l8o MENYANTHACEAE (BUCKBEAN FAMILY) 



FF. Corolla funnelform, its lobes not narrowed at base, its appendages laciniate- 



toothed or -cleft. 



H. Stem 2-3 dm. high; leaves oblong to linear; bracts lanceolate to linear; 

 calyx lobes linear to narrowly lanceolate; corolla 2-2.5 cm. long. E. 



G. af finis 



HH. Stem 3-6 dm. high; leaves ovate to oblong; bracts oblong to ovate; 

 calyx lobes oblong to ovate-lanceolate; corolla 3-3.5 cm. long. E. 



G. oregana 



AA. Corolla without teeth or lobes or extended plaits in the sinuses; annual. 

 I. Corolla 25-50 mm. long, its lobes often fimbriate or erose. 



J. Calyx lobes acutely keeled, 2 larger and narrower. E. G. serrata 



JJ. Calyx lobes not keeled, all about equal. C. G. simplex 



n. Corolla 5-7 mm. long, its lobes entire. 



K. Leaves 4-12 mm. long; calyx lobes ovate to oblong; corolla 5-8 mm. long. E. 



G. tenella 



KK. Leaves 12-50 mm. long; calyx lobes lanceolate to linear; corolla 10-17 mm. 

 long. W. C. E. G. acuta 



FRASERA (COLUMBO) 



Leaves opposite or whorled. Flowers many, clustered. Corolla 4-parted. 

 Stamens on the very base of the corolla. Capsule ovate. (Honor of 

 John Fraser, an American plant collector.) 



A. Leaves with firm white border. 



B. Whole plant puberulent; corolla lobes acuminate. E. F. albicualis 

 BB. Whole plant glabrous; corolla lobes obtuse or acute. E. F. nitida 



AA. Leaves not bordered. 



C. Leaves in whorls of 2 or 3; corolla blue-purple; capsule flattened parallel to the 

 partition; seed globose. E. F. fastigiata 



CC. Leaves in whorls of 4 or 6; corolla greenish; capsule flattened perpendicular to 

 the partition; seed oblong. E. F. speciosa 



MENYANTHACEAE (BUCKBEAN FAMILY) 



Herbs, perennial, aquatic or in marshes; rhizome creeping. 

 Leaves basal or alternate, glabrous, crenate or j-foliolate. Flowers 

 clustered, regular, perfect. Calyx deeply 5-parted, persistent. 

 Corolla funnelform to rotate, 5-lobed or -cleft. Stamens 5, on the 

 corolla, alternate with the corolla lobes. Ovary superior or half- 

 superior, i-celled. Fruit a capsule, oval. Seeds few, flattish, 

 smooth. 



A. Leaves simple; corolla lobes entire; style short or none. W. (Gk. nephros = 

 the kidneys, phytton = a leaf, idios = peculiar; hence a peculiar kidney-shaped 

 leaf.) Nephrophyllidium crista-galli (DEER CABBAGE) 



AA. Leaves 3-foliolate; corolla lobes fimbriate; style subulate. W. C. E. (.Gk. 

 mene = a month, anthos = a flower.) Menyanthes trifoliata (BUCKBEAN) 



