72 COMPOSITE. 



Subtribe IV. Helenie^. (Baeriece & Euhekniece, Bentb. & Hook., excl. gen.) In- 

 volucre hardly at all imbricated ; its bracts when broad nearly ei^ual or in a single 

 series. Ligules not persistent. Di.sk-fiowers numerous except in Schkuhria, with 5 

 or rarel}' 4 teeth or lobes. Akeiies few-nerved or angled, or more numerously striate- 

 angled only when turbinate or i^yriform. No oil-glands. (^Raillarddla, 190, might 

 be sought here.) 



* Anomalous: akenes (as iu Peritijlece) ■flat-compressed, with no lateral nerves, the callous 

 or nerved margins densely ciliate-friuged : rays fertile or none : disk-corolla with dilated 

 liml) : style-tiiis truncate-capitate, with or without a slight cusp. 



137. EATONELLA. Involucre of 5 to 8 oval or oblong obtuse and distinct bracts. Recep- 

 tacle hardly convex. Disk-coi'oUas short. Akenes callous-margined, ciliate with dense very 

 long villosity, outermost obcompressed. Aspect of Erioplnillum. 



137-1. CROCKERIA. Involucre and otlier characters of Lasthenia § Holvgumne. Akenes 

 obovate-oval, very densely fringed with clavate glaudular hairs. — See p. 445. 



* * Baeria type : receptacle conical, mostly high-conical and acute, beset after the akenes 

 have fallen by projecting points (as if pedicels, on which they were inserted) :" bracts of 

 the involucre herbaceous, in one or rarely two series and commonly broad, sometimes 

 cupulate-connate : female flowers ligulate, or sometimes wanting : akenes luivrow and 

 from oblong (or in one Monolopiu somewhat obovate) to linear, usunlly tapering to the 

 base, few-nerved and angled or nerveless, not callous-margined : herbage not impre.ssed- 

 punctate nor resiuous-atomiferous. 



H— Involucre (almost always) gamophyllous and sini])le, hemispherical or campanulate : 

 disk-eorollas with rather slender tube and dihited throat or linil) : autlier-tips ovate or 

 oblong : style-tips capitate-truncate or obtuse. 

 143. ERIOPHYLLUM. Akenes slender, and usually witli a paleaceous pappus. 



138. MONOLOPIA. Head conspicuously radiate, with broad ligules: inner disk-flowers 

 often infertile. Keceptacle high-conical. Involucre broad, of one or rarely two series of 

 bracts, which are normally connate liy tlieir edges into a several-toothed or lobed hemispheri- 

 cal cup, but sometimes distinct even to the base. Lobes of disk-corollas somewhat bearded. 

 Akenes obovate or obovate-oblong, quadrangular-compressed or the outer obcompressed- 

 triangular, sonjetimes acute-margined, with small terminal areola, and no pappus. Tloccose- 

 tomentose and alternate-leaved animals. 



139. LASTHENIA. Head radiate, or discoid l)y diminutiou of the ligules: disk-flnwers 

 all fertile. Involucre a single series of bracts connate by their edges into a 5-15-tootlied 

 glabrous green cup. Disk-corollas 4-5-lobed. Akenes linear or narrowly oblong, com- 

 pressed, slightly 2-3-nerved or nerveless, nearly marginless, scabro-jniberulent or glabrous. 

 Pappus of 5 to 10 firm and subulate-tipped palete, or none. Glabrous and smooth annuals, 

 with opposite entire sessile leaves 



-1^ -i— Involucre of few or sevei'al distinct and thinnish herbaceous bracts in a single series, 

 loose, open at maturity of fruit, not rarely deciduous: disk-corollas with .slender tube 

 Avhich equals or exceeds iu length the campanulate or cyathiform 5-h)bed (rarely 4-lobed) 

 limb : leaves all opposite, sometimes connate at their sessile bases. 



140. BURRIELIA. Head few-flowered, discoid, the 1 to 3 female flowers with ligule 

 wanting or shorter than the style. Involucre cylindraceous, of 3 or 4 narrowly oblong jilane 

 bracts. Recejitacle slender-subulate. Style-tips short-ovate, rather obtuse. Akenes slen- 

 der, fusiform-linear, flattish. Pappus of 2 to 4 long attenuate-subulate palese. 



141. BAERIA. Head mostly many-flowered, radiate: rays 5 to l.'j, conspicuous. Bracts 

 of the campanulate or hemispherical involucre as many, ovate or oblong, plane or becoming 

 somewhat carinate at middle, at least below. Receptacle sul)ulate to high-conical. Style- 

 tips from truncate-capitate, with or without a central apiculation, to ovate and sometimes 

 ■with a cuspidate appendage. Akenes clavate-linear to linear-cuneate. Pappus a few paleae 

 or paleaceous awns, or both, often wanting. 



* * * Bahiaty])e: receptacle flat or convex (rarely obtusely conical) : akenes from linear 

 to ol)pyraniidal, rarely 5-augled, occasionally wifli intermediate nerves : flowers (with few 

 exceptions) all fertile. 



