CRUCIFER^E. 27 



9. SUBULARIA. Linn. Awl-wort. 

 (From the Latin subula, an awl ; the leaves being subulate, or awl-shaped.) 



Pouch oval ; dissepiment elliptical ; valves convex ; cells 

 many-seeded. Stigma sessile. Cotyledons incumbent, linear, 

 2 -plicate. 



fit aquatica Linn. 



Margins of ponds. Maine. July. 1\.. Scape 2 4 inches high. Leaves 

 few, radical, awl-shaped, 1 3 inches long. Ftowers small, white, in corymbs. 

 Valves more convex or turgid than in Draba. Water Awl-wort. 



10. LUNARIA. Linn. Honesty. 



(From the Latin luna, the moon ; in allusion to the form and appearance of its 

 pouch.) 



Pouch pedicellate, elliptic or lanceolate ; valves flat. Funicles 

 long, adhering to the dissepiment. Calyx somewhat bisaccate. 

 Petals nearly entire. Stamens not toothed. 



L. biennis D. C. : pouch elliptical, obtuse at each end. L-annua. Linn, 

 Nutt. 



Fields. Penn. May, June. .Naturalized near Philadelphia. Nutt. 



Biennial Honesty. 



II. SILIQUOS^:. Pod mostly long and narrow. 



11. DENT ARIA. Linn. Tooth-wort. 



(From the Latin dens, a tooth ; on account of the tooth-like scales of the root? 



Pod narrow-lanceolate, with a long tapering style; valves 

 flat, nerveless, often opening elastically. Seeds ovate, not mar- 

 gined, in one row. 



1. D. laciniataMuhl.: cauline leaves 3, verticillate, on short petioles; 

 ternate ; leafets 3-parted ; segments linear, entire, or coarsely toothed ; root 

 moniliform. D. concatenate, Mick. 



Woods. Throughout the U. S., but rather rare. April, May. Q.Stem 

 6 12 inches high, simple. Flowers in loose terminal racemes, pale rose-colored 

 or white. Petals wedge-obovate, attenuated below. Pod an inch long. 



Common Tooth-wort. 



2. D. diphytta Mich. : cauline leaves mostly 2, on short petioles, ternate ; 

 leafets ovate-oblong, unequally and coarsely serrate or laciniate. 



Woods. Throughout Can. and U. S. May. %.Stem 610 inches high. 

 Leaves large, opposite or closely approximate above the middle of the stem. 

 Flowers white or pale purple, larger than in the preceding species. Pod about an 

 inch long. Pepper-root. 



3. D. heterophylla Nutt : stem 2-leaved ; leaves ternate, petiolate ; leafets 

 linear, sub-lanceolate, acute, entire, margin rough, ciliate ; radical leaves 

 ovate-oblong, incisely and coarsely toothed. 



Woods. Penn. to Ken. June. %.Root tuberous. Corymb about 9-flowered. 

 Flowers pale purple, about as large as those of Cardamine pratensis. The smallest 

 of the genus. Small Tooth-wort. 



