108. SCROPHULARIACEAE 203 



19. Synthyris Renth. 

 (Besseya Rydb. ) 



S. bulla (Eaton) Heller. Sandy or gravelly soil, locally in n.w. 111., 

 extending southward to Henderson Co. ; also in Cass and Menard 

 counties. May- June. [S. lunii^htoniaua Benth.] 



20. Aureolaria Raf. — False Fo.xglove 

 {Dasystoma Benth.) 

 1. Plants perennial, not glandular; corolla 3-5 cm long; .seeds winged. 

 2. Plants glabrous or nearly so; stem glaucous; sandy soil in open 

 woods; said to be parasitic on roots of Quercus spp. Aug.- 

 Sept. [D. virginica ex p. sensu Britt. ; D. quercijolia (Pursh) 

 Benth.; Gerardia virginica sensu auth., non Rhinanthus vir- 



ginicus L.] A. flava (L.) Farw. 



2. Plants grayish-puberulent; open woods, local. July-Oct. [A. 

 grandiflora pule lira Pennell] ....A. grandiflora (Benth.) Pennell 

 1. Plants annual, more or less glandular; corolla 2-3 cm long; cap- 

 sules ellipsoid, 1-1.5 cm long; seeds wingless; dry open woods; 

 known from Cook, Kankakee, Will, and Winnebago counties. 



Aug. -Sept. [A. pedicularia intercedens Pennell] 



- A. pedicularia (L. ) Raf. 



21. Gerardia L. 



(Agalinis Raf.) 



1. Leaves auriculate at base, lanceolate; flowers 1.5-2 cm long, nearly 

 sessile; anthers of the shorter filaments smaller; fields and open 

 woods. Aug.-Sept. [Tornanthera auriculata (Michx.) Raf.; 



Otophylla auriculata (Michx.) Small] G. auriculata Michx. 



1. Leaves linear, entire, not auriculate; anthers uniform. 



2. Pedicels of the flowers less than twice the length of the calyx. 

 3. Capsules ellipsoid. 8-10 mm long; calyx-teeth triangular- 

 lanceolate; corolla 18-25 mm long; leaves scabrous; gravel- 

 ly or sandy .soil, local. Aug.-Sept G. aspcra Dougl. 



3. Capsules subglobose, 3-6 mm long; calyx-teeth subulate, .short. 



4. Flowers 2-3 cm long; moist sandy soil. Aug.- Oct 



G. purpurea L. 



4. Flowers 14-18 mm long; moist ground, not conunon. Aug.- 

 Sept G. paupercula A.Gray 



2. Pedicels of the flowers moi'e than twice the length of the calyx. 

 5. Lea\-es linear to linear-lanceolate, flat; moist ground, and on 



wooded slopes, local. Aug. -Oct. G. IcnuijoUa Vahl 



5. Leaves filifonn-linear, the margins revolute. 



6. Stem strict, simple or few-branched, striate-angled, the 

 angles minutely scabrellous; dry sandy soil, local. Aug.- 

 Sept - G. skinncriana Wood 



6. Stem usually much-branched, nearly terete (at least 



