1257 



HOSACKIA* bicolor. 

 Two-coloured Hosackia. 



DIADELPHIA DECANDRIA. 



Nat. ord. LeguminosjE. § Lotece. 



HOSA CKIA.— Calyx campanulatus 5-fidus. Alx vexillum subsequantes 

 patentes. Carina rostrata. Stylus filiformis. Stigma capitatum. Legu- 



men cylindraceum, v. subcompressum, rectmxi, leeve. Herbee, toliis 



impare pinnatis, foliolis scepius alternis, stipulis membranaceis minutis aut 

 obsoletis. — Bentham MSS. 



H. bicolor; glabra, floribus umbellatis ebracteatis, foliis 7-9-foliolati3. 



Bentham MSS. 

 Hosackia bicolor. Douglas in herb. Hort. Soc. 

 Lotus pinnatus. Hooker in bot. mag. 2913. 



" The whole plant glabrous. Root soft and creeping. Stems ascending', 

 a foot and a half long, branching at the base, flexuose, terete, striate. 

 Leaves pinnate, with 2, 3, or 4 pair of leaflets, nearly opposite, with a 

 terminal one at a short distance from the -last pair ; leaflets nearly sessile, 

 oblong or obovate, obtuse or mucronate. Stipules small, membranaceous. 

 Peduncles axillary, about the length of the leaves. Flowers from 6 to 10, 

 in umbels, pendulous, on short pedicels, without any or with very small 

 membranaceous bractese at the base of the umbel. Calyx campanulate, 

 rather fleshy at the base, the rest slightly membranaceous, with 5 rather 

 unequal teeth, the two upper ones being less deeply cleft, and rather longer; 

 the two lateral teeth, and the inferior one, equal and linear. Petals on long 

 claws, that of the vexillum distant from the others. Vexillum yellow, ovate, 

 spreading, and thrown back on the calyx. Ala; white, spreading, oblong, 

 undulate on the margins. Carina yellow, rostrate, nearly as long as the alee. 

 Stamina diadelphous, the solitary one generally vv'ithout any anther. Style 

 incurved, filiform. Stigma capitate. Legume straight, or slightly incurved, 

 about two inches long." — Bentham. 



A pretty perennial plant, found by Mr. Douglas in overflowed meadows 



* Dedicated by Mr. Douglas to David Hosack, M.D., F.R.S., &c., of 

 New York, a gentleman to whom the scientific men of North America owe 

 the same gratitude as those of England did to Sir Joseph Banks. 



