98. SCROPHULARIACEJS. 



There may be other exceptions besides those indicated in the following key. 

 Concerning Dopatrium I am somewhat doubtful. According to a field-note the 

 large lateral lobes of the lower lip are exterior in bud, but more material is 

 required. The aestivation in other genera requires further examination in the field 

 with fresh specimens. The odd sepal is always median posterior and the odd petal 

 or midlobe of lower lip is median anterior. But twisting of the pedicel apparently 

 sometimes takes place in Dopatrium, bringing the large lower lobes uppermost in 

 flower. The genus Lindenbergia scarcely seems to me to belong to the Tribe 

 Gratiolese. 

 I. Corolla 2-lipped or lobes 5, the 2 posterior lobes (sometimes 



connate in the upper lip) exterior in bud (exc. 8. 9 and 10). 



Genera 1-18 :— 



A. All leaves alternate. Corolla rotate. St. 4 , . .1, Cehia. 



B. All leaves or the lower onlv opposite (Antirrhinoidea?, 



Gen. 2-18) :— 



1. Corolla 2-lipped, tube saccate or spurred, mouth 



closed : — 



Corolla spurred 2. Linaria. 



Corolla broad and saccate at the base .... ^.Antirrhinum. 



2. Corolla neither saccate nor spurred, mouth open : — 



a. Cor. -tube very long and narrow. Fls. cymose, red 4, Russelia. 



b. Cor.-tube not very long, Fls. axillary or race- 



mose :— 

 i. St, 4 didynamous, anthers finally 1-celled :— 



Viscid herb. Lower leaves pinnatifid . . .5. Sufera. 

 ii. St, 4 or 2, usually didynamous. anthers 2 or all 

 2-celled (Gratioles, Gen. 6-16) :— 

 + Anther-cells not divaricate or separated : — 

 ! Stamens 4 perfect, included in the tube : — 

 Leaves mostly radical. Fls. in subsecund 



racemes. Sepals often broad . , .6, Mazut. 

 L. cauline. Fls. not secund. Upper sepal 



often very broad 7. Jlerpestis. 



L. radical and cauline. Fls. not secund. 



Sepals equal, narrow 8. Mimulu*. 



!! St. 2 only perfect, staminodes 2 minute 

 included : — 

 Slender marsh herb with fls. in distant 



pairs 9. Dopatrium. 



W Anther-cellB, if perfect, divaricate or .separate : — 

 ! St. 4 perfect, all included in the tube :— 



* Capsule 2-valved. Lower lip exterior in 



bud 10. Liudenbergia. 



** Capsule 4-valved : — 



§ Sep, unequal, one anther- cell often 



imperfect 11. Adenotma. 



§§ Sep. equal, all anthers with 2 perfect 

 cells:— 

 Erect viscid-pubescent herbs. Seeds 



ellipsoid 12, Sfemcdia. 



Marsh herbs, habit various. Seeds 



angular 13, Limnophila. 



!! St, 4, 2 perfect in the tube, 2 in the throat 

 perfect or reduced to staminodes:— 



* Calyx winged. St. 4 perfect, Fls. often 



showy 14. Torenia. 



** Calyx not winged, St. 4 or 2 perfect. 

 Fls. small :— 

 Leaves with a single midrib or penni- 



nerved 15, VandeUia. 



Leaves 3-5-nerved from base . , . IQ. Linderuia 



{[lysanthe>f). 

 ii, St. 2, anthers 1-celled, staminodes 0. Minute 

 marsh herbs with minute axillary fls. (Limo- 

 selleje) :— 



Calyx tubular, angled, 5-fid 17. Microcarpaa. 



Calyx not angled, 3-4-iobed 18, Glctsostigma. 



018 



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