Part 3, 1918] ALLIONIACEAE 231 
very unequal, usually longer than the tube; perianth 7-10 mm. long, sparsely pilose or 
glabrate, the limb 6-8 mm. broad; fruit ellipsoid or subglobose, 2.5~3 mm. !ong, olivaceous, 
marked with small elongate black spots or slightly elevated transverse ridges. 
TYPE LOCALITY: East of El Paso, Texas. 
DISTRIBUTION: Dry stony or brushy hillsides, southern Colorado and Utah to Arizona and 
western Texas. 
22. QUAMOCLIDION Choisy, in DC. Prodr. 137: 429. 1849. 
Perennial herbs, with repeatedly dichotomous stems, glabrous or glandular-pubescent, 
the branches swollen at the nodes. Leaves opposite, petiolate, the blades broad, succulent, 
entire. Flowers involucrate; involucre 3—8-flowered, campanulate, 4-5-lobed, calyx-like, 
green or colored, slightly accrescent in age, the lobes erect, imbricate; perianth funnelform or 
nearly tubular, corolla-like, purplish or deep-red, the tube slender or stout, constricted above 
the ovary, the limb 5-lobed, induplicate-plicate. Stamens 5, unequal; filaments capillary, 
incurved, connate at the base into a short fleshy cup; anthers didymous. Ovary ellipsoid; 
style filiform, exserted; stigma capitate, papillose. Anthocarp coriaceous, oblong or obovoid 
to ellipsoid, smooth or obscurely 5-angulate and rugulose, glabrous or puberulent. Seed with 
the testa adherent to the pericarp; embryo uncinate, the cotyledons enclosing the copious 
farinaceous endosperm; radicle elongate, descending. 
Type species, Mirabilis triflora Benth. 
Perianth 2-—2.5 cm. long, the limb scarcely broader than the tube; involucre 
3-flowered; stamens long-exserted. 1. Q. triflorum. 
Perianth 4-6 cm. long, the limb much broader than the tube; involucre with 
more than 3 flowers; stamens only slightly if at all exserted. 
Fruit angulate, slightly tuberculate; plants glabrous throughout, or obscurely 
puberulent on the young peduncles. 2. Q. Greene. 
Fruit terete, smooth; plants copiously pubescent, at least on the stems. 
Perianth glandular-villous outside; fruit olive and brown, with 10 light- 
colored vertical lines. 3. Q. Froebelii. 
Perianth glabrous or sparsely puberulent; fruit dark-brown to black. 4. Q. multiflorum. 
1. Quamoclidion triflorum (Benth.) Standley, Contr. U. S. Nat. 
Herb. 12: 358. 1909. 
Mirabilis triflora Benth. Pl. Hartw. 23. 1839. 
Quamoclidion nyctagineum Choisy, in DC. Prodr. 13?: 429. 1849. 
Plants erect or decumbent, much branched, the branches slender or stout, densely viscid- 
puberulent; petioles slender, 6-30 mm. long; leaf-blades broadly cordate-ovate, or the upper- 
most narrowly cordate-ovate, 2.5~7.5 em. long, 2.5-5.5 cm. wide, cordate at the base, acute 
to attenuate at the apex, usually abruptly so, thin, bright-green, viscid-puberulent when 
young, glabrate in age, the leaves of the inflorescence much reduced, bractlike; peduncles 
axillary or glomerate at the ends of the branches, 2~12 mm. long; involucre 4-lobed, 3-flowered, 
broadly campanulate, 8-12 mm. long, densely viscid-puberulent with short hairs, the lobes 
unequal, longer than the tube, broadly ovate, abruptly or gradually acute or attenuate; 
perianth deep-red, tubular, 2-2.5 cm. long, 4 mm. in diameter, densely viscid-puberulent, the 
limb not broader than the tube, shallowly and obtusely lobed; filaments exserted 7-12 mm.; 
fruit eliptic-oblong in outline, 5 mm. long, nearly black, rugtilose. 
Tvpx Locality: Bolafios, Jalisco. 
DISTRIBUTION: Cape Region of Lower California, and Jalisco. 
ILLUSTRATION: KE. & P. Nat. Pfl. 31: f. 7, A. 
2. Quamoclidion Greenei (S. Wats.) Standley, Contr. U. S. Nat. 
Herb. 12: 358. 1909. 
Mirabilis Greenei S. Wats. Proc. Am. Acad, 12: 253. 1876. 
Plants erect or ascending, 4-6 dm. high, sparsely branched, glabrous throughout or 
sparsely and obscurely puberulent on the young peduncles, the branches stout, grayish-green; 
petioles stout, 0.4-3 cm. long; leaf-blades rhombic-orbicular, orbicular-ovate, or oblong-ovate, 
4.5-7.5 cm. long, 2.5-6.5 em. wide, broadly rounded to obtuse at the base and usually short- 
