RANUNCULACELE. 15 



3. THALICTBT7M, Tournefort. 



1. T. polycarpiun, Watson. Akenes in dense heads, 2 or 3 lines long. 



2. T. occidentalis, Gray. Akenes 1 to 6, 3 or 4 lines long, narrower. 



3. T. eparsiflorum, Turcz. Anthers obtuse; fruit heads nodding. 



4. TBATTTVETTEBIA, Fischer & Meyer. 

 L T. grandis, Nutt Slender: leaves few, 5-7-lobed, laciniate-toothed. 



6. MYOSTTBUS, Linnaeus. 



1. M. minimus, Linn. Receptacle in fruit 1 or 2 inches long. 



2. M. aristatus, Benth. Receptacle shorter, akcnes beaked. 



3. M. sessilis, Watson. Flowers sessile: fruit heads 2 to 6 lines long. 



6. BANTJNCTJUJS, Tinn r 



* Aquatic: leaves round-reniform and Idled or, when submersed, Jiliform-d issecled. 



Petals white: akenes wrinkled crosswise. 1, 2 



Petals yellow: akenes not wrinkled 6 



* * Not aquatic : leaves all radical : scapes naked or 1-2 bracteate t mostly 1-Jlowtred: 



sepals pelaloid. 



Sepals white: petals minute: leaves cordate or rcniform 3 



Sepals pinkish, persistent petals pink: leaves compound 4 



* * * Usually growing in wet places. 



Leaves all entire, oval or narrower 7, 8, 9, 10 



Leaves rather fleshy, simple or 3-foliolate; lobes rounded 5, 12 



* y i aquatic fat gome species growing in wet places: leaves, variously divided 



or lobed. 



Alpine, tnf ted: leaves round-reniform to cuneate, small 11 



Some or all the leaves ternately compound: stems branching. 



Petals usually more than 6 15 



Petals usually 5 13, 16, 17, 18, 10 



1. B. aquatilis, Linn. var. heterophyllus. Sepals deciduous: receptacle hairy. 



2. B. Lobbii, Iliern. Sepals persistent enclosing the few akenes. 



3. B. hystriculu.', Gray. Akenes 2 or 3 lines long, tapering ; beak hooked. 



4. B. Anderson!, Gr. Akenes bladdery, 4 or 5 lines long. 



6. Bu Cymbalaria, Pursh. Akenes enlarging upward; beak oblique. 



6. B. multifidus, Pursh. Petals 5 to 8 with a large scale; beak straight. 



7. B. pusillus, var. laindheimeri, Gr. Akenes granulate. 



8. B. Flammula, Linn, var. rep tans, Gr. Akenes subglobose. 



