30 



Rhodora 



[February 



.5 mm. long, much shorter than the capsule. 

 Leaf-blades shortly petioled. Racemes 5- 

 10-flowered, the pedicels less than 1 mm. 



long 20. V. javanica. 



Leaf-blades oval, crenate-serrate, narrowed to a 

 petiolar base. Sepals 2-3 mm. long, oblong- 

 lanceolate, shorter than the capsule. Capsule 

 as wide or wider than long, notched, with hairs 

 dark-jointed and some of them glandular. 

 Style 2.5-3.5 mm. long, shorter than the cap- 

 sule. Plants repent, ascending at apex. 

 Corolla 8-9 mm. long, violet-blue. Capsule 5 mm. 

 long, as wide as long, its lobes rounded, the 

 most distal point of each midway between 

 the style and the lateral margin. Racemes 

 3-5-flowered, the pedicels longer than the 

 capsule. Leaf -blades about 2 cm. long, cre- 

 nate-serrate with very low teeth, hirsute 

 above, glabrous beneath, conspicuously cili- 



ate. Stem less than .5 dm. long. 21. V. grandiflora. 



Corolla 3-4 mm. long, pale-lavender, with lavender 

 blue lines on the posterior side. Capsule 

 3-4 mm. long, wider than long, its lobes with 

 the most distal point of each near the lateral 

 margin. Racemes 20-30-flowered, the pedi- 

 cels shorter than the sepals or capsules. Leaf- 

 blades 2-5 cm. long, crenate-serrate with 

 prominent teeth, pubescent on both surfaces 

 but not obviously ciliate. Stem extensively 



repent, 2 dm. long or longer 22. V. officinalis. 



A.'. Capsule glabrous or with a few minute gland-tipped 

 hairs. Stems, pedicels, leaves and sepals glabrous, 

 or very rarely pubescent. Leaf-blades oblong- 

 ovate to linear, finely serrate to entire. Aquatics. 

 B. Capsule not conspicuously wider than long, and 

 scarcely or not two-lobed. Sepals nearly or quite 

 equaling the capsule, slightly unequal, the an- 

 terior longer. Leaf -blades oblong-ovate to lance- 

 olate, obtuse to acuminate, serrate to crenate-ser- 

 rate. Stem glabrous or pubescent with minute 

 gland-tipped hairs. Racemes usually of more 

 than 10 flowers, the relatively stout pedicels as- 

 cending-spreading. 

 Leaf-blades all petioled, prevailingly ovate-ob- 

 long, acutish to obtuse. Racemes usually 

 10-25-flowered, the pedicels 5-13 mm. long. 

 Plants mainly emersed, glabrous throughout. 

 Capsule slightly wider than long, notched. 

 Leaf -blades oblong-oval, widest at or above the 

 middle, narrowed at base, mostly broadly 

 rounded at apex. Style 1.5-2 mm. long, 

 obviously shorter than the capsule. Plant- 

 extensively repent, ascending at apex. . . .23. V. Beccabunga. 

 Leaf-blades lanceolate to ovate, widest at or 

 near the base, mostly acute or acutish at 

 apex. Style 2-3 mm. long, scarcely shorter 

 than the capsule. Plant repent only at 

 base, soon ascending-erect 24. V. americana. 



