CLASS XVII. ORDER IV. 285 



This plant likewise produces horizontal, radical shoots with 

 small greenish flowers like those in P. rubella, which sec. — 

 Woods, Brookline, rare. — May. — Perennial. 



DECANDRIA. 



308. GENISTA. 



Genista tinctoria. L. Wood Waxen. Dyer's Weed. 



Leaves lanceolate, smooth ; branches round, stri- 

 ate, erect, unarmed. Sm. 



Root woody, tough, creeping extensively. Stems or branches 

 numerous, erect or ascending, round furrowed, smooth. Leaves 

 alternate, sessile, lanceolate, acute. Flowers on the upper part 

 of the branches, axillary, solitary, nearly sessile, bright yellow. 

 This plant has overrun the hills on the south side of Salem, so 

 as to give them, in the month of July, an uniformly yellow ap- 

 pearance at a distance. It was probably imported originally 

 from Europe. The whole plant is said to dye a fine yellow 

 color. 



309. LUPINUS. 



LuPiNus PERENNis. L. Common Lupine. 



Calyxes alternate without appendages, upper lip 

 emarginate, lower entire. L. 



This elegant flower grows wild very plentifully in the woods 

 at Watertown. Stems erect, somewhat hairy. Leaves digi- 

 tate, consisting of about eight or ten lanceolate-wedge shaped 

 leaves, arranged like rays around the end of the petiole. They 

 are somewhat hairy and pale underneath. Flowers blue, in a 

 terminal spike or raceme. — Perennial. 



310. CROTALARIA. 

 Crotalaria sagittalis. L. Rattle Pod. 



Hairy, erect, branching ; leaves simple, lanceolate ; 

 stipules opposite, acuminate, decttrrent; racemes op- 

 posite to leaves, about three flowered; corollas smaller 

 than the calyx. 



