Melanthacearum America, Scptcntrionalis Revisio. 113 



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

 hnearibus, vix acutis ; racemo subsimplici ; bracteis lanceolatis 

 pediccllis brevioribus ; perianthii foliolis ovalibus obovatisve, 

 obtusis, glandula obcordata. instructis. 



Zigadenus chloranthus, Richards, app. Franld. journ. (ed. 2,) p. 12; 

 Torr. ! in ann. lye. New- York, 2. p.25l; Ram 8f Schult. syst. 7, p. 1561 ; 

 Hook. Af Am. ! hot. Beechey, p. 130. 



Z. glaucus, NutU! in jour. acad. Philad. 7, p. 56. 



Z. commutatus, Ram. Sf Schult. I. c. 



Melanthium glaueum, Null. ! gen. 1,^.232; Torr.fi. 1, p. 367. 



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



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

 plana, supremis bracteiformibus. Racemus (seu panicula subsimplex) 

 7 — 20-florus, interne srepius plus minus compositus ; pedicellis unciali- 

 bus apice incrassatis. Flores magnitudine Ornithogali umbellati (in- 

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

 leviter angustata; glandulis cohfluentibus. Styli demum recurvi. 

 Capsula conoidco-oblonga, pcrianthio persistente multolongior; carpellis 

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

 appendiculata. Julio ct AUgusto floret. 



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

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

 in planitiebus altis fluminis Platte et Multnomah lecta.) 



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

 (Helonias glaberrima, Bot. mag. t. 1G80,) et forsan Hook, et 

 Am. in bot. Beechey, 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 Zigadenus elbgans, Pursh, 

 jLl,p. 241. 



VOL. IV. 15 



