somewhat subulate, scabrous above and on the margins; pedicels to 2 mm. long; 

 calyx tube 3.5-5 mm. long, the midvein keeled into the lobes; calyx lobes tri- 

 angular-lanceolate or subulately attenuate from a broad base, very acute, in age 

 spreading, 3.5-6.5 mm. long, almost always as long as or longer than the tube; 

 corolla deep-pink to white and lavender-tinged, 2.5-3 cm. long; capsule sub- 

 globose, about 8 mm. long. Gerardia heterophylla Nutt. 



In prairies and plains, grasslands and fallow fields, in wet soil of water- 

 filled pits, wet gravelly soil on edge of lakes and ponds, sometimes on rocky 

 soils or in open woodlands, usually somewhat moist, in Tex. in a line from Gray- 

 son Co. to Cameron Co. and eastw., and in Okla (Love, LeFlore and Ottawa cos.), 

 June-Oct.; from Mo. and Okla. to La. and Tex. 



4. Agalinis purpurea (L.) Penn. 



Plant to 12 dm. high, usually much smaller, smooth to scabridulous, commonly 

 angled, with virgate rather wide-spreading branches; leaves usually spreading or 

 widely arcuate-ascending, narrowly linear, to about 4 cm. long and 4 mm. wide, 

 either somewha:t scabrous or smooth with merely scabrous margins; axillary 

 fascicles sometimes slightly developed; flowers few to many; pedicels 1-4 mm. 

 long, shorter than the calyx; calyx tube 2-4 mm. long; calyx lobes triangular, 

 acute to acuminate, 1 mm. long or more; corolla rose-pink to pink, 2.5-3 cm. 

 long; capsule globular, 4-6 mm. long. Gerardia purpurea L. 



Moist sandy soil in bogs, seepage areas, moist prairies, open pinelands, 

 barrens and along shores in e. Tex., Aug.— Nov.; from N.S. to Minn., s. to Fla. and 

 Tex.; also Mex. and the W. L 



5. Agalinis fasciculata (Ell.) Raf. 



Plant to about 7 dm. high, the stem scabrous-puberulent, nearly terete at 

 base, the branches angled; leaves erect-ascending to closely arcuate-ascending, 

 scabrous, commonly 1-2 mm. wide, the axillary fascicles usually well-developed; 

 bracteal leaves reduced, much shorter than the flowers; racemes elongate, 12- 

 to 30-flowered; pedicels 2-4 mm. long at anthesis; calyx tube 3-4 mm. long, with 

 subquadrate sinuses, the acuminate lobes to 2 mm. long; corolla 2-3.5 cm. long, 

 rose-pink, with rounded to truncate spreading lobes 7-10 mm. long; anther cells 

 2.5-3.5 mm. long, with acute to cuspidate bases; capsule globose-ovoid, 5-6 mm. 

 long; seeds to 0.8 mm. long. Gerardia fasciculata Ell. 



In dry or moist soils in savannahs, open weedy areas, on edge of ponds and 

 lakes, open flatwoods and in dune hollows and tidal marshes, in e. Okla. (Ottawa 

 Co.), in s.e., e. and n.-cen. Tex., Sept.-Oct.; from Fla. to Tex., n. to Md., Mo., 

 Okla. and Ark. 



17. Buchnera L. Bluehearts 



Perennial rough-hairy herbs that turn black in drying, apparently root-parasitic; 

 leaves sessile, opposite or the uppermost alternate; flowers opposite in a terminal 

 spike, bracted and with 2 bractlets; calyx tubular, obscurely nerved; corolla with 

 a straight or curved tube and an almost equally 5-cleft limb, the lobes oblong to 

 cuneate-obovate, flat; stamens included, the anthers 1 -celled; style clavate and 

 entire; capsule bivalved and many-seeded. 



About 100 species, mostly in the Old World tropics and subtropics. 



1. Leaf blades clearly 3-veined, ovate-lanceolate, sinuate-dentate to somewhat 

 lacerate; corolla lobes 5-8 mm. long; capsule usually 6-7 mm. long; 

 stem usually hirsute-pubescent 1. B. americana. 



1. Leaf blades obscurely or not 3-veined, elliptic-lanceolate, repand-dentate to 

 entire; corolla lobes 2-5 mm. long; capsule about 5 mm. long; stem 

 pilose to glabrate 2. B. floridana. 



1498 



