/ 



Mclanthaccarum America Scptentrionalis Revisio. 113 



2. Z. glaucus ; bulbo tunicate ; foliis caule brevioribus, 

 linearibus, vix acutis ; racemo subsimplici ; bracteis lanceolatis 

 pedicellis brevioribus ; perianthii foliolis ovalibus obovatisve, 

 obtusis, glandula obcordata instructis. 



Zigadenuschlorantbus, Richards. app. Frankl. journ. (cd. 2,) p. 12; 

 Torr. ! in aim. lye. Nt w- York, 2. p. 251 ; RamSfSchult. syst. 7, p. 1561 ; 

 Hook. SfArn.! hot. Beechey, p. 130. 



Z. glaucus, Nttit..' in jour. acad. Philad. l,p. 56. 



Z. commutatus, Ram. 8f Schult. I. c. 



Melanthium glaucum, Nutt. ! gen. 1,^.232; Torr.jl. 1, p. 367. 



Leimanthium ? glaucum, Ram. Sf Schult. I. c.p. 1551. 



Caulis pedalis, superne subnudus (1 — 2-foliatus). Folia gtauca, 

 plana, supremis bracteiformibus. Raccmus (seu panicula subsimplex) 

 7 — 20-florus, inferne sajpius plus minus compositus ; pedicellis unciali- 

 bus apice incrassatis. Flores magnitudine Ornithogali wnbellali (in- 

 lerdum polygami ex Richards). Perianthii foliola obscure striata, basi 

 leviter angustata; glandulis confluentibus. Styli dennim recurvi. 

 Capsula conoidco-oblonga, perianthio persistenle multo longior ; carpellis 

 apice divergentibus, stylis brevibus subulatis, 7 — 8-spermis; Semina ex- 

 appendiculata. Julio et Augusto floret. 



Hab. Ad ripas arenosas, etc., a Canada! et freto Kotze- 

 buano ! usque ad Arkansam ! et Oregon ! (v. sjp. in herb. Nutt. 

 in planitiebus altis fluminis Platte et Multnomah lecta.) 



Obs. An hue pertinet Zigadenus commutatus, Schult. I. c. 

 (Helonias glaberrima, Bot. mag. t. 1680,) et forsan Hook, et 

 Am. in bot. Bcechaj, p. 160 ? 



Vidi in herb. Acad. Sci. Nat. Philadelphia? specimen Ca- 

 nadense (prope Maitland a McNab lectum), panicula pedali, 

 ramis subsimplicibus fere 12-floris ! 



Species omnino ignota est Zio A.DENU8 elegans, Pursh, 

 fi. l,p. 241. 



VOL. IV. 1 5 



