NYCTAGINACEAE (POUE-O'CLOCK FAMILY) 17i 



i. Mirabilis multiflora (Torr.) Gray, Bot. Mex. Bound. 173. 1859. Some 

 what pubesceat but not glandular, widely branched, 3-6 dm. high: leavei 

 broadly ovate or deltoid, 3-7 cm. long, mostly rounded at base, on petiole 

 much shorter than the blades: involucres usually 6-flowered: perianth tubular 

 funnelform, 3-5 cm. long, pale -ose to pm-ple, the ovate lobes shorter than th( 

 somewhat greenish tube: fruit 6-8 mm. long, obtuse, sUghtly ribbed below 

 Qimmoclidion multiflorum Torr. — Colorado to Texas and CaUfornia. 



2. MirabiUs oxybaphoides Gray, 1. c. Stems procumbent, diffuse, slender 

 leaves all deeply cordate, on rather long petioles, lowest reniform, upper onei 

 acimiinate, often subangled: involucre 3-flowereQ, deeply 5-cleft, very viscid 

 glandular as is also the peduncles in the loose panicle; lobes ovate, rathei 

 acute, a Uttle shorter than the campanulate perianth: stamens 3: fruit sub 

 globose-obovoid, glabrous, destitute of ribs or angles, blackish. (,Allioniell( 

 oxybaphoides Rydb.) — Colorado to Texas and California. 



2. ALLIONIA Loefl. 



Herbs, simple-stemmed or dichotomously branched, with opposite leave! 

 and flowers m terminal panicles. Involucres mostly 5-lobed, 3-5-flowered 

 becoiuing enlarged and reticulate-veined in fruit. Perianth campanulate 

 Stamens usually 3, sometimes 5. Fruit obovoid or clavate, strongly ribbed 

 pubescent in oiu- species. — Oxybdphus in part. 



Steias more or less hirsute from base to summit. 



Leaves also hirsute 1. A. hirsuta. 



Leaves glabrous or nearly so 2. A. pilosa. 



Steins glabrous below, more or less viscid-puberulent upward. 



Leaves ovate or cordate 3. A. nyctaginea. 



Leaves lanceolate to linear. 



Perianth-lobes 4, deeply bifid . 4. A. glaudulifera 



Perianth-lobes 4-5, entire (7). 



Branched from the base; the stems diffuse . • • .5, A., diffusa. 

 Mostly simple and erect. 



All the leaves linear • . , 6. A. linearis. 



Some of the leaves broadly lanceolate . . . . 7. A. lanceolataj 



1. Allionia hirsuta Pursh, FI. Am. Sept. 2: 728. 1814. Rather roughly 

 hirsute or pilose throughout, with jointed hairs, 2-5 dm. high: leaves frpm 

 broadly to narrowly lanceolate or oblong, sessile or the lowest: short-petioled, 

 inflorescence rather short: involucre pubescent: stamens 3 or 5: fruit narrowly 

 ovoid, with obtuse ribs, pubescent. Oxybaphus hirsutus. — Minnesota, west- 

 ward and southward to Colorado. 



la. Allionia hirsuta aggregata (Ortega) A. Nels. A reduced form with the 

 inv6lucres solitary in the axils of the upper leaves. See the analogous form? 

 2a and 6a below. ' (Ccdyxhymenia aggregata Ortega, Nov. or Rar. PI. 8: pi. U. 

 1798.) — ^Wyoming to the Dakotas. 



2. Allionia pilosa (Nutt.) Rydb. Bull. Torr. Bot. Club 29: 690. 1902. 

 Resembling the precedi&g, but the stem less hirsute, often glabrate except 

 below the nodes: leaves glabrate or finely hirsute, lanceolate or narrower, 

 narrowed but blunt at apex, sessile or nearly so: involucral lobes acute: calyx 

 white, 1 cm. broad: fruit obovoid, 5-ribbed and transversely rugose. — Same 

 range as the preceding and farther south. 



2o. AlUoma pilosa decumbens (Nutt.) A. Nels. Stems low, with decum- 

 bent base: leaves narrower and glabrate: the inflorescence reduced to invo- 

 lucres solitary in uppermost axils; :;Ca?3/me7iia decumbens Nutt. Gen. 1: 26. 

 1818. — The upper IVlissouri region and said to extend to Mexico. 



• 3. Allionia nyctaginea Michx. Fl. Bor. Am. i: 100. 1803. Stems somewhat 

 4-angled, nearly glabrous, 4-8 dm. high: leaves broadly ovate, acute with cor- 

 date or rounded base, 4-8 cm. long, petioled, glabrous or glabrate: inflores- 

 cence more or less pubescent: perianth red: stamens and style exserted: fruit 

 oblong, pubescent. Oxybaphus nyctaginea. [Allionia fpribunda (Choisy) 

 Kuntze, Rev. Gen. 553. 1891.]— New Mexico to Wyoming and far to the 

 eastward. 



