calyce 2 — 3-plo longiores... ... ... ... 58. 



Pedicelli calyces aequantes vel breviores ... ... ... ... 59. 



58. Flores inferiores semper verticillatim dispositi ; calycis se- 

 gmenta subaequilonga, attenuato-acuminata ; braeteae lanceo- 

 latae; corollse maximœ violaceae v. lilacinœ ... L triornithophora Willd. 



Flores haud verticillati ; calycis segmenta valde inaequalia, 

 acuta ; braeteae ovato-ellipticae ; corollœ (magnitudine L. vul- 

 garis) luteae _._ ... — .._ ... ... ... ... L platycalyx Boiss, 



59. Folia brevia obovata vel elliptica ; calycis segmenta obtusa : 



L thym i fol la Vahl, 

 Folia angustiora ; calycis segmenta acuta vel acutiuscula 60. 



60. Caulis superne longe nudus ... ... __. ■... L oblongifolia B. et R. 



Caulis alte foliatus ... ... ... ... ... ... .__ ... 61. 



61. Braeteae calycisque segmenta spathulato-lanceolatae ; flores 



flavi, calcar corolla longius _._ .._ ... ... ... L. verticillata Boiss. 



Bracteœ lineari-lanceolatae ; calycis segmenta oblongo- 

 lanceolata ; flores albidi ; calcar corolla reliqua brevius : 



L anticaria B. et R. 



62. Semina late marginata ... ... ... ... ... ... ... ... ... 63. 



Semina anguste marginata ._. ... ... ... ... ... 82. 



63. Caulis superne spatio ± longo nudus apbyllus... ... ... ... 64. 



Caulis usque ad inflorescentiam foliatus ... ... ... 69, 



64. Pedicelli calyce parum breviores vel longiores... 65. 



