200 American Midland Naturalist Monograph No. 7 



sandy soil in the northern half of 111. May-June. Blue Toad- 

 flax - -.L. canadensis (L.) Dum.-Cours. 



3. Corolla 10-12 mm long, the spur 5-9 mm long; seeds rugulose; 

 sandy soil, rare; Alexander Co L. tcxana Scheele 



7. Chaenorrhinum Reichenb. 

 C. minus (L.) Lange. Dwarf Snapdragon. Roadsides and waste 

 places, especially along cindery railroad embankments; nat. from Eur. 



May-Aug. [L. minor (L.) Desf.]. 



8. Kickxia Dumort. 



K. elatine (L.) Dumort. Waste ground; nat. from Em-. June-Sept. 

 [Linaria elatinc (L.) Mill.]. 



9. Cymbalaria Hill — Kenilworth Ivy 

 C. muralis Gaertn., Mey. & Scherb. In waste places, greenhouses, 

 old gardens or woodlands, rarely escaped from cult.; introd. from Eur. 

 May-Oct. 



10. Lindernia All. 

 1. Lower pedicels about as long as the subtending leaves; calyx-lobes 



about ecjualling or slightly longer than the capsules; seeds pale 



yellow; moist ground, often along streams, ditches, and ponds, 



locally abundant throughout 111. July-Sept 



- --- L. dubia (L.) Pennell 



1. Pedicels much longer than the subtending leaves; calyx-lobes 



usually slightly shorter than the capsule; seeds brownish yellow; 



river banks, muddy shores, borders of ponds. Jidy-Oct 



- L. anagallidea (Michx.) Pennell 



1 1 . Gratiola L. 



1. Coi^oUa golden-yellow, 10-15 mm long; sterile filaments 2, slender; 

 capsule 3 mm long; seeds brown; leaves entire or remotely den- 

 ticulate; plants perennial, with rhizomes; wet ground, rare; 



Forest Park. Cook Co., Seymour. [G. lutco Raf.] 



- G. aurea Muhl. 



1. Corolla light yellow or white, 6-12 mm long; sterile filaments 



minute or none; capsules 3-7 mm long; seeds yellow; leaves 



repand to serrate; annuals with fibrous roots. 



2. Pedicels slender, 1-2.5 cm long in iruit, ec}ualling or exceeding 



the leaves; plants glandular-puberulent ; capsules ovoid; wet 



ground and borders of ponds, not uncommon. May-Aug. 



[G. virginiana sensu auth., non L.] G. neglecta Torr. 



2. Pedicels stouter, usually shorter than the leaves, less than 1 cm 

 long; plants glabrous; capsules globose; shores and ditches, 

 less common than the preceding. May-June. [G. sphaero- 

 carpa Ell.] G. virginiana L. 



