Psoralea.] LEGUMlNOSiE. ] 35 



obovatis subtus glaucis, stipulis obsoletis deciduis, pedunculis 1-floris, bractea sub flore 

 saepissime 3-foliolata. — BentL in Bot Reg. sub t 1257. 



Badix annua, parva. Caules spitharaaei, erecti. Stipule cito deciduie. Pedunculi 2 lineas longi, solitarii, 

 supenie unibracteati, uniflori, bracteis plerumque 2-3-foliolatis, flore minute flavo. AI(b vix diverffentes. 

 Stigma capitatum. Fructum non vidi. 



Hab. California. MeTizies, (in Herb, nostr.) common on soils where wood has been destroyed by fire, 

 on the shores of the Columbia. Dottglas. 



4. H, unifoliolata ; decumbens, hirsuta, valde divaricato-ramosa, foliis unifoiiolatis 

 rarissime 2-3-foliolatis subsessilibus, foliolis ovulibus basi apiceque acutis, stipulis 

 obsoletis, pedunculo unifloro, bractea sub flore ovata monophylla. 



Hadix annua, inferne fibrosa. Caules decumbentes, valde ramosi, subhirsuti, ramis divaricatis, flcxuosis. 

 Folia fere omnino sesailia, unifoliolata, petiolo articuLita, raris^me 2-3-foliolata, foliolis semiuucium louyis, 

 oralibus, subobliquis, basi apiceque acutis, pilosis. StipulcB minutissimx, acuta;, cito dcciduse. Pedunculi 

 breves, 2-3 lineas longi, hirsuti, axillares, solitarii, uniflori, sub calyce bractea ovata (folio simillima sed 

 minore) suffulti. Flos minutus, cemuus. Cali/x hirsutus, tubo obconico, dcntibus subulatis corolla vix 

 brevioribus. Corolla flava. Vexillum obovatum. AIcb oblongae, recfce, subundulatae. Stamina diadelpha, 

 9-1. Germen lineare, g^labrum : Stylus germine brevior, sursum curvatus : Stigma capitatum. Legumina 

 lineari-cylindracea, basi calyce clncta, unciam long^a, basi styli terminata, fusca, sub lente pallide punctata, 

 margine superiore pnecipue incrassata, unilocularia, loculo isthmis transversalibus spongiosis complctis 

 interrupto. Semina ^G, reniformia, laevia, fusca. 



i 



Hab. Shores of the Columbia. Dr. Scouler. — In size and shape of the leaflets^ and in hairiness, this 

 species approaches to the H. decumbens of Mr. Bentham ; in its flowers^ to H. parviflora ; and, in the bractea, 

 calyx, and seed-vessel, to H. Purshiana, Beuth.; in its almost universally solitary leaflets, and in its 

 branched and divaricated stems, it is very unlike any other, 



9. PSORALEA. Linn. 



Sep. 5, ad medium concreta in calycem 5-fidum persistentem, tubo saepius glanduloso, 

 lobis acuminatis infimo paulo productiore. Stam* 10, ssepius diadelpha, decimo interdum 

 basi cum cseteris connexo, Legumen calycis longitudine, evalve, l-spermum, interdum 

 in rostrum desinens. — Frutices aut Herbae tuherculis glandulosis scepius verrucosa. Folia 

 varia, stipulis petiolo basi adnatis. Flores dispositione varii, ccBruki albidi-purpuras- 

 centisve. DC. 



1. P. lanceolata; subglabra, ramis erectis, foliis S-foliolatis, foliolis sessilibus lineari- 

 lanceolatis superne latioribus mucronatis, racemis axillaribus capitatis, pedunculis folio 

 plerumque brevioribus, stipulis linearibus, bracteis ovato-lanceolatis pedicello longiori- 

 bus, calycis dentibus subsequalibus brevibus acutis, leguminibus globosis hirsutis- (Tab. 

 LI.) — Pursh, FL Am. v. 2. p. 475. — P. elliptica. Pursh, Fl. Am. v. 2. Suppl p. 74-1, (fide 

 ]s[utt) — P. arenaria. Nutt. Gen. v. 2. p. 103. De Cand. Prodr. v. 2. p. 219. 



Radix perennis, subfusiformis, descendens. Caules herbacei, glabri, superne appressim paululum hirsuti, 

 striati, (rlandulosi, basi decumbentes dein erecti, subvirg^ti, pedales et ultra, ramosi; rami altomi, erecti. 

 J^oftapetiolata, 3-foliolata; foliolis glabris rarius subpilosis, lineari-lanceolatis supems diUtatis, mucronatis, 

 inteo-errimis, nunc obovato-cuneatis basi attenuatis, subcarnosis, avenib, omuibua seavilibus sesquiuuciam ad 

 duas uncias lontns, utrinque gbndulis fuscis obsitis. Petioli foliis lon^tudine. StipultB lineares, libera?, non 

 cum petiolo adnata. Pedunculi axillares, solitarii, petiolo longiores, folio plerumque breviores. jRacemm 

 brevis, capitatus, &-10-floru3. Bractece ovato-lanceolatse, glandulosse, pedicello longiores, post florescentiam 



