341 



# 



f 





Hadix perennis, subfusiformis, crassa^ lignosa, hie illic fibris 

 ramosis instructa. Caulis erectus, simplex, spithama^us 

 acl pedalem et ultra, teres, glaber, foliosus. Folia omnia 

 lanceolata, glabra, basi apiceque attenuata ; caulina 

 sessilia, integerrima; radicalia longe petiolata, subserrata. 

 Racemus (vel spied) terminalis, elongatus, simplex, multi- 

 florus. Mores fere omnino sessiles, albi. Petala calyce 

 subduplo longiora, linearia, apice dilatata, venosa. Anr 

 therm oblongae, siccitate curvatse. Germen lineari-ob- 

 longum, teres, sublonge pedicellatum, pedicello hirsute. 

 Stigma fere sessile, parvum, capitatum. SUiqu<2 pendulae, 

 lineari-ensiformes, duas uncias longa^, duas lineas lata?, 

 stipite gracili duas tres lineas longo suffulta. Valva 

 planoe, membranaceae, subtorulosae. Semina, singulo 

 loculo 6-8, transversim Inserta, vel apice ad basin siliquae 

 versa, orbiculari-compressa, fusca, (vix matura} submar- 

 . ginata, (matura) immarsinata. Embryo flavus. 



It is singular that Sprengel should have placed this plant 

 in the genus Arabis, notwithstanding that its habit is widely 

 different, and that it has been so admirably defined as to 

 genus by Mr. Brown. 



Tab.. LXVII. Fig. 1, Flower. Fiff. 2, Petal. Fig. 3, 

 . Pistil. Fig. 4, Stamen. Fig. 5, Fruit. Fig. 6, Siliqua 

 with the valves separating. Fig. 7, Seed. Fig. 8, Sec- 

 tion of do. Fig. 9, Embryo :— all but Jig. 5, magnified. 



2. Macropodium laciniatum ; foliis omnibus petiolatis lacini- 



t 



ato-pinnatifidis, floribus pedicellatis, petalis angustis line- 



M, 



aribus. (Tab. LXVIII 

 laciniatum. HooL Fl, 



Hab. In rupibus siccis apud « Wallawallah," et « Priest's 

 Rapid," fluminis « Columbia," Americse septentrionalis. D. 



I^ougl 



as. 



^adix annua. Caulis erectus, herbaceus, teres, valde ramo- 

 sus, ut et tota planta, glaberrimus, duas ad quinque pedes 

 altus, foliosus. Folia omnia petiolata, circumscriptlone 

 lanceolata, vel ovato-lanceolata, profunda pinnatifida. 



