CALLIIEICHE. 311 



1. Oallit'eiche Linn. Water-Sfcarwort. 



A, L. naiTowed at the base ; lower linear, submerged ; upper 

 floating, broad, often spathulate and forming a rosette. Fr. 

 of 4 lobes cohering in pairs. 



1. C. ver'na (L.) ; fr. nearly sessile longer than broad, lohes 

 parallel hluntly keeled on the back convex on the sides, styles erect 

 deciduous, bracts straightish deciduous. — U. B. 722. C. vernalis 

 Kitz. S. V. 129. — Floating 1. ovate-spathulate, in a rosette, 

 rarely wanting. Fr. small ; keels of each pair of lobes con- 

 verging. — Common in ponds and slow streams. A. or P. IV. — 

 IX. E. S. I. 



2. C. obtusan'gula (Le G.) ; fr. nearly sessile, lobes parallel 

 with rounded edges, styles erect or spreading persistent, bracts 

 persistent. — L. all obovate, in a rosette, or lower 1. linear. Fr. 

 large, quite blunt and rounded at the edges. — Brading, Isle of 

 Wight. {J. of B. viii. 842.) Aldreth Bridge, Cambridge- 

 shire. A. or P. v.— IX. E. 



3. C. stag'nalis (Scop.) ; fr. nearly sessile, lobes winged on the 

 back, styles erect in flower persistent and reflexed closely with 

 fruit, bracts falcate persistent. — B. B. 8. 2864. R. v. 129. — 

 Floating 1. rouud-obovate-spathulate, in a close rosette, often 

 wanting. Fr. twice as large as that of C. vema, pale when dry ; 

 lobes parallel (C. platycarpa Kiitz.) or slightly spreading- (C. 

 stagnalis Kiitz.). — Common, especially on mud. A. or P. V. — 

 IX. E. S. I. 



4. C. hamuldta (Kiitz.) ; fr. broader than long nearly sessile 

 or stalked, lobes parallel with a bhirtt dorsal ridge flat on the 

 sides, styles divaricate and reflexed over the sides of the fruit, 

 bracts falcate very deciduous. — R. v. 180. Sy. B. B. 1273. — 

 L. linear ; upper ones broader in the middle ; uppermost ovate- 

 spathulate. JSracts hooked, overlapping, perhaps confined to 

 the male flowers. Fr. small, the size of that oi C. verna. — ^. 

 C. pedunculata (DC.) ; 1. lineax, upper 1. rather broader, fr. 

 stalked. Plant usually very small. E.B. S. 2606. — Lakes and 

 streams. ^. Marshes. A. or P. VI.— IX. E. S. I. 



B. L. uniform, enlarged at the base, linear. Fr. of 4 

 nearly free lobes. 



5. C tnincata (Guss.) ; fr. shortly stalked, lobes with a blunt 

 dorsal ridge, styles reflexed-patent, bracts 0. — C. autumnalis 

 Hook, (not L.). E. B. 8. 2606. — L. all submersed, uniform, 

 very abrupt at the end, translucent gi-een. — Amberley, Suss. 

 Glansiskin, Co. Cork. A. or P. IV.— IX. E. I. 



6. C. autumnalis (L.) ; fr. nearly sessile, hbes broadly and 



