io8 



PAPAVERACEAE. 



[VOL. II. 





io. FUMARIA L,. Sp. PI. 699. 1753. 



Diffuse or erect (sometimes climbing) herbs, with finely dissected leaves, and small race- 

 mose flowers. Sepals 2, scale-like. Petals 4, erect-connivent, the outer pair larger, i of them 

 spurred, the inner narrow, coherent at the apex, keeled or crested on the back. Stamens 6, 

 diadelphous, opposite the outer petals. Ovule i; style slender; stigma entire or lobed. 

 Fruit i-seeded, nearly globose, indehiscent. [Name from the Latin, smoke, from the smoke- 

 like smell of some species.] 



About 15 species, all natives of the Old World. 



i. Fumaria officinalis L,. Fumitory. 

 Hedge Fumitory. (Fig. 1680.) 



Fuinaria officinalis L- Sp. PI. 700. 1753. 



Glabrous, stems diffuse or ascending, freely 

 branching, 6'-$ long. Leaves petioled, finely 

 dissected into entire or lobed linear oblong or 

 cuneate segments; racemes axillary and terminal, 

 1'-$' long, narrow; pedicels i // -2 // long, axillary 

 to small bracts; flowers purplish, 2 // ~3 // long, 

 darker at the summit; spur rounded, }&" long; 

 nut i" in diameter, depressed-globose. 



In waste places and on ballast, occasional about 

 towns and villages, Nova Scotia to Florida and the 

 Gulf States, and locally in the interior. Fugitive or 

 adventive from Europe. Summer. 



Fumaria parviflora Lam., found on ballast about 

 the seaports, may be distinguished by its still 

 smaller paler flowers (2"), very narrow sharp and 

 channeled leaf -segments, and its apiculate nut. 



Family 32. CRUCIFERAE B. Juss. Hort. Trian." 



MISTARD FAMILY. 



Herbs, rarely somewhat woody, with watery acrid sap, alternate leaves, and 

 racemose or corymbose flowers. Sepals 4, deciduous, or rarely persistent, the 

 2 outer narrow, the inner similar, or concave, or saccate at the base. Petals 

 4, hypogynous, cruciate, nearly equal, generally clawed. Stamens 6, hypogy- 

 nous, tetradynamous, rarely fewer. Pistil i, compound, consisting of 2 united 

 carpels, the parietal placentae united by a dissepiment; style generally persis- 

 tent, sometimes none; stigma discoid or usually more or less 2-lobed. Fruit a 

 silique or silicic, generally 2-celled, rarely i -celled, in a few genera indehiscent 

 and lomentaceous. Seeds attached to both sides of the septum; endosperm 

 none; cotyledons incumbent, accumbent or conduplicate. 



About 185 genera and 1500 species, of wide geographic distribution. 



The following wholly artificial key is designed to apply only to the species and genera of our 

 Flora. The natural alliances of the genera are largely based on minute characters. The family is 

 also known as BRASSICACKA i 



k Pod a silique or silicic, dehiscent into two valves to the base, 

 t Pod an elongated-linear silique, or at least twice as long as wide. (See also species of No. 29. > 



1 . Silique borne on a long stipe. I. Slanleya. 



2. Silique terete, 4-sided, or compressed, very short-stipitate, or sessile on the receptacle. 



a. Silique tipped with the short slender style, or style none. 

 Seeds globose or oblong, wingless. 



Seeds in 2 rows in each cell of the p^d. 



Pubescence, when present, of simple hairs. 17. Roripa. 



Pubescence of forked hairs; leaves finely dissected. 30. Sophia. 



Seeds in only i row in each cell. 



Leaves auricled at the base; flowers violet. 16. lodanlluts. 



Leaves reniform or cordate, undulate or repand; flowers white. 8. Alliaria. 

 Leaves dentate or pinnatifid; hairs simple; flowers yellow. 9. Sisymbrium. 

 Leaves finely dissected; pubescence of forked hairs; flowers yellow. 30. Sophia. 

 Leaves entire, or slightly toothed. 



Stigma nearly entire, discoid; plant glabrous. 

 Stigma 2-lobed ; plants more or less pubescent. 

 Flowers white or pink, small. 

 Valves of the silique nerved. 

 Valves of the silique nerveless, rounded. 

 Flowers yellow. 



Flowers large, purple, purplish or white. 

 Seeds flat, wingless or winged. 



Siliques 4-angled, the valves keeled; flowers yellow. 

 Siliques flat or flattish. 



2. Thely podium. 



9. Sisymbrium. 

 31. Stenophragma. 

 33. Erysimtnn. 

 37. Hesperis. 



15. Barbarea. 



