GENUS 7. 



MUSTARD FAMILY. 



'57 



7. CAMELINA Crantz, Stirp. Austr. i : 18. 1762. 



Erect annual herbs, with entire toothed or pinnatifid leaves, and small yellowish flowers. 

 Silicles ohovoid or pear-shaped, slightly flattened; valves very convex, i-nerved. Seeds 

 several or numerous in each cell, oblong, marginless, arranged in 2 rows. Stigma entire ; 

 style slender. Cotyledons incumbent. [Greek, low flax.] 



A genus of about 5 species, natives of Europe and eastern Asia. Type species : Camelina 

 sativa (L.) Crantz. 



i.C. saliva. 



2. C. microcarpa. 



Glabrous, or nearly so ; pod 3"-4" long. 

 Pubescent, at least below ; pod 2"-$" long. 



i. Camelina sativa (L.) Crantz. Gold-of- 

 Pleasure. False or Dutch Flax. Fig. 2020. 



Myagrum sativum L. Sp. PI. 641. 1753. 

 Camelina sativa Crantz, Stirp. Austr. i: 18. 1762. 



Glabrous, or nearly so, simple, or branching above, 

 i-2 high. Lowest leaves petioled, entire or toothed, 

 2'~3' long, lanceolate, acutish; upper leaves sessile, 

 smaller, clasping by a sagittate base, mostly entire; 

 pedicels slender, spreading or ascending, 6"-io" long in 

 fruit; flowers numerous, about 3" long; pod obovoid or 

 pyriform, margined, slightly flattened, 3"-4" long, about 

 2 "-3" wide; style slender, \\" long. 



In fields (especially where flax has been grown) and 

 waste places, Nova Scotia to British Columbia, Pennsylva- 

 nia, Kansas and California, naturalized from Europe. Old 

 name, myagrum. Cultivated in Europe for the fine oil of 

 its seeds ; nutritious to cattle. Oil-seed. Siberian oilseed. 

 Cheat. Madwort. June-July. 



2. Camelina microcarpa Andrz. Small- 

 fruited False-flax. Fig. 2021. 



Camelina microcarpa Andrz. ; DC. Syst. 2 : 517. 1821. 

 Camelina sylvestris Wallr. Sched. Crit. 347. 1822. 



Stem pubescent, at least below, simple or with 

 few elongated branches. Leaves lanceolate, ses- 

 sile, auricled, or the lower narrowed at the base; 

 fruiting racemes much elongated, often i long or 

 more ; pedicels relatively somewhat shorter than 

 those of C. sativa; pod smaller, rather more 

 flattened, 2" -3" long, strongly margined. 



In waste places, Ontario to Rhode Island, Virginia, 

 British Columbia, Kansas and Arizona. Naturalized 

 or adventive from Europe. May-July. 



8. BURSA [Siegesb.] Weber in Wigg. Prim. Fl. Hoist. 47. 1780. 

 [CAPSELLA Medic. Pfl. Gatt. i : 85. 1792.] 



Annual or winter-annual erect herbs, pubescent with forked hairs; basal leaves tufted. 

 Flowers racemose, small, white. Silicles cuneate, obcordate or triangular, compressed at 

 right angles with the septum, the valves boat-shaped, keeled. Style short. Seeds numerous, 

 marginless; cotyledons accumbent. [Middle Latin, purse, from the shape of the pod.] 



About 4 species, natives of the northern hemisphere, the following typical. In addition to the 

 following, another occurs in the western parts of North America. 



