48 SYNOPSIS OF THE FLORA OF COLORADO. 



tals often sparingly denticulate at the apex, lanceolate or linear-Ian cool ate, 

 acute 5 stigmas 5, spreading; berry subglobose, shorter than the tuber- 

 cles, red ; seeds globose, serobiculate, black. Golden City, Greene. 



MAMILLARIA VIVIPARA, Haw. Eng. Syn. /. c., p. 13. Simple, oval, the 

 almost terete tubercles bearing fascicles of 5-8 reddish-brown spines, sur- 

 rounded by 15-20 grayish oues in a single series ; all straight and very 

 rigid 5 the latter 5 // -8' / long; the former even 10" long ; flowers purple, 

 often 2' or more in diameter, with numerous lance-subulate petals and 

 fringed sepals; berry oval, green; seed pitted, light-brown. Foot-hills 

 near Long's Peak, Coulter. Redfield. 



ECHINOCACTUS l SIMPSON!.- Eng. Simple, globose or depressed, with 

 ovate tubercles like a ILainillaria, bearing 20 outer ash-colored spines 

 and 5-10 stouter, darker, inner ones, all straight and rigid ; flowers from 

 the top of the just developing tubercles, small, 9"-12" broad, yellowish- 

 green to purplish ; scales on the ovary very few ; berry small, dry, with 

 few black, tuberculated seeds. Near Canon City, Brandegee ; Greene. 



CEREUS 2 VIRIDIFLORUS, Eng. Syn. 1. c. p. 22. Ovate or at length 

 cylindrical, simple or sparingly branched, l'-2' high ; ribs about 13 ; are- 

 olae ovate-lanceolate ; spines strictly radiating, 12-18, with 2-(> superior, 

 setaceous ones, the rest lateral, longer, the lower frequently purplish- 

 brown, the others white; central one often wanting, when present, stouter, 

 solitary, variegated; flowers lateral towards the apex, yellow, becoming 

 green ; berries elliptical, small ; seeds tuberculated. Canon City, Bran- 

 degee ; Coulter. 



CEREUS FENDLERI, Eng. Syn. I. c. p. 25. Stems 3' -8' high, not 

 many from the same base, ovate-cylindrical ; ribs 9-12; areoLe rather 

 crowded ; spines very variable, always bulbous at base, radial ones 7-10, 

 straight or curved, 6"-12" long, white and brown, lower ones stronger, 

 central one stout, curved above, dark-brown, often elongated, l'-2' long ; 

 the flowers lateral below the top, large, 2 / -3 / in diameter, of a deep pur- 

 ple color, diurnal; berry I'-IJ 7 long, edible; seed oblique, deeply and 

 irregularly pitted by the confluence of many of the tubercles. Canon 

 City, Brandegee; Greene. 



CEREUS GON ACANTHUS, Eng. & Big. Pac. R. R., 4, p. 33. Ovate, 

 simple or sparingly branched from the base, 7-ribbed; areolje large, 

 orbicular, distant; spines robust, angled, straight or variously curved ; 

 radial ones 8, yellowish, often blackish at base and apex, 8 // -15 // long, 

 the upper one much larger than the others, 1J'-2J' long, nearly equaling 

 the central one, w.hich is remarkably stout, angular, and chaneled ; flow- 

 ers scarlet, open day and night. Caiion City, Brandegee. Pueblo, Greene. 



J ECHIXOCACTUS, Link & Otto. Sepals and petals united beyond the sepal-bearing 

 ovary into a short tube. Berry globose or oval, juicy or dry, covered with scales and 

 sometimes with wool. Seeds brown or black ; embryo usually curved over a small al- 

 bumen ; cotyledons short, foliaceous, parallel to the sides of tlie seed. Globose or oval, 

 mostly simple, generally many ribbed with bunches of spines on the ribs, rarely tu- 

 berculated; flowers near the top, just above and close 'to the spines of the same season, 

 usually large, as wide as long, open only in sunshine. 



2 CEREUS, Haw. Sepals and petals united above the sepal-bearing ovary into a short, 

 or, usually, long tube. Berry juicy, globose or oval, beset with scales (sometimes rather 

 indistinct) or spines. Seeds brown or black ; embryo straight or usually curved, with- 

 out albumen ; cotyledons short or foliaceous, commonly contrary to the sides of the 

 seed. Globose or oval, or mostly cylindric or columnar, few or many ribbed, usually 

 branched, bearing bunches of spines on the ribs ; flowers lateral, just above and close 

 to the spines of previous seasons, usually large, fully open in sunlight or at night, or 

 rarely, permanently. 



The above species belong to ^Eclilnoccrens, Eng. Heads commonly many, low, oval 

 or cylindric ; flowers short, mostly as wide as long; ovary covered with bunches of 

 spines ; stigmas green ; seeds small, tuberculated ; cotyledons short, straight. 



