444 FLORA. 



3. Silique elliptic or oblong, very flat, 2-3 times as long as broad, clearly stipitate. 

 Flowers violet ; funiculus of the seed adnate to the septum of the pod. 



21. Lunar ia. 

 Flowers yellow ; funiculus of the seed free from the septum. 22. Selenia. 



f"f" Pod an orbicular globose or oblong silicle, or but little more than twice as long 

 as wide (except in some species of no. 29). 



1. Silicle globose, or flattened parallel with the septum. 



a. Plants terrestrial, or not strictly aquatic. 



4- Silicle globose, or terete-oblong, little or not at all compressed. 

 Plants not maritime. 

 Petals not 2-cleft. 



Seeds minute, round, not flattened, in 2 rows in each cell. 



1 8. Roripa. 

 Seeds flat ; silicle inflated ; plants stellate-pubescent. 



25. Lesquerella. 



Petals 2-cleft. 37. Berteroa. 



Plants maritime, fleshy, northern. 7. Cochlearia. 



-H- Silicle didymous, its cells globose-inflated. 24. Physaria. 



-f -f -)- Silicle compressed or flat, many-seeded. 30. Draba. 



2-8-seeded. 



Flowers yellow. 35. Alyssum. 



Flowers white. 36. Koniga. 



+ +++ Silicle pear-shaped, or obovoid, many-seeded. 28.- Camelina. 



b. Wholly submersed small aquatic ; silicle globose or oblong. 3. Subularia. 



2. Silicle flattened at right angles to the narrow septum. 



Seeds several in each cell of the silicle. 



Silicle triangular, obcuneate. 27. Bursa. 



Silicle elliptic, wingless, its valves with a strong midvein. 26. Hutchinsia. 



Silicle oblong or orbicular, winged all around. 6. Thlaspi. 

 Seeds solitary in each cell, compressed. 4. Lepidium. 



* * Pod indehiscent, short or elongated. 



Pod broader than long, more or less didymous. 5. Coronopus. 



Pod globose, reticulated. 29. Neslia. 

 Pod elongated. 



Pod of 2 joints, separating at maturity ; plants maritime. 10. Cakile. 



Pod constricted between the seeds, not jointed, beaked. 15. Raphanus. 



Pod obcuneate to spatulate, flattened. n. Myagrum. 



i. STANLEY A Nutt. 



Glabrous and glaucous, perennial tall herbs, with large yellow bractless flowers 

 in elongated terminal racemes. Sepals linear, narrow. Petals narrow, long- 

 clawed. Stamens 6, very nearly equal; anthers twisted. Ovary short-stipitate; 

 style short or none. Siliques linear, long-stipitate, spreading or recurving, some- 

 what compressed, dehiscent, the valves with a strong midnerve. Seeds in I row 

 in each cell, numerous, pendulous. Cotyledons straight, incumbent. [Named for 

 Lord Edward Stanley, President of the Linnaean Society.] About 3 species, of 

 western N. Am. 



i. Stanleya pinnata (Pursh) Britton. STANLEYA. (I. F. f. 1681.) Stems 

 0.6-1.5 m - ta -l'' sometimes decumbent. Lower leaves pinnatifid or pinnately 

 divided, or entire, 1-2 dm. long, long-petioled ; upper leaves similar, or less di- 

 vided, or narrowly oblong or lanceolate, entire, short-petioled; petals 1.5-2.5 cm. 

 long; filaments filiform, exserted; siliques 5-8 cm. long, about 2 mm. thick, 2-3 

 times as long as their stipes, downwardly curved, somewhat constricted between 

 the seeds when dry. In dry soil, S. Dak. and Neb. to Cal., N. Mex. and Ariz. 

 May-July. 



i. THELYPODIUM Endl. 



Erect biennial or perennial herbs, with entire toothed or pinnatifid leaves, and 

 racemose flowers. Siliques nearly terete, linear, with a short stipe in some species; 

 valves i -nerved, dehiscent; stigma nearly entire. Seeds in i row in each cell of 

 the pod, oblong, marginless ; cotyledons obliquely incumbent. [Greek, female- 

 stalk, from the stiped ovary.] About 18 species, natives of N. Am. 



i. Thelypodium integrifolium (Nutt.) Endl. ENTIRE-LEAVED THELY- 

 PODIUM. (I. F. f. 1682.) Glabrous, 0.9-1.8 m. high. Leaves entire, thickish. 



