70 svxbftsis' *(//* THE "FLORA OF COLORADO. 



root, with lateral decumbent branches, slightly pubescent ; leaves lan- 

 ceolate in outline, 6' long, interruptedly bipinnatitid, nearly smooth 

 above, closely canesceut-toraentose beneath, segments subovate, acute, 

 confluent on the wide rachis; sterile involucres about 5-6 toothed ; fertile 

 flowers few; fruit spiny. Near Denver, Greene. 



ZINNIA 1 GKRANDIFLORA, Xutt. Stems numerous, much-branched from 

 a w r oody base, 4'-5' high, somewhat hirsute; leaves opposite, linear, 

 connate, with scabrous margins, 1' long, 2"-3" wide ; scales of the in- 

 volucre rounded, closely imbricated; rays yellow, very large, orbicular- 

 oval, f wide; palere fiinbriate; acheuia of the disk with a single awn. 

 Canon City, Brandegee. Colorado Springs, Eedfield. 



HELIOPSIS L^SVIS, Pursh. Xear Canon City, Brandegee. 



EUDBECKIA LAOINIATA, L. Canon City, Brandegee. B. H. tfrnith. 

 Sierra Madre Bange, Coulter. 



EUDBECKIA HIRTA, L. On the Platte near Denver and Bear Creek, 

 Coulter. 



LEPACHYS COLUMNARLS, T. & G. Strigose-scabrous, branched from 

 the base, l-2 high ; radical leaves usually undivided, spatulate-lance- 

 olate, caulineones pinnately-parted, the upper sessile, segments linear- 

 lanceolate or oblong, rigid, mucrouulate, entire, rarely somewhat lobed; 

 disk columnar, longer than the 5-8 oblong or obovate-oval, recurved, 

 yellow rays; chaff with woolly tips. Disk 1' or more long. Abundant 

 on the plains around Denver and Colorado Springs. Hall d* Harbour, 

 266; Dr. Smith; Brandegee; Coulter. 



Var. TAOETES, Gr., PI. Wright, 1, p. 106. Kays deep reddish-browu. 

 Purgatory Eiver, Dr. Bell. Pueblo, Greene. 



HELIANTHTJS PETIOLARIS, Nutt. T. & G. FL N. Am. 2, p. 310. Stem 

 erect, l-3 high, strigose or hispid, branching; leaves scabrous, alter- 

 nate, the lower sometimes opposite, ovate-lanceolate or ovate, entire or 

 somewhat repand-toothed, 3-iierved, on ver3 r long, slender, scabrous 

 petioles; peduncles terminal, naked, bearing solitary (usually large) 

 heads; scales of the involucre lanceolate, acute or acuminate; disk- 

 flowers pubescent at base; achenia villous; pappus of two chaffy awns. 

 Heads very variable in size. Near Denver, Dr. &)n ith. Plai us near Colo- 

 rado Springs, Porter. Canon City, Jirandegee. Meehan. Along the 

 Platte, Coulter. Hall cfc Harbour, 270; Parry, 420. 



HELIANTHUS LENTICULARIS, Dongl. Annual, scabrous or hispid, 

 branching, stout, 3-8 high; leaves ovate, alternate, acuminate, coarsely- 

 serrate, 3'-6' long, 2 / -4 / broad, 3-uerved at the base and suddenly nar- 

 rowed into a petiole nearly as long as the leaf, uppermost often lanceo- 

 late and entire ; heads mostly panic-led, peduncled 2'-4' broad ; scales 

 of the involucre ovate, ciliate, abruptly and conspicuously acuminate, 

 in about 3 rows, spreading; rays 20-40, large; chaff of the flat recep- 

 tacle nearly as long as the purplish disk-flowers, concave, cariuate, 



1 ZINNIA, L. Heads immy-tkrwered ; the ray-flowers pistillate, those of the disk tubu- 

 lar, perfect. Involucre imbricate: the scnles roundish or oval, margined. Receptacle 

 conical or somewhat cylindrical, covered with oblong eouduplicate, chatty scales which 

 envelope the disk flowers. Rays obovate or oblong, coriaceous, reticulated, persistent, 

 continuous with the summit of the achenium, or rarely somewhat articulated. Lobes 

 of the corolla of the disk densely velvety-villous at the summit with colored hairs. 

 Branches of the style in the disk-flowers terminated by a hairy somewhat capitate 

 cone. Achenia nearly wingless; those of the ray somewhat 3-sided, mostly destitute 

 of pappus; of the disk, compressed or flat, 1-2 awued or toothed, rarely naked. Annual 

 (American) herbs, with opposite mostly sessile entire leaves. Heads solitary, termi- 

 nating the branches, showv, persistent. * Rays purple, orange, scarlet, or <>Teenish-\vhite. 

 T. f G. FL X. Am. 



