Par? 3, 1918] ALLIONIACEAE 237 
broadly oval in outline, 5~6 mm. long, smooth, dark-olive or brown, usually with 10 lighter 
vertical lines. 
Tyrz Locatiry: In Owen’s Valley in the extreme southern part of Mono County, California, 
near the Southern Belle Mine. 
Disrrisution: In dry, chiefly sandy soil, southwestern Utah and western Arizona, and in south- 
eastern California, from Inyo County to San Diego County. 
24. MIRABILIS L. Sp. Pl. 177. 1753. 
Jalapa (Tourn.) Mill. Gard. Dict. Abr. ed. 4. 1754. 
Nyctago Juss. Gen. P1. 90. 1789. 
Trimista Raf. Aut. Bot. 12. 1840. 
Admirabilis (Clusius) Nieuwl. Am. Midl. Nat. 3: 280. 1914. 
Perennial herbs, more or less pubescent, with dichotomous stems and tuberous roots. 
Leaves opposite, petiolate or sessile, the blades broad, entire. Inflorescence axillary or of 
terminal, dense or open cymes; involucre i-flowered, campanulate, calyx-like, 5-lobed, the 
lobes erect, imbricate, only slightly accrescent in age; perianth corolla-like, colored, tubular 
or tubular-funnelform, the tube slender, elongate, constricted above the ovary, the limb 5-lobed, 
induplicate-plicate, often not broader than the tube. Stamens 3 or 5; filaments unequal, 
exserted, capillary, incurved, connate at the base into a short cup; anthers didymous. Ovary 
ellipsoid or obovoid; style filiform, exserted; stigma capitate, papillose. Anthocarp coriaceous, 
angled or costate, more or less constricted at both erds, often tuberculate or rugulose, glabrous 
or pubescent. Seed with the testa adherent to the pericarp; embryo uncinate, enclosing the 
farinaceous endosperm; radicle elongate, descending. 
Type species, Mirabilis Jalapa L,. 
Perianth tubular, the limb scarcely if at all broader than the tube. 
Stamens 3; fruit puberulent. 1. M. Watsoniana. 
Stamens 5; fruit glabrous. 
Perianth 4-5 cm. long, not conspicuously dilated below; plants very 
viscid; fruit obscurely angled. 2. M. exserta, 
Perianth 2.5—3 cm. long, conspicuously dilated below; plants only slightly 
viscid; fruit sharply angled. 3. M. Pringlei. 
Perianth expanded into a broad limb much wider than the tube. 
Perianth 2~2.2 cm. long, gradually dilated from the base to the mouth, 
purplish-red. 4, M. Urbani. 
Perianth 3-17 em. long, abruptly dilated into the limb. 
Perianth 3-5.5 cm. long, normally purplish-red. 5 M. Jalapa. 
Perianth 7-17 cm. long, white tinged with pink or purple. 
Plants short-villous and very viscid, at least about the inflorescence; : 
leaf-blades short-petiolate, the upper ones subsessile. 6. M. longiflora. 
Plants puberulent, slightly or not at all viscid; leaf-blades, even oan 
the uppermost, conspicuously petiolate. 7. M. Wrightiana. 
1. Mirabilis Watsoniana Heimerl, Bot. Jahrb. 11: 84. 1889. 
Plants erect, much branched, densely leafy, the branches puberulent above, glabrate 
below; lower leaves long-petiolate, the uppermost subsessile, the blades ovate-deltoid, cordate 
or truneate at the base and short-decurrent, acute or acuminate at the apex, thin, green, 
glabrous, ciliate: peduncles slender, short-villous, cymosely glomerate at the ends of the 
branches, tubular-campanulate, unequally 5-lobed, short-villous, slightly accrescent in age; 
perianth tubular, short-villous below, gradually dilated upward, the limb scarcely broader 
than the tube, 5-lobed; stamens 5, subequal, long-exserted; fruit small, obovoid-pyramidal, 
dark-brown, constricted at both ends, 5-angled, the angles subtuberculate, the sides smooth, 
puberulent, slightly viscid when moistened. 
Typx LocaLrry: Cuesta de Solol4, Guatemala. 
DistRIBUTION: Known only from the type locality. 
ILLUSTRATION: Bot. Jahrb. 11: pl. 2, f. Za-2h. 
2. Mirabilis exserta Brand. Proc. Calif. Acad. II. 3: 165. 1891. 
Plants erect, 4-6 dm. high, much branched, the branches slender, densely viscid-puberu- 
lent, or glabrate below; petioles slender, 1~-2.5 cm. long; leaf-blades rhombic-orbicular, ovate- 
orbicular, broadly ovate-deltoid, or oval-ovate, 6-11 cm. long, 4-10.5 cm. wide, subcordate 
