185 



186 



HEL1ANTHUS PARISHII A. Gray. 



Sts slender, --5 m hi, simple or 

 branched above; % lvs elongated-lanceo- 

 late, softly cinereous-puberulent or 

 canescent beneath, scabrous above; 

 hds 10-15 mm hi; rays 20-35 mm long; 

 inv bracts linear-subulate, longer than 

 the disk, villous ring or 2 tufts above 

 the short proper tube; paleae of the 

 pappus slender-subulate. 



Abrams, Fl LA 415. Oak Knoll 

 (Grant). 



Hall, U 128. Parish sunflower. 

 SBer (Parish 1025). 



Genus ENCEL.IA Adanson. 



Herbs or low shrubs with alt or opp 

 Ivs, and usually with large peduncled 

 hds of both ray and disk fls, the rays 

 neutral y, the disk y or brownish, per- 

 fect; receptacle flat, convex or conic, 

 chaffy; chaff usually soft r and mainly 

 scarious: ak flattened, thin-edged, 

 often villous: pappus or an awn or 

 its rudiment to each margin of the 

 wingless ak. 

 ENCELIA CALIFORNICA Nutt. 



Woody at base, branched above, 6-12 

 dm hi, strong-scented, minutely pub- 

 escent: Ivs ovate to oblong-lanceolate, 

 rarely denticulate or toothed, about 5 

 cm long, g and glabrate: hds common- 

 ly solitary, disk about 2 cm broad, 

 brownish or purplish: inv w-villous: 

 lays 16-20, 2.5 cm long or more, gold- 

 en-y; ak obovate with very shallow 

 notch and no pappus, the margins very 

 long villous. 



Abrams, Fl LA 415. 

 SBar: Da 8; SD! Baja! 



Genus 1I1DEXS Linnaeus. 



An or per herbs with opp serrate or 

 usually lobed or dissected Ivs, or the 

 upper mostly alt, and usually rather 

 large hds of both tubular and radiate 

 fis or rays 0. Tnvolucral bracts in 2 sr, 

 distinct or somewhat united at toase, 

 the outer often foliaceous and much 

 longer than the inner: receptacle flat 

 or nearly so. chaffy, the chaff subtend- 

 ing the disk-fls: rays when present 

 neutral, usually y: disk fls perfect: ak 

 flat, quadrangular or nearly terete: 

 pappus of 2-6 teeth or subulate awns, 

 barbel or hispid. 

 BIDENS PILOSA Linn. 



Ann: sts erect, usually branched 

 from the base, 4-6 dm hi. glabrous or 

 sparsely pilose-pubescent; Ivs pinnate, 

 pilose-pubescent Iflts 3-5, irregularly 

 serrate or incised, 15-25 mm long; hds 

 scattered, few, 10-12 mm broad; rays 

 0; ak narrow, linear, about 1 cm long. 



Frequent along streets and irrigat- 

 ing ditches. Native of tropical Am. 



Abrams, Fl LA 418. 



Parish 8o e 1:59. 



Davidson, Erythea 1:60 LA Co. 



Genus LEPTOSYNE De Candolle. 



Glabrous ann or per herbs or rarely 

 shrubby, with dissected Ivs, and usu- 

 ally scapiform erect peduncles, bear- 

 ing rather large heads of y fls: inv 



bracts in 2 series, the outer of narrow 

 foliaceous spreading bracts, the inner 

 of broad membranous erect ones: rays 

 broad, pistillate and oftjen fertile, 

 sometimes neutral: chaff of receptacle 

 linear, thin, scarious, decid with the 

 fr: ak flat or somewhat concavo-con- 

 vex, margined: pappus* a minute cal- 

 lous cup or a pair of paleae. 

 LEPTOSYNE DOUGLASII DC. 



An, 3 dm hi: Ivs mostly basal. 2-3- 

 parted into filiform divisions: rays 

 10-15 cm long: the ring of disk-cor 

 distinctly bearded: sparsely beset with 

 capitate rigid bristles, the margin be- 

 coming corky: cup-like ring in place 

 of pappus entire. 



Abrams, Fl LA 417. 

 SD Co! Baja! &Ber; Monterey; Arizona. 

 Genus PLUCHEA Cass. 



Herbs or shrubs with alt Ivs and sm 

 hds of tubular fls in terminal cymose 

 clusters: involucral bracts imbricated 

 in several sr, appressed, herbaceous; 

 receptacle lat, outer fls of hd pistillate 

 their cor filiform, 3-cleft or dentate: 

 central fls perfect, but mostly sterile, 

 their cor 5-cleft; ak sm, 4-5-angled or 

 sulcate; pappus a sr of capillary sca- 

 brous bristles. 



PLUCHEA BOREALIS A. Gray. 

 Tessaria borealis T-G, Emory R 143. 

 Texas SD; Baja! "Cachimilla." 



See Pluchea serlcea. 

 PLUCHEA CA*MPHORATA DC. 



An, stoutish, minutely and somewhat 

 viscid-pubescent, leafy, 6 dm hi; Ivs ob- 

 long-ovate to oblong-lanceolate, acute 

 at both ends, toothed or denticulate, 

 the larger 7-12 cm long, petioled; hds 

 short-pedicelled, dull p, crowded in a 

 corymbose cluster; bracts ovate to lan- 

 ceolate, often colored. 



DC, Prodr 5:452 (1836). 



Type locality: "in Virginia." 



Mass Fla; Texas Cal; Quintin! 



McClatchie, Erythea 2:125, Cat. 



Abrams, Fl LA 407. 



Erigeron camphorata L, sp PI ed 2, 

 2:1212 (1762). 

 PLUCHEA SERICEA Coville. 



Shrub 4 m hi or less, with suberect 

 slender willowy branches, very leafy 

 up to the cymose clusters of rather sm 

 hds; Ivs silky-pubescent, 2.5-5 cm long, 

 linear-lanceolate, acute at both ends, 

 entire; involucre campanulate; outer 

 bracts ovate, obtuse, tomentose; inner 

 ones narrowly linear, deciduous; fls 

 w'ish, tinged with p or red; pappus 

 copious, the bristles of the sterile fls 

 clavellate-dilated, of the fertile slender- 



Abrams, Fl LA 407, Arrowwood. 



Pluchea borealis A. Gray. 



Brandegee. Zoe 1:114. Cat. 



Coville/ CXH 4:128. Death Valley; 

 Utah: etc. 



Polypappus sericeus iNUttall, PI 

 Gamb 1*8 (1848). 



Type locality: "Rocky mts of upper 

 California." 



Tessaria borealis Torrey, Emory R 

 142 (1848); Gray, PI Fendl 75 (1849), 





